Articles | Volume 26, issue 6
https://doi.org/10.5194/hess-26-1527-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-26-1527-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| Highlight paper
| 
22 Mar 2022
Research article | Highlight paper |
| 22 Mar 2022
| 22 Mar 2022
Evaporation enhancement drives the European water-budget deficit during multi-year droughts
Christian Massari
CORRESPONDING AUTHOR
National Research Council (CNR), Research Institute for
Geo-Hydrological Protection, Perugia, 06126, Italy
Francesco Avanzi
CIMA Research Foundation, Via Armando Magliotto 2, 17100, Savona, Italy
Giulia Bruno
CIMA Research Foundation, Via Armando Magliotto 2, 17100, Savona, Italy
University of Genoa, Dipartimento di Informatica, Bioingegneria, Robotica e Ingegneria dei Sistemi, Viale Causa, 13 – 16145, Genova, Italy
Simone Gabellani
CIMA Research Foundation, Via Armando Magliotto 2, 17100, Savona, Italy
Daniele Penna
Department of Agriculture, Food, Environment and Forestry (DAGRI)
University of Florence, via San Bonaventura 13, 50145, Florence-Firenze, Italy
Stefania Camici
National Research Council (CNR), Research Institute for
Geo-Hydrological Protection, Perugia, 06126, Italy
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This study estimates irrigation in the Po Valley using AquaCrop and Noah-MP models with sprinkler irrigation. Noah-MP shows higher annual rates than AquaCrop due to more water losses. After adjusting, both align with reported irrigation ranges (500–600 mm/yr). Soil moisture estimates from both models match satellite data, though both have limitations in vegetation and evapotranspiration modeling. The study emphasizes the need for observations to improve irrigation estimates.
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This study provides a comparison of methodologies to quantify irrigation to enhance regional irrigation estimates. To evaluate the methodologies, we compared various approaches to quantify irrigation using soil moisture, evapotranspiration, or both within a novel baseline framework, together with irrigation estimates from other studies. We show that the synergy from using two equally important components in a joint approach within a baseline framework yields better irrigation estimates.
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Preprint under review for ESSD
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Ginevra Fabiani, Julian Klaus, and Daniele Penna
Hydrol. Earth Syst. Sci., 28, 2683–2703, https://doi.org/10.5194/hess-28-2683-2024, https://doi.org/10.5194/hess-28-2683-2024, 2024
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There is a limited understanding of the role that topography and climate play in tree water use. Through a cross-site comparison in Luxembourg and Italy, we investigated beech water use along slopes in different climates. Our findings indicate that in landscapes characterized by stronger hydraulic and climatic gradients there is greater spatial variation in tree physiological responses. This highlights how differing growing conditions across landscapes can lead to contrasting tree performances.
Søren Julsgaard Kragh, Jacopo Dari, Sara Modanesi, Christian Massari, Luca Brocca, Rasmus Fensholt, Simon Stisen, and Julian Koch
Hydrol. Earth Syst. Sci., 28, 441–457, https://doi.org/10.5194/hess-28-441-2024, https://doi.org/10.5194/hess-28-441-2024, 2024
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This study provides a comparison of methodologies to quantify irrigation to enhance regional irrigation estimates. To evaluate the methodologies, we compared various approaches to quantify irrigation using soil moisture, evapotranspiration, or both within a novel baseline framework, together with irrigation estimates from other studies. We show that the synergy from using two equally important components in a joint approach within a baseline framework yields better irrigation estimates.
Lorenzo Alfieri, Andrea Libertino, Lorenzo Campo, Francesco Dottori, Simone Gabellani, Tatiana Ghizzoni, Alessandro Masoero, Lauro Rossi, Roberto Rudari, Nicola Testa, Eva Trasforini, Ahmed Amdihun, Jully Ouma, Luca Rossi, Yves Tramblay, Huan Wu, and Marco Massabò
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This work describes Flood-PROOFS East Africa, an impact-based flood forecasting system for the Greater Horn of Africa. It is based on hydrological simulations, inundation mapping, and estimation of population and assets exposed to upcoming river floods. The system supports duty officers in African institutions in the daily monitoring of hydro-meteorological disasters. A first evaluation shows the system performance for the catastrophic floods in the Nile River basin in summer 2020.
Francesca Munerol, Francesco Avanzi, Eleonora Panizza, Marco Altamura, Simone Gabellani, Lara Polo, Marina Mantini, Barbara Alessandri, and Luca Ferraris
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We analyzed the water budget of nested karst catchments using simple methods and modeling. By utilizing the available data on precipitation and discharge, we were able to determine the response lag-time by adopting new techniques. Additionally, we modeled snow cover dynamics and evapotranspiration with the use of Earth observations, providing a concise overview of the water budget for the basin and its subbasins. We have made the data, models, and workflows accessible for further study.
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Jacopo Dari, Luca Brocca, Sara Modanesi, Christian Massari, Angelica Tarpanelli, Silvia Barbetta, Raphael Quast, Mariette Vreugdenhil, Vahid Freeman, Anaïs Barella-Ortiz, Pere Quintana-Seguí, David Bretreger, and Espen Volden
Earth Syst. Sci. Data, 15, 1555–1575, https://doi.org/10.5194/essd-15-1555-2023, https://doi.org/10.5194/essd-15-1555-2023, 2023
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Francesco Avanzi, Simone Gabellani, Fabio Delogu, Francesco Silvestro, Flavio Pignone, Giulia Bruno, Luca Pulvirenti, Giuseppe Squicciarino, Elisabetta Fiori, Lauro Rossi, Silvia Puca, Alexander Toniazzo, Pietro Giordano, Marco Falzacappa, Sara Ratto, Hervè Stevenin, Antonio Cardillo, Matteo Fioletti, Orietta Cazzuli, Edoardo Cremonese, Umberto Morra di Cella, and Luca Ferraris
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Giulia Bruno, Doris Duethmann, Francesco Avanzi, Lorenzo Alfieri, Andrea Libertino, and Simone Gabellani
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2022-416, https://doi.org/10.5194/hess-2022-416, 2022
Manuscript not accepted for further review
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Andrea Taramelli, Margherita Righini, Emiliana Valentini, Lorenzo Alfieri, Ignacio Gatti, and Simone Gabellani
Nat. Hazards Earth Syst. Sci., 22, 3543–3569, https://doi.org/10.5194/nhess-22-3543-2022, https://doi.org/10.5194/nhess-22-3543-2022, 2022
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This work aims to support decision-making processes to prioritize effective interventions for flood risk reduction and mitigation for the implementation of flood risk management concepts in urban areas. Our findings provide new insights into vulnerability spatialization of urban flood events for the residential sector, demonstrating that the nature of flood pathways varies spatially and is influenced by landscape characteristics, as well as building features.
Riccardo Rigon, Giuseppe Formetta, Marialaura Bancheri, Niccolò Tubini, Concetta D'Amato, Olaf David, and Christian Massari
Hydrol. Earth Syst. Sci., 26, 4773–4800, https://doi.org/10.5194/hess-26-4773-2022, https://doi.org/10.5194/hess-26-4773-2022, 2022
Short summary
Short summary
The
Digital Earth(DE) metaphor is very useful for both end users and hydrological modelers. We analyse different categories of models, with the view of making them part of a Digital eARth Twin Hydrology system (called DARTH). We also stress the idea that DARTHs are not models in and of themselves, rather they need to be built on an appropriate information technology infrastructure. It is remarked that DARTHs have to, by construction, support the open-science movement and its ideas.
Sara Modanesi, Christian Massari, Michel Bechtold, Hans Lievens, Angelica Tarpanelli, Luca Brocca, Luca Zappa, and Gabriëlle J. M. De Lannoy
Hydrol. Earth Syst. Sci., 26, 4685–4706, https://doi.org/10.5194/hess-26-4685-2022, https://doi.org/10.5194/hess-26-4685-2022, 2022
Short summary
Short summary
Given the crucial impact of irrigation practices on the water cycle, this study aims at estimating irrigation through the development of an innovative data assimilation system able to ingest high-resolution Sentinel-1 radar observations into the Noah-MP land surface model. The developed methodology has important implications for global water resource management and the comprehension of human impacts on the water cycle and identifies main challenges and outlooks for future research.
Stefania Camici, Gabriele Giuliani, Luca Brocca, Christian Massari, Angelica Tarpanelli, Hassan Hashemi Farahani, Nico Sneeuw, Marco Restano, and Jérôme Benveniste
Geosci. Model Dev., 15, 6935–6956, https://doi.org/10.5194/gmd-15-6935-2022, https://doi.org/10.5194/gmd-15-6935-2022, 2022
Short summary
Short summary
This paper presents an innovative approach, STREAM (SaTellite-based Runoff Evaluation And Mapping), to derive daily river discharge and runoff estimates from satellite observations of soil moisture, precipitation, and terrestrial total water storage anomalies. Potentially useful for multiple operational and scientific applications, the added value of the STREAM approach is the ability to increase knowledge on the natural processes, human activities, and their interactions on the land.
Angelica Tarpanelli, Alessandro C. Mondini, and Stefania Camici
Nat. Hazards Earth Syst. Sci., 22, 2473–2489, https://doi.org/10.5194/nhess-22-2473-2022, https://doi.org/10.5194/nhess-22-2473-2022, 2022
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We analysed 10 years of river discharge data from almost 2000 sites in Europe, and we extracted flood events, as proxies of flood inundations, based on the overpasses of Sentinel-1 and Sentinel-2 satellites to derive the percentage of potential inundation events that they were able to observe. Results show that on average 58 % of flood events are potentially observable by Sentinel-1 and only 28 % by Sentinel-2 due to the obstacle of cloud coverage.
Lorenzo Alfieri, Francesco Avanzi, Fabio Delogu, Simone Gabellani, Giulia Bruno, Lorenzo Campo, Andrea Libertino, Christian Massari, Angelica Tarpanelli, Dominik Rains, Diego G. Miralles, Raphael Quast, Mariette Vreugdenhil, Huan Wu, and Luca Brocca
Hydrol. Earth Syst. Sci., 26, 3921–3939, https://doi.org/10.5194/hess-26-3921-2022, https://doi.org/10.5194/hess-26-3921-2022, 2022
Short summary
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This work shows advances in high-resolution satellite data for hydrology. We performed hydrological simulations for the Po River basin using various satellite products, including precipitation, evaporation, soil moisture, and snow depth. Evaporation and snow depth improved a simulation based on high-quality ground observations. Interestingly, a model calibration relying on satellite data skillfully reproduces observed discharges, paving the way to satellite-driven hydrological applications.
Giulia Zuecco, Anam Amin, Jay Frentress, Michael Engel, Chiara Marchina, Tommaso Anfodillo, Marco Borga, Vinicio Carraro, Francesca Scandellari, Massimo Tagliavini, Damiano Zanotelli, Francesco Comiti, and Daniele Penna
Hydrol. Earth Syst. Sci., 26, 3673–3689, https://doi.org/10.5194/hess-26-3673-2022, https://doi.org/10.5194/hess-26-3673-2022, 2022
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We analyzed the variability in the isotopic composition of plant water extracted by two different methods, i.e., cryogenic vacuum distillation (CVD) and Scholander-type pressure chamber (SPC). Our results indicated that the isotopic composition of plant water extracted by CVD and SPC was significantly different. We concluded that plant water extraction by SPC is not an alternative for CVD as SPC mostly extracts the mobile plant water whereas CVD retrieves all water stored in the sampled tissue.
Francesco Avanzi, Simone Gabellani, Fabio Delogu, Francesco Silvestro, Edoardo Cremonese, Umberto Morra di Cella, Sara Ratto, and Hervé Stevenin
Geosci. Model Dev., 15, 4853–4879, https://doi.org/10.5194/gmd-15-4853-2022, https://doi.org/10.5194/gmd-15-4853-2022, 2022
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Knowing in real time how much snow and glacier ice has accumulated across the landscape has significant implications for water-resource management and flood control. This paper presents a computer model – S3M – allowing scientists and decision makers to predict snow and ice accumulation during winter and the subsequent melt during spring and summer. S3M has been employed for real-world flood forecasting since the early 2000s but is here being made open source for the first time.
Tessa Maurer, Francesco Avanzi, Steven D. Glaser, and Roger C. Bales
Hydrol. Earth Syst. Sci., 26, 589–607, https://doi.org/10.5194/hess-26-589-2022, https://doi.org/10.5194/hess-26-589-2022, 2022
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Predicting how much water will end up in rivers is more difficult during droughts because the relationship between precipitation and streamflow can change in unexpected ways. We differentiate between changes that are predictable based on the weather patterns and those harder to predict because they depend on the land and vegetation of a particular region. This work helps clarify why models are less accurate during droughts and helps predict how much water will be available for human use.
Sara Modanesi, Christian Massari, Alexander Gruber, Hans Lievens, Angelica Tarpanelli, Renato Morbidelli, and Gabrielle J. M. De Lannoy
Hydrol. Earth Syst. Sci., 25, 6283–6307, https://doi.org/10.5194/hess-25-6283-2021, https://doi.org/10.5194/hess-25-6283-2021, 2021
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Worldwide, the amount of water used for agricultural purposes is rising and the quantification of irrigation is becoming a crucial topic. Land surface models are not able to correctly simulate irrigation. Remote sensing observations offer an opportunity to fill this gap as they are directly affected by irrigation. We equipped a land surface model with an observation operator able to transform Sentinel-1 backscatter observations into realistic vegetation and soil states via data assimilation.
Daniele Masseroni, Stefania Camici, Alessio Cislaghi, Giorgio Vacchiano, Christian Massari, and Luca Brocca
Hydrol. Earth Syst. Sci., 25, 5589–5601, https://doi.org/10.5194/hess-25-5589-2021, https://doi.org/10.5194/hess-25-5589-2021, 2021
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We evaluate 63 years of changes in annual streamflow volume across Europe, using a data set of more than 3000 stations, with a special focus on the Mediterranean basin. The results show decreasing (increasing) volumes in the southern (northern) regions. These trends are strongly consistent with the changes in temperature and precipitation.
Francesco Avanzi, Giulia Ercolani, Simone Gabellani, Edoardo Cremonese, Paolo Pogliotti, Gianluca Filippa, Umberto Morra di Cella, Sara Ratto, Hervè Stevenin, Marco Cauduro, and Stefano Juglair
Hydrol. Earth Syst. Sci., 25, 2109–2131, https://doi.org/10.5194/hess-25-2109-2021, https://doi.org/10.5194/hess-25-2109-2021, 2021
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Precipitation tends to increase with elevation, but the magnitude and distribution of this enhancement remain poorly understood. By leveraging over 11 000 spatially distributed, manual measurements of snow depth (snow courses) upstream of two reservoirs in the western European Alps, we show that these courses bear a characteristic signature of orographic precipitation. This opens a window of opportunity for improved modeling accuracy and, ultimately, our understanding of the water budget.
Louise Mimeau, Yves Tramblay, Luca Brocca, Christian Massari, Stefania Camici, and Pascal Finaud-Guyot
Hydrol. Earth Syst. Sci., 25, 653–669, https://doi.org/10.5194/hess-25-653-2021, https://doi.org/10.5194/hess-25-653-2021, 2021
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Soil moisture is a key variable related to droughts and flood genesis, but little is known about the evolution of soil moisture under climate change. Here, using a simulation approach, we show that changes in soil moisture are driven by changes in precipitation intermittence rather than changes in precipitation intensity or in temperature.
James W. Kirchner, Sarah E. Godsey, Madeline Solomon, Randall Osterhuber, Joseph R. McConnell, and Daniele Penna
Hydrol. Earth Syst. Sci., 24, 5095–5123, https://doi.org/10.5194/hess-24-5095-2020, https://doi.org/10.5194/hess-24-5095-2020, 2020
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Streams and groundwaters often show daily cycles in response to snowmelt and evapotranspiration. These typically have a roughly 6 h time lag, which is often interpreted as a travel-time lag. Here we show that it is instead primarily a phase lag that arises because aquifers integrate their inputs over time. We further show how these cycles shift seasonally, mirroring the springtime retreat of snow cover to higher elevations and the seasonal advance and retreat of photosynthetic activity.
Stefania Camici, Christian Massari, Luca Ciabatta, Ivan Marchesini, and Luca Brocca
Hydrol. Earth Syst. Sci., 24, 4869–4885, https://doi.org/10.5194/hess-24-4869-2020, https://doi.org/10.5194/hess-24-4869-2020, 2020
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The paper performs the most comprehensive European-scale evaluation to date of satellite rainfall products for river flow prediction. In doing so, how errors transfer from satellite-based rainfall products into flood simulation is investigated in depth and, for the first time, quantitative guidelines on the use of these products for hydrological applications are provided. This result can represent a keystone in the use of satellite rainfall products, especially in data-scarce regions.
El Mahdi El Khalki, Yves Tramblay, Christian Massari, Luca Brocca, Vincent Simonneaux, Simon Gascoin, and Mohamed El Mehdi Saidi
Nat. Hazards Earth Syst. Sci., 20, 2591–2607, https://doi.org/10.5194/nhess-20-2591-2020, https://doi.org/10.5194/nhess-20-2591-2020, 2020
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In North Africa, the vulnerability to floods is high, and there is a need to improve the flood-forecasting systems. Remote-sensing and reanalysis data can palliate the lack of in situ measurements, in particular for soil moisture, which is a crucial parameter to consider when modeling floods. In this study we provide an evaluation of recent globally available soil moisture products for flood modeling in Morocco.
Francesco Avanzi, Joseph Rungee, Tessa Maurer, Roger Bales, Qin Ma, Steven Glaser, and Martha Conklin
Hydrol. Earth Syst. Sci., 24, 4317–4337, https://doi.org/10.5194/hess-24-4317-2020, https://doi.org/10.5194/hess-24-4317-2020, 2020
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Multi-year droughts in Mediterranean climates often see a lower fraction of precipitation allocated to runoff compared to non-drought years. By comparing observed water-balance components with simulations by a hydrologic model (PRMS), we reinterpret these shifts as a hysteretic response of the water budget to climate elasticity of evapotranspiration. Our results point to a general improvement in hydrologic predictions across drought and recovery cycles by including this mechanism.
Silvia Terzago, Valentina Andreoli, Gabriele Arduini, Gianpaolo Balsamo, Lorenzo Campo, Claudio Cassardo, Edoardo Cremonese, Daniele Dolia, Simone Gabellani, Jost von Hardenberg, Umberto Morra di Cella, Elisa Palazzi, Gaia Piazzi, Paolo Pogliotti, and Antonello Provenzale
Hydrol. Earth Syst. Sci., 24, 4061–4090, https://doi.org/10.5194/hess-24-4061-2020, https://doi.org/10.5194/hess-24-4061-2020, 2020
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In mountain areas high-quality meteorological data to drive snow models are rarely available, so coarse-resolution data from spatial interpolation of the available in situ measurements or reanalyses are typically employed. We perform 12 experiments using six snow models with different degrees of complexity to show the impact of the accuracy of the forcing on snow depth and snow water equivalent simulations at the Alpine site of Torgnon, discussing the results in relation to the model complexity.
Christian Massari, Luca Brocca, Thierry Pellarin, Gab Abramowitz, Paolo Filippucci, Luca Ciabatta, Viviana Maggioni, Yann Kerr, and Diego Fernandez Prieto
Hydrol. Earth Syst. Sci., 24, 2687–2710, https://doi.org/10.5194/hess-24-2687-2020, https://doi.org/10.5194/hess-24-2687-2020, 2020
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Rain gauges are unevenly spaced around the world with extremely low gauge density over places like Africa and South America. Here, water-related problems like floods, drought and famine are particularly severe and able to cause fatalities, migration and diseases. We have developed a rainfall dataset that exploits the synergies between rainfall and soil moisture to provide accurate rainfall observations which can be used to face these problems.
Luca Brocca, Paolo Filippucci, Sebastian Hahn, Luca Ciabatta, Christian Massari, Stefania Camici, Lothar Schüller, Bojan Bojkov, and Wolfgang Wagner
Earth Syst. Sci. Data, 11, 1583–1601, https://doi.org/10.5194/essd-11-1583-2019, https://doi.org/10.5194/essd-11-1583-2019, 2019
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SM2RAIN–ASCAT is a new 12-year (2007–2018) global-scale rainfall dataset obtained by applying the SM2RAIN algorithm to ASCAT soil moisture data. The dataset has a spatiotemporal sampling resolution of 12.5 km and 1 d. Results show that the new dataset performs particularly well in Africa and South America, i.e. in the continents in which ground observations are scarce and the need for satellite rainfall data is high. SM2RAIN–ASCAT is available at http://doi.org/10.5281/zenodo.340556.
Michael Engel, Daniele Penna, Giacomo Bertoldi, Gianluca Vignoli, Werner Tirler, and Francesco Comiti
Hydrol. Earth Syst. Sci., 23, 2041–2063, https://doi.org/10.5194/hess-23-2041-2019, https://doi.org/10.5194/hess-23-2041-2019, 2019
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Hydrometric and geochemical dynamics are controlled by interplay of meteorological conditions, topography and geological heterogeneity. Nivo-meteorological indicators (such as global solar radiation, temperature and decreasing snow depth) explain monthly conductivity and isotopic dynamics best. These insights are important for better understanding hydrochemical responses of glacierized catchments under a changing cryosphere.
Daniele Penna, Luisa Hopp, Francesca Scandellari, Scott T. Allen, Paolo Benettin, Matthias Beyer, Josie Geris, Julian Klaus, John D. Marshall, Luitgard Schwendenmann, Till H. M. Volkmann, Jana von Freyberg, Anam Amin, Natalie Ceperley, Michael Engel, Jay Frentress, Yamuna Giambastiani, Jeff J. McDonnell, Giulia Zuecco, Pilar Llorens, Rolf T. W. Siegwolf, Todd E. Dawson, and James W. Kirchner
Biogeosciences, 15, 6399–6415, https://doi.org/10.5194/bg-15-6399-2018, https://doi.org/10.5194/bg-15-6399-2018, 2018
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Understanding how water flows through ecosystems is needed to provide society and policymakers with the scientific background to manage water resources sustainably. Stable isotopes of hydrogen and oxygen in water are a powerful tool for tracking water fluxes, although the heterogeneity of natural systems and practical methodological issues still limit their full application. Here, we examine the challenges in this research field and highlight new perspectives based on interdisciplinary research.
Gaia Piazzi, Guillaume Thirel, Lorenzo Campo, and Simone Gabellani
The Cryosphere, 12, 2287–2306, https://doi.org/10.5194/tc-12-2287-2018, https://doi.org/10.5194/tc-12-2287-2018, 2018
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The study focuses on the development of a multivariate particle filtering data assimilation scheme into a point-scale snow model. One of the main challenging issues concerns the impoverishment of the particle sample, which is addressed by jointly perturbing meteorological data and model parameters. An additional snow density model is introduced to reduce sensitivity to the availability of snow mass-related observations. In this configuration, the system reveals a satisfying performance.
Paolo Benettin, Till H. M. Volkmann, Jana von Freyberg, Jay Frentress, Daniele Penna, Todd E. Dawson, and James W. Kirchner
Hydrol. Earth Syst. Sci., 22, 2881–2890, https://doi.org/10.5194/hess-22-2881-2018, https://doi.org/10.5194/hess-22-2881-2018, 2018
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Evaporation causes the isotopic composition of soil water to become different from that of the original precipitation source. If multiple samples originating from the same source are available, they can be used to reconstruct the original source composition. However, soil water is influenced by seasonal variability in both precipitation sources and evaporation patterns. We show that this variability, if not accounted for, can lead to biased estimates of the precipitation source water.
Luca Ciabatta, Christian Massari, Luca Brocca, Alexander Gruber, Christoph Reimer, Sebastian Hahn, Christoph Paulik, Wouter Dorigo, Richard Kidd, and Wolfgang Wagner
Earth Syst. Sci. Data, 10, 267–280, https://doi.org/10.5194/essd-10-267-2018, https://doi.org/10.5194/essd-10-267-2018, 2018
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In this study, rainfall is estimated starting from satellite soil moisture observation on a global scale, using the ESA CCI soil moisture datasets. The new obtained rainfall product has proven to correctly identify rainfall events, showing performance sometimes higher than those obtained by using classical rainfall estimation approaches.
Hiroyuki Hirashima, Francesco Avanzi, and Satoru Yamaguchi
Hydrol. Earth Syst. Sci., 21, 5503–5515, https://doi.org/10.5194/hess-21-5503-2017, https://doi.org/10.5194/hess-21-5503-2017, 2017
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We reproduced the formation of capillary barriers and the development of preferential flow through snow using a multi-dimensional water transport model, which was then validated using laboratory experiments of liquid water infiltration into layered, initially dry snow. Simulation results showed that the model reconstructs some relevant features of capillary barriers and the timing of liquid water arrival at the snow base.
Luca Cenci, Luca Pulvirenti, Giorgio Boni, Marco Chini, Patrick Matgen, Simone Gabellani, Giuseppe Squicciarino, and Nazzareno Pierdicca
Adv. Geosci., 44, 89–100, https://doi.org/10.5194/adgeo-44-89-2017, https://doi.org/10.5194/adgeo-44-89-2017, 2017
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This research aims at improving hydrological modelling skills of flash flood prediction by exploiting earth observation data. To this aim, high spatial/moderate temporal resolution soil moisture maps, derived from Sentinel 1 acquisitions, were used in a data assimilation framework. Findings revealed the potential of Sentinel 1-based soil moisture data assimilation for flash flood risk reduction and improved our understanding of the capabilities of the aforementioned satellite-derived product.
Christian Massari, Wade Crow, and Luca Brocca
Hydrol. Earth Syst. Sci., 21, 4347–4361, https://doi.org/10.5194/hess-21-4347-2017, https://doi.org/10.5194/hess-21-4347-2017, 2017
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The paper explores a method for the assessment of the performance of global rainfall estimates without relying on ground-based observations. Thanks to this method, different global correlation maps are obtained (for the first time without relying on a benchmark dataset) for some of the most used globally available rainfall products. This is central for hydroclimatic studies within data-scarce regions, where ground observations are scarce to evaluate the relative quality of a rainfall product
Francesco Avanzi, Alberto Bianchi, Alberto Cina, Carlo De Michele, Paolo Maschio, Diana Pagliari, Daniele Passoni, Livio Pinto, Marco Piras, and Lorenzo Rossi
The Cryosphere Discuss., https://doi.org/10.5194/tc-2017-57, https://doi.org/10.5194/tc-2017-57, 2017
Revised manuscript not accepted
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We compare three different instruments used to collect snow depth, i.e., photogrammetric surveys using Unmanned Aerial Systems (UAS), a 3D laser scanning, and manual probing. The relatively high density of manual data (135 pt over 6700 m2, i.e., 2 pt/100 m2) enables to assess the performance of UAS in capturing the marked spatial variability of snow. Results suggest that UAS represent a competitive choice among existing techniques for high-precision, high-resolution remote sensing of snow.
Daniele Penna, Michael Engel, Giacomo Bertoldi, and Francesco Comiti
Hydrol. Earth Syst. Sci., 21, 23–41, https://doi.org/10.5194/hess-21-23-2017, https://doi.org/10.5194/hess-21-23-2017, 2017
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In this research we used environmental tracers in the Saldur River catchment, Italian Alps to obtain new insight into the hydrology of glacierized catchments. We analysed the spatio-temporal variability of the tracer signature within the catchment, distinguished the contribution of groundwater, glacier melt and snowmelt to stream discharge, identified the sources of uncertainty in the estimation of streamflow components and presented a paradigm of hydrological function of glacierized catchments.
Francesco Avanzi, Hiroyuki Hirashima, Satoru Yamaguchi, Takafumi Katsushima, and Carlo De Michele
The Cryosphere, 10, 2013–2026, https://doi.org/10.5194/tc-10-2013-2016, https://doi.org/10.5194/tc-10-2013-2016, 2016
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We investigate capillary barriers and preferential flow in layered snow during nine cold laboratory experiments. The dynamics of each sample were replicated solving Richards equation within the 1-D multi-layer physically based SNOWPACK model. Results show that both processes affect the speed of water infiltration in stratified snow and are marked by a high degree of spatial variability at cm scale and complex 3-D patterns.
Francesco Silvestro, Nicola Rebora, Lauro Rossi, Daniele Dolia, Simone Gabellani, Flavio Pignone, Eva Trasforini, Roberto Rudari, Silvia De Angeli, and Cristiano Masciulli
Nat. Hazards Earth Syst. Sci., 16, 1737–1753, https://doi.org/10.5194/nhess-16-1737-2016, https://doi.org/10.5194/nhess-16-1737-2016, 2016
Carlo De Michele, Francesco Avanzi, Daniele Passoni, Riccardo Barzaghi, Livio Pinto, Paolo Dosso, Antonio Ghezzi, Roberto Gianatti, and Giacomo Della Vedova
The Cryosphere, 10, 511–522, https://doi.org/10.5194/tc-10-511-2016, https://doi.org/10.5194/tc-10-511-2016, 2016
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We investigate snow depth distribution at peak accumulation over a small Alpine area using photogrammetry-based surveys with a fixed wing unmanned aerial system. Results reveal that UAS estimations of point snow depth present an average difference with reference to manual measurements equal to -0.073 m. Moreover, in this case study snow depth standard deviation (hence coefficient of variation) increases with decreasing cell size, but it stabilizes for resolutions smaller than 1 m.
F. Silvestro, S. Gabellani, R. Rudari, F. Delogu, P. Laiolo, and G. Boni
Hydrol. Earth Syst. Sci., 19, 1727–1751, https://doi.org/10.5194/hess-19-1727-2015, https://doi.org/10.5194/hess-19-1727-2015, 2015
D. Penna, M. Engel, L. Mao, A. Dell'Agnese, G. Bertoldi, and F. Comiti
Hydrol. Earth Syst. Sci., 18, 5271–5288, https://doi.org/10.5194/hess-18-5271-2014, https://doi.org/10.5194/hess-18-5271-2014, 2014
D. Penna, M. Borga, G. T. Aronica, G. Brigandì, and P. Tarolli
Hydrol. Earth Syst. Sci., 18, 2127–2139, https://doi.org/10.5194/hess-18-2127-2014, https://doi.org/10.5194/hess-18-2127-2014, 2014
C. Massari, L. Brocca, S. Barbetta, C. Papathanasiou, M. Mimikou, and T. Moramarco
Hydrol. Earth Syst. Sci., 18, 839–853, https://doi.org/10.5194/hess-18-839-2014, https://doi.org/10.5194/hess-18-839-2014, 2014
F. Silvestro, S. Gabellani, F. Delogu, R. Rudari, and G. Boni
Hydrol. Earth Syst. Sci., 17, 39–62, https://doi.org/10.5194/hess-17-39-2013, https://doi.org/10.5194/hess-17-39-2013, 2013
Related subject area
Subject: Global hydrology | Techniques and Approaches: Instruments and observation techniques
Wetting and drying trends in the land–atmosphere reservoir of large basins around the world
HESS Opinions: Towards a common vision for the future of hydrological observatories
Evaluation of reanalysis soil moisture products using cosmic ray neutron sensor observations across the globe
Combining passive and active distributed temperature sensing measurements to locate and quantify groundwater discharge variability into a headwater stream
Technical note: Evaluation and bias correction of an observation-based global runoff dataset using streamflow observations from small tropical catchments in the Philippines
Hydrology and water resources management in ancient India
Terrestrial water loss at night: global relevance from observations and climate models
Global-scale evaluation of 22 precipitation datasets using gauge observations and hydrological modeling
SMOS brightness temperature assimilation into the Community Land Model
SMOS near-real-time soil moisture product: processor overview and first validation results
Estimating annual water storage variations in medium-scale (2000–10 000 km2) basins using microwave-based soil moisture retrievals
Recent trends and variability in river discharge across northern Canada
Effects of changes in moisture source and the upstream rainout on stable isotopes in precipitation – a case study in Nanjing, eastern China
The "Prediflood" database of historical floods in Catalonia (NE Iberian Peninsula) AD 1035–2013, and its potential applications in flood analysis
Regional GRACE-based estimates of water mass variations over Australia: validation and interpretation
Geodynamical processes in the channel connecting the two lobes of the Large Aral Sea
Juan F. Salazar, Ruben D. Molina, Jorge I. Zuluaga, and Jesus D. Gomez-Velez
Hydrol. Earth Syst. Sci., 28, 2919–2947, https://doi.org/10.5194/hess-28-2919-2024, https://doi.org/10.5194/hess-28-2919-2024, 2024
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Global change is altering river basins and their discharge worldwide. We introduce the land–atmosphere reservoir (LAR) concept to investigate these changes in six of the world's largest basins. We found that low-latitude basins (Amazon, Paraná, and Congo) are getting wetter, whereas high-latitude basins (Mississippi, Ob, and Yenisei) are drying. If this continues, these long-term trends will disrupt the discharge regime and compromise the sustainability of these basins with widespread impacts.
Paolo Nasta, Günter Blöschl, Heye R. Bogena, Steffen Zacharias, Roland Baatz, Gabriëlle De Lannoy, Karsten H. Jensen, Salvatore Manfreda, Laurent Pfister, Ana M. Tarquis, Ilja van Meerveld, Marc Voltz, Yijian Zeng, William Kustas, Xin Li, Harry Vereecken, and Nunzio Romano
EGUsphere, https://doi.org/10.5194/egusphere-2024-1678, https://doi.org/10.5194/egusphere-2024-1678, 2024
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The Unsolved Problems in Hydrology (UPH) initiative has emphasized the need to establish networks of multi-decadal hydrological observatories to tackle catchment-scale challenges on a global scale. This opinion paper provocatively discusses two end members of possible future hydrological observatory (HO) networks for a given hypothesized community budget: a comprehensive set of moderately instrumented observatories or, alternatively, a small number of highly instrumented super-sites.
Yanchen Zheng, Gemma Coxon, Ross Woods, Daniel Power, Miguel Angel Rico-Ramirez, David McJannet, Rafael Rosolem, Jianzhu Li, and Ping Feng
Hydrol. Earth Syst. Sci., 28, 1999–2022, https://doi.org/10.5194/hess-28-1999-2024, https://doi.org/10.5194/hess-28-1999-2024, 2024
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Reanalysis soil moisture products are a vital basis for hydrological and environmental research. Previous product evaluation is limited by the scale difference (point and grid scale). This paper adopts cosmic ray neutron sensor observations, a novel technique that provides root-zone soil moisture at field scale. In this paper, global harmonized CRNS observations were used to assess products. ERA5-Land, SMAPL4, CFSv2, CRA40 and GLEAM show better performance than MERRA2, GLDAS-Noah and JRA55.
Nataline Simon, Olivier Bour, Mikaël Faucheux, Nicolas Lavenant, Hugo Le Lay, Ophélie Fovet, Zahra Thomas, and Laurent Longuevergne
Hydrol. Earth Syst. Sci., 26, 1459–1479, https://doi.org/10.5194/hess-26-1459-2022, https://doi.org/10.5194/hess-26-1459-2022, 2022
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Groundwater discharge into streams plays a major role in the preservation of stream ecosystems. There were two complementary methods, both based on the use of the distributed temperature sensing technology, applied in a headwater catchment. Measurements allowed us to characterize the spatial and temporal patterns of groundwater discharge and quantify groundwater inflows into the stream, opening very promising perspectives for a novel characterization of the groundwater–stream interface.
Daniel E. Ibarra, Carlos Primo C. David, and Pamela Louise M. Tolentino
Hydrol. Earth Syst. Sci., 25, 2805–2820, https://doi.org/10.5194/hess-25-2805-2021, https://doi.org/10.5194/hess-25-2805-2021, 2021
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We evaluate a recently published global product of monthly runoff using streamflow data from small tropical catchments in the Philippines. Using monthly runoff observations from catchments, we tested for correlation and prediction. We demonstrate the potential utility of this product in assessing trends in regional-scale runoff, as well as look at the correlation of phenomenon such as the El Niño–Southern Oscillation on streamflow in this wet but drought-prone archipelago.
Pushpendra Kumar Singh, Pankaj Dey, Sharad Kumar Jain, and Pradeep P. Mujumdar
Hydrol. Earth Syst. Sci., 24, 4691–4707, https://doi.org/10.5194/hess-24-4691-2020, https://doi.org/10.5194/hess-24-4691-2020, 2020
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Like in all ancient civilisations, the need to manage water propelled the growth of hydrological science in ancient India also. In this paper, we provide some fascinating glimpses into the hydrological, hydraulic, and related engineering knowledge that existed in ancient India, as discussed in contemporary literature and recent explorations and findings. Many interesting dimensions of early scientific endeavours emerge as we investigate deeper into ancient texts, including Indian mythology.
Ryan S. Padrón, Lukas Gudmundsson, Dominik Michel, and Sonia I. Seneviratne
Hydrol. Earth Syst. Sci., 24, 793–807, https://doi.org/10.5194/hess-24-793-2020, https://doi.org/10.5194/hess-24-793-2020, 2020
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We focus on the net exchange of water between land and air via evapotranspiration and dew during the night. We provide, for the first time, an overview of the magnitude and variability of this flux across the globe from observations and climate models. Nocturnal water loss from land is 7 % of total evapotranspiration on average and can be greater than 15 % locally. Our results highlight the relevance of this often overlooked flux, with implications for water resources and climate studies.
Hylke E. Beck, Noemi Vergopolan, Ming Pan, Vincenzo Levizzani, Albert I. J. M. van Dijk, Graham P. Weedon, Luca Brocca, Florian Pappenberger, George J. Huffman, and Eric F. Wood
Hydrol. Earth Syst. Sci., 21, 6201–6217, https://doi.org/10.5194/hess-21-6201-2017, https://doi.org/10.5194/hess-21-6201-2017, 2017
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This study represents the most comprehensive global-scale precipitation dataset evaluation to date. We evaluated 13 uncorrected precipitation datasets using precipitation observations from 76 086 gauges, and 9 gauge-corrected ones using hydrological modeling for 9053 catchments. Our results highlight large differences in estimation accuracy, and hence, the importance of precipitation dataset selection in both research and operational applications.
Dominik Rains, Xujun Han, Hans Lievens, Carsten Montzka, and Niko E. C. Verhoest
Hydrol. Earth Syst. Sci., 21, 5929–5951, https://doi.org/10.5194/hess-21-5929-2017, https://doi.org/10.5194/hess-21-5929-2017, 2017
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We have assimilated 6 years of satellite-observed passive microwave data into a state-of-the-art land surface model to improve surface soil moisture as well as root-zone soil moisture simulations. Long-term assimilation effects/biases are identified, and they are especially dependent on model perturbations, applied to simulate model uncertainty. The implications are put into context of using such assimilation-improved data for classifying extremes within hydrological monitoring systems.
Nemesio J. Rodríguez-Fernández, Joaquin Muñoz Sabater, Philippe Richaume, Patricia de Rosnay, Yann H. Kerr, Clement Albergel, Matthias Drusch, and Susanne Mecklenburg
Hydrol. Earth Syst. Sci., 21, 5201–5216, https://doi.org/10.5194/hess-21-5201-2017, https://doi.org/10.5194/hess-21-5201-2017, 2017
Short summary
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The new SMOS satellite near-real-time (NRT) soil moisture (SM) product based on a neural network is presented. The NRT SM product has been evaluated with respect to the SMOS Level 2 product and against a large number of in situ measurements showing performances similar to those of the Level 2 product but it is available in less than 3.5 h after sensing. The new product is distributed by the European Space Agency and the European Organisation for the Exploitation of Meteorological Satellites.
Wade T. Crow, Eunjin Han, Dongryeol Ryu, Christopher R. Hain, and Martha C. Anderson
Hydrol. Earth Syst. Sci., 21, 1849–1862, https://doi.org/10.5194/hess-21-1849-2017, https://doi.org/10.5194/hess-21-1849-2017, 2017
Short summary
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Terrestrial water storage is defined as the total volume of water stored within the land surface and sub-surface and is a key variable for tracking long-term variability in the global water cycle. Currently, annual variations in terrestrial water storage can only be measured at extremely coarse spatial resolutions (> 200 000 km2) using gravity-based remote sensing. Here we provide evidence that microwave-based remote sensing of soil moisture can be applied to enhance this resolution.
Stephen J. Déry, Tricia A. Stadnyk, Matthew K. MacDonald, and Bunu Gauli-Sharma
Hydrol. Earth Syst. Sci., 20, 4801–4818, https://doi.org/10.5194/hess-20-4801-2016, https://doi.org/10.5194/hess-20-4801-2016, 2016
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This manuscript focuses on observed changes to the hydrology of 42 rivers in northern Canada draining one-half of its land mass over the period 1964–2013. Statistical and trend analyses are presented for the 42 individual rivers, 6 regional drainage basins, and collectively for all of northern Canada. A main finding is the reversal of a statistically significant decline in the first half of the study period to a statistically significant 18.1 % incline in river discharge across northern Canada.
Y. Tang, H. Pang, W. Zhang, Y. Li, S. Wu, and S. Hou
Hydrol. Earth Syst. Sci., 19, 4293–4306, https://doi.org/10.5194/hess-19-4293-2015, https://doi.org/10.5194/hess-19-4293-2015, 2015
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We examined the variability of daily stable isotopic composition in precipitation in Nanjing, eastern China. We found that both the upstream rainout effect on stable isotopes related to changes in the Asian summer monsoon and the temperature effect of precipitation stable isotopes associated with the Asian winter monsoon should be taken into account when interpreting the stable isotopic composition of speleothems in the Asian monsoon region.
M. Barriendos, J. L. Ruiz-Bellet, J. Tuset, J. Mazón, J. C. Balasch, D. Pino, and J. L. Ayala
Hydrol. Earth Syst. Sci., 18, 4807–4823, https://doi.org/10.5194/hess-18-4807-2014, https://doi.org/10.5194/hess-18-4807-2014, 2014
Short summary
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This paper shows an interdisciplinary effort for a common methodology on flood risk analysis: hydraullics, hydrology, climatology and meteorology. Most basic problems of work with historical information are faced. Firsts results of data collection on historical floods for Catalonia (Ne Spain) are showed for period AD 1035-2014.
L. Seoane, G. Ramillien, F. Frappart, and M. Leblanc
Hydrol. Earth Syst. Sci., 17, 4925–4939, https://doi.org/10.5194/hess-17-4925-2013, https://doi.org/10.5194/hess-17-4925-2013, 2013
E. Roget, P. Zavialov, V. Khan, and M. A. Muñiz
Hydrol. Earth Syst. Sci., 13, 2265–2271, https://doi.org/10.5194/hess-13-2265-2009, https://doi.org/10.5194/hess-13-2265-2009, 2009
Cited articles
Addy, K., Gold, A. J., Welsh, M. K., August, P. V., Stolt, M. H., Arango, C.
P., and Groffman, P. M.: Connectivity and Nitrate Uptake Potential of
Intermittent Streams in the Northeast USA, Front. Ecol. Evol., 7, 225,
https://doi.org/10.3389/fevo.2019.00225, 2019.
Alvarez-Garreton, C., Boisier, J. P., Garreaud, R., Seibert, J., and Vis, M.: Progressive water deficits during multiyear droughts in basins with long hydrological memory in Chile, Hydrol. Earth Syst. Sci., 25, 429–446, https://doi.org/10.5194/hess-25-429-2021, 2021.
Amin, A., Zuecco, G., Geris, J., Schwendenmann, L., McDonnell, J. J., Borga,
M., and Penna, D.: Depth distribution of soil water sourced by plants at the
global scale: A new direct inference approach, Ecohydrology, 13, e2177,
https://doi.org/10.1002/eco.2177, 2020.
Armstrong, A., Stedman, R. C., Bishop, J. A., and Sullivan, P. J.: What's a
Stream Without Water? Disproportionality in Headwater Regions Impacting
Water Quality, Environ. Manage., 50, 849–860,
https://doi.org/10.1007/s00267-012-9928-0, 2012.
Avanzi, F., Rungee, J., Maurer, T., Bales, R., Ma, Q., Glaser, S., and Conklin, M.: Climate elasticity of evapotranspiration shifts the water balance of Mediterranean climates during multi-year droughts, Hydrol. Earth Syst. Sci., 24, 4317–4337, https://doi.org/10.5194/hess-24-4317-2020, 2020.
Bales, R. C., Goulden, M. L., Hunsaker, C. T., Conklin, M. H., Hartsough, P.
C., O'Geen, A. T., Hopmans, J. W., and Safeeq, M.: Mechanisms controlling
the impact of multi-year drought on mountain hydrology, Sci. Rep., 8, 690,
https://doi.org/10.1038/s41598-017-19007-0, 2018.
Barbeta, A. and Peñuelas, J.: Relative contribution of groundwater to
plant transpiration estimated with stable isotopes, Sci. Rep., 7, 10580,
https://doi.org/10.1038/s41598-017-09643-x, 2017.
Berghuijs, W. R., Woods, R. A., and Hrachowitz, M.: A precipitation shift
from snow towards rain leads to a decrease in streamflow, Nat. Clim. Change,
4, 583–586, https://doi.org/10.1038/nclimate2246, 2014.
Beven, K. and Freer, J.: Equifinality, data assimilation, and uncertainty
estimation in mechanistic modelling of complex environmental systems using
the GLUE methodology, J. Hydrol., 249, 11–29,
https://doi.org/10.1016/S0022-1694(01)00421-8, 2001.
Biederman, J. A., Harpold, A. A., Gochis, D. J., Ewers, B. E., Reed, D. E.,
Papuga, S. A., and Brooks, P. D.: Increased evaporation following widespread
tree mortality limits streamflow response, Water Resour. Res., 50,
5395–5409, https://doi.org/10.1002/2013WR014994, 2014.
Bowd, E. J., Banks, S. C., Strong, C. L., and Lindenmayer, D. B.: Long-term
impacts of wildfire and logging on forest soils, Nat. Geosci., 12, 113–118,
https://doi.org/10.1038/s41561-018-0294-2, 2019.
Box, G. E. P. and Cox, D. R.: An Analysis of Transformations, J. R. Stat.
Soc. Ser. B Methodol., 26, 211–243,
https://doi.org/10.1111/j.2517-6161.1964.tb00553.x, 1964.
Budyko, M. I. and Miller, D. H.: Climate and Life, vol. 18, 1st edn.,
New York Academic Press, 507 pp., edited by: Budyko, ISBN 9780080954530, 1974.
Carrière, S. D., Martin-StPaul, N. K., Cakpo, C. B., Patris, N., Gillon,
M., Chalikakis, K., Doussan, C., Olioso, A., Babic, M., Jouineau, A.,
Simioni, G., and Davi, H.: The role of deep vadose zone water in tree
transpiration during drought periods in karst settings – Insights from
isotopic tracing and leaf water potential, Sci. Total Environ., 699, 134332,
https://doi.org/10.1016/j.scitotenv.2019.134332, 2020.
Choat, B., Brodribb, T. J., Brodersen, C. R., Duursma, R. A., López, R.,
and Medlyn, B. E.: Triggers of tree mortality under drought, Nature, 558,
531–539, https://doi.org/10.1038/s41586-018-0240-x, 2018.
Copernicus Climate Change Service (C3S): ERA5 data, https://doi.org/10.24381/cds.adbb2d47, 2022.
Cornes, R., van der Schrier, G., van den Besselaar, E. J. M., and Jones, P. D.: An Ensemble Version of the E-OBS Temperature and Precipitation Datasets, J. Geophys. Res.-Atmos., 123, https://doi.org/10.1029/2017JD028200, 2018.
Crochemore, L., Isberg, K., Pimentel, R., Pineda, L., Hasan, A., and
Arheimer, B.: Lessons learnt from checking the quality of openly accessible
river flow data worldwide, Hydrol. Sci. J., 65, 699–711,
https://doi.org/10.1080/02626667.2019.1659509, 2020.
Datry, T., Fritz, K., and Leigh, C.: Challenges, developments and
perspectives in intermittent river ecology, Freshw. Biol., 61, 1171–1180,
https://doi.org/10.1111/fwb.12789, 2016.
De Kauwe, M. G., Zhou, S.-X., Medlyn, B. E., Pitman, A. J., Wang, Y.-P., Duursma, R. A., and Prentice, I. C.: Do land surface models need to include differential plant species responses to drought? Examining model predictions across a mesic-xeric gradient in Europe, Biogeosciences, 12, 7503–7518, https://doi.org/10.5194/bg-12-7503-2015, 2015.
Dijk, A. I. J. M. van, Beck, H. E., Crosbie, R. S., Jeu, R. A. M. de, Liu,
Y. Y., Podger, G. M., Timbal, B., and Viney, N. R.: The Millennium Drought
in southeast Australia (2001–2009): Natural and human causes and
implications for water resources, ecosystems, economy, and society, Water
Resour. Res., 49, 1040–1057, https://doi.org/10.1002/wrcr.20123, 2013.
Domec, J.-C. and Johnson, D. M.: Does homeostasis or disturbance of
homeostasis in minimum leaf water potential explain the isohydric versus
anisohydric behavior of Vitis vinifera L. cultivars?, Tree Physiol., 32,
245–248, https://doi.org/10.1093/treephys/tps013, 2012.
Domínguez-Castro, F., Vicente-Serrano, S. M., Tomás-Burguera, M.,
Peña-Gallardo, M., Beguería, S., El Kenawy, A., Luna, Y., and
Morata, A.: High spatial resolution climatology of drought events for Spain:
1961–2014, Int. J. Climatol., 39, 5046–5062,
https://doi.org/10.1002/joc.6126, 2019.
Dong, J., Dirmeyer, P. A., Lei, F., Anderson, M. C., Holmes, T. R. H., Hain,
C., and Crow, W. T.: Soil Evaporation Stress Determines Soil
Moisture-Evapotranspiration Coupling Strength in Land Surface Modeling,
Geophys. Res. Lett., 47, e2020GL090391,
https://doi.org/10.1029/2020GL090391, 2020.
ECA&D: E-OBS, https://www.ecad.eu/download/ensembles/download.php#datafiles, last access: 8 March 2022.
Fan, Y., Miguez-Macho, G., Jobbágy, E. G., Jackson, R. B., and
Otero-Casal, C.: Hydrologic regulation of plant rooting depth, P. Natl.
Acad. Sci. USA, 114, 10572–10577, https://doi.org/10.1073/pnas.1712381114,
2017.
Feng, X., Thompson, S. E., Woods, R., and Porporato, A.: Quantifying
Asynchronicity of Precipitation and Potential Evapotranspiration in
Mediterranean Climates, Geophys. Res. Lett., 46, 14692–14701,
https://doi.org/10.1029/2019GL085653, 2019.
Fink, A. H., Brücher, T., Krüger, A., Leckebusch, G. C., Pinto, J.
G., and Ulbrich, U.: The 2003 European summer heatwaves and drought
– synoptic diagnosis and impacts, Weather, 59, 209–216,
https://doi.org/10.1256/wea.73.04, 2004.
Fovet, O., Belemtougri, A., Boithias, L., Braud, I., Charlier, J.-B.,
Cottet, M., Daudin, K., Dramais, G., Ducharne, A., Folton, N., Grippa, M.,
Hector, B., Kuppel, S., Le Coz, J., Legal, L., Martin, P., Moatar, F.,
Molénat, J., Probst, A., Riotte, J., Vidal, J.-P., Vinatier, F., and
Datry, T.: Intermittent rivers and ephemeral streams: Perspectives for
critical zone science and research on socio-ecosystems, WIREs Water, 8,
e1523, https://doi.org/10.1002/wat2.1523, 2021.
Fowler, K., Knoben, W., Peel, M., Peterson, T., Ryu, D., Saft, M., Seo, K.,
and Western, A.: Many commonly used rainfall-runoff models lack long, slow
dynamics: implications for runoff projections, Water Resour. Res., 56, e2019WR025286, https://doi.org/10.1029/2019WR025286, 2020.
Fowler, K. J. A., Peel, M. C., Western, A. W., Zhang, L., and Peterson, T.
J.: Simulating runoff under changing climatic conditions: Revisiting an
apparent deficiency of conceptual rainfall-runoff models, Water Resour.
Res., 52, 1820–1846, https://doi.org/10.1002/2015WR018068, 2016.
García-Ruiz, J. M., López-Moreno, J. I., Vicente-Serrano, S. M.,
Lasanta–Martínez, T., and Beguería, S.: Mediterranean water
resources in a global change scenario, Earth-Sci. Rev., 105, 121–139,
https://doi.org/10.1016/j.earscirev.2011.01.006, 2011.
Garreaud, R. D., Alvarez-Garreton, C., Barichivich, J., Boisier, J. P., Christie, D., Galleguillos, M., LeQuesne, C., McPhee, J., and Zambrano-Bigiarini, M.: The 2010–2015 megadrought in central Chile: impacts on regional hydroclimate and vegetation, Hydrol. Earth Syst. Sci., 21, 6307–6327, https://doi.org/10.5194/hess-21-6307-2017, 2017.
Gentilesca, T., Camarero, J. J., Colangelo, M., Nolè, A., and Ripullone,
F.: Drought-induced oak decline in the western Mediterranean region: an
overview on current evidences, mechanisms and management options to improve
forest resilience, IForest – Biogeosciences For., 10, 796,
https://doi.org/10.3832/ifor2317-010, 2017.
Goulden, M. L. and Bales, R. C.: California forest die-off linked to
multi-year deep soil drying in 2012–2015 drought, Nat. Geosci., 12,
632–637, https://doi.org/10.1038/s41561-019-0388-5, 2019.
Gouveia, C. M., Trigo, R. M., Beguería, S., and Vicente-Serrano, S. M.:
Drought impacts on vegetation activity in the Mediterranean region: An
assessment using remote sensing data and multi-scale drought indicators,
Glob. Planet. Change, 151, 15–27,
https://doi.org/10.1016/j.gloplacha.2016.06.011, 2017.
GRDC (Global Runoff Data Center): Discharge observations and shapefiles, https://www.bafg.de/GRDC/EN/01_GRDC/grdc_node.html (last access: 17 March 2022), 2022.
Griffin, D. and Anchukaitis, K. J.: How unusual is the 2012–2014 California
drought?, Geophys. Res. Lett., 41, 9017–9023,
https://doi.org/10.1002/2014GL062433, 2014.
Hahm, W. J., Dralle, D. N., Rempe, D. M., Bryk, A. B., Thompson, S. E.,
Dawson, T. E., and Dietrich, W. E.: Low Subsurface Water Storage Capacity
Relative to Annual Rainfall Decouples Mediterranean Plant Productivity and
Water Use From Rainfall Variability, Geophys. Res. Lett., 46, 6544–6553,
https://doi.org/10.1029/2019GL083294, 2019.
Haile, G. G., Tang, Q., Hosseini-Moghari, S.-M., Liu, X., Gebremicael, T.
G., Leng, G., Kebede, A., Xu, X., and Yun, X.: Projected Impacts of Climate
Change on Drought Patterns Over East Africa, Earths Future, 8,
e2020EF001502, https://doi.org/10.1029/2020EF001502, 2020.
Hanel, M., Rakovec, O., Markonis, Y., Máca, P., Samaniego, L.,
Kyselý, J., and Kumar, R.: Revisiting the recent European droughts from
a long-term perspective, Sci. Rep., 8, 9499,
https://doi.org/10.1038/s41598-018-27464-4, 2018.
Haylock, M. R., Hofstra, N., Klein Tank, A. M. G., Klok, E. J., Jones, P. D., and New, M.: A European daily high-resolution gridded data set of surface temperature and precipitation for 1950–2006, J. Geophys. Res., 113, D20119, https://doi.org/10.1029/2008JD010201, 2008.
Hersbach, H., Bell, B., Berrisford, P., Hirahara, S., Horányi, A.,
Muñoz-Sabater, J., Nicolas, J., Peubey, C., Radu, R., Schepers, D.,
Simmons, A., Soci, C., Abdalla, S., Abellan, X., Balsamo, G., Bechtold, P.,
Biavati, G., Bidlot, J., Bonavita, M., Chiara, G. D., Dahlgren, P., Dee, D.,
Diamantakis, M., Dragani, R., Flemming, J., Forbes, R., Fuentes, M., Geer,
A., Haimberger, L., Healy, S., Hogan, R. J., Hólm, E., Janisková,
M., Keeley, S., Laloyaux, P., Lopez, P., Lupu, C., Radnoti, G., Rosnay, P.
de, Rozum, I., Vamborg, F., Villaume, S., and Thépaut, J.-N.: The ERA5
global reanalysis, Q. J. Roy. Meteor. Soc., 146, 1999–2049,
https://doi.org/10.1002/qj.3803, 2020.
Hiederer, R. and Hiederer, R.: Mapping Soil Properties for Europe- Spatial
Representation of, Luxembourg: Publications Office of the European Union
Technical Research series, 47 pp., ISBN 978-92-79-32516-8, https://doi.org/10.2788/94128, 2013.
Hughes, J., Potter, N., Zhang, L., and Bridgart, R.: Conceptual Model
Modification and the Millennium Drought of Southeastern Australia, Water,
13, 669, https://doi.org/10.3390/w13050669, 2021.
ISPRA HIS: River discharge data, http://www.hiscentral.isprambiente.gov.it/hiscentral/default.aspx, last access: 8 March 2022.
Karban, R. and Pezzola, E.: Effects of a multi-year drought on a
drought-adapted shrub, Artemisia tridentata, Plant Ecol., 218, 547–554,
https://doi.org/10.1007/s11258-017-0710-5, 2017.
Kennedy, D., Swenson, S., Oleson, K. W., Lawrence, D. M., Fisher, R., Lola
da Costa, A. C., and Gentine, P.: Implementing Plant Hydraulics in the
Community Land Model, Version 5, J. Adv. Model. Earth Syst., 11, 485–513,
https://doi.org/10.1029/2018MS001500, 2019.
Klos, P. Z., Goulden, M. L., Riebe, C. S., Tague, C. L., O'Geen, A. T.,
Flinchum, B. A., Safeeq, M., Conklin, M. H., Hart, S. C., Berhe, A. A.,
Hartsough, P. C., Holbrook, W. S., and Bales, R. C.: Subsurface
plant-accessible water in mountain ecosystems with a Mediterranean climate,
WIRES Water, 5, e1277, https://doi.org/10.1002/wat2.1277,
2018.
Kottegoda, N. and Rosso, R.: Applied Statistics for Civil and
Environmental Engineers, Wiley, ISBN-13 978-1-4051-7917-1, 2008.
Kundzewicz, Z. W. and Robson, A. J.: Change detection in hydrological
records – a review of the methodology/Revue méthodologique de la
détection de changements dans les chroniques hydrologiques, Hydrol. Sci.
J., 49, 7–19, https://doi.org/10.1623/hysj.49.1.7.53993, 2004.
Lennox, R. J., Crook, D. A., Moyle, P. B., Struthers, D. P., and Cooke, S.
J.: Toward a better understanding of freshwater fish responses to an
increasingly drought-stricken world, Rev. Fish Biol. Fish., 29, 71–92,
https://doi.org/10.1007/s11160-018-09545-9, 2019.
Li, L., Yang, Z.-L., Matheny, A. M., Zheng, H., Swenson, S. C., Lawrence, D.
M., Barlage, M., Yan, B., McDowell, N. G., and Leung, L. R.: Representation
of Plant Hydraulics in the Noah-MP Land Surface Model: Model Development and
Multiscale Evaluation, J. Adv. Model. Earth Syst., 13, e2020MS002214,
https://doi.org/10.1029/2020MS002214, 2021.
Lorenzo-Lacruz, J., Vicente-Serrano, S. M., González-Hidalgo, J. C.,
López-Moreno, J. I., and Cortesi, N.: Hydrological drought response to
meteorological drought in the Iberian Peninsula, Clim. Res., 58, 117–131,
https://doi.org/10.3354/cr01177, 2013.
Marsh, T., Monkhouse, R., Arnell, N., Lees, M., and Reynard, N.: The 1988–92
drought, NERC Institute of Hydrology, ISBN 0948540591, 1994
Martens, B., Schumacher, D. L., Wouters, H., Muñoz-Sabater, J., Verhoest, N. E. C., and Miralles, D. G.: Evaluating the land-surface energy partitioning in ERA5, Geosci. Model Dev., 13, 4159–4181, https://doi.org/10.5194/gmd-13-4159-2020, 2020.
Massari, C., Brocca, L., Pellarin, T., Abramowitz, G., Filippucci, P., Ciabatta, L., Maggioni, V., Kerr, Y., and Fernandez Prieto, D.: A daily 25 km short-latency rainfall product for data-scarce regions based on the integration of the Global Precipitation Measurement mission rainfall and multiple-satellite soil moisture products, Hydrol. Earth Syst. Sci., 24, 2687–2710, https://doi.org/10.5194/hess-24-2687-2020, 2020.
Mastrotheodoros, T., Pappas, C., Molnar, P., Burlando, P., Manoli, G.,
Parajka, J., Rigon, R., Szeles, B., Bottazzi, M., Hadjidoukas, P., and
Fatichi, S.: More green and less blue water in the Alps during warmer
summers, Nat. Clim. Change, 10, 155–161,
https://doi.org/10.1038/s41558-019-0676-5, 2020.
Maurer, T., Avanzi, F., Glaser, S. D., and Bales, R. C.: Drivers of drought-induced shifts in the water balance through a Budyko approach, Hydrol. Earth Syst. Sci., 26, 589–607, https://doi.org/10.5194/hess-26-589-2022, 2022.
McDowell, N., Pockman, W. T., Allen, C. D., Breshears, D. D., Cobb, N.,
Kolb, T., Plaut, J., Sperry, J., West, A., Williams, D. G., and Yepez, E.
A.: Mechanisms of plant survival and mortality during drought: why do some
plants survive while others succumb to drought?, New Phytol., 178, 719–739,
https://doi.org/10.1111/j.1469-8137.2008.02436.x, 2008.
McDowell, N. G.: Deriving pattern from complexity in the processes
underlying tropical forest drought impacts, New Phytol., 219, 841–844,
https://doi.org/10.1111/nph.15341, 2018.
McKee, T. B., Doesken, N. J., and Kleist, J.: The relationship of
drought frequency and duration to time scales, in: Proceedings of the 8th
Conference on Applied Climatology, Anaheim, California, 17–22 January 1993, Boston, American Meteorological Society, 179–184, 1993.
McNamara, J. P., Tetzlaff, D., Bishop, K., Soulsby, C., Seyfried, M.,
Peters, N. E., Aulenbach, B. T., and Hooper, R.: Storage as a Metric of
Catchment Comparison, Hydrol. Process., 25, 3364–3371,
https://doi.org/10.1002/hyp.8113, 2011.
Miralles, D. G., Jiménez, C., Jung, M., Michel, D., Ershadi, A., McCabe, M. F., Hirschi, M., Martens, B., Dolman, A. J., Fisher, J. B., Mu, Q., Seneviratne, S. I., Wood, E. F., and Fernández-Prieto, D.: The WACMOS-ET project – Part 2: Evaluation of global terrestrial evaporation data sets, Hydrol. Earth Syst. Sci., 20, 823–842, https://doi.org/10.5194/hess-20-823-2016, 2016.
Miralles, D. G., Gentine, P., Seneviratne, S. I., and Teuling, A. J.:
Land-atmospheric feedbacks during droughts and heatwaves: state of the
science and current challenges, Ann. N. Y. Acad. Sci., 1436, 19–35,
https://doi.org/10.1111/nyas.13912, 2019.
Murphy, C., Harrigan, S., Hall, J., and Wilby, R. L.: Climate-driven trends
in mean and high flows from a network of reference stations in Ireland,
Hydrol. Sci. J., 58, 755–772, https://doi.org/10.1080/02626667.2013.782407,
2013.
Nogueira, M., Boussetta, S., Balsamo, G., Albergel, C., Trigo, I. F.,
Johannsen, F., Miralles, D. G., and Dutra, E.: Upgrading Land-Cover and
Vegetation Seasonality in the ECMWF Coupled System: Verification With
FLUXNET Sites, METEOSAT Satellite Land Surface Temperatures, and ERA5
Atmospheric Reanalysis, J. Geophys. Res.-Atmos., 126, e2020JD034163,
https://doi.org/10.1029/2020JD034163, 2021.
Orth, R. and Destouni, G.: Drought reduces blue-water fluxes more strongly
than green-water fluxes in Europe, Nat. Commun., 9, 3602,
https://doi.org/10.1038/s41467-018-06013-7, 2018.
Pagano, T. C., Wood, A. W., Ramos, M.-H., Cloke, H. L., Pappenberger, F., Clark, M. P., Cranston, M., Kavetski, D., Mathevet, T., Sorooshian, S., and Verkade, J. S.: Challenges of Operational River Forecasting, J. Hydrometeorol., 15, 1692–1707, https://doi.org/10.1175/JHM-D-13-0188.1, 2014.
Parry, S., Hannaford, J., Lloyd-Hughes, B., and Prudhomme, C.: Multi-year
droughts in Europe: analysis of development and causes, Hydrol. Res., 43,
689–706, https://doi.org/10.2166/nh.2012.024, 2012.
Peña-Angulo, D., Vicente-Serrano, S. M., Domínguez-Castro, F., Noguera, I., Tomas-Burguera, M., López-Moreno, J. I., Lorenzo-Lacruz, J., and El Kenawy, A.: Unravelling the role of vegetation on the different trends between climatic and hydrologic drought in headwater catchments of Spain, Anthropocene, 36, 100309, https://doi.org/10.1016/j.ancene.2021.100309, 2021.
Peña-Gallardo, M., Vicente-Serrano, S. M., Hannaford, J., Lorenzo-Lacruz, J., Svoboda, M., Domínguez-Castro, F., Maneta, M., Tomas-Burguera, M., and Kenawy, A. E.: Complex influences of meteorological drought time-scales on hydrological droughts in natural basins of the contiguous Unites States, J. Hydrol., 568, 611–625, https://doi.org/10.1016/j.jhydrol.2018.11.026, 2019.
Peters, E., Bier, G., van Lanen, H. A. J., and Torfs, P. J. J. F.:
Propagation and spatial distribution of drought in a groundwater catchment,
J. Hydrol., 321, 257–275, https://doi.org/10.1016/j.jhydrol.2005.08.004,
2006.
Peterson, T. J., Saft, M., Peel, M. C., and John, A.: Watersheds may not
recover from drought, Science, 372, 745–749,
https://doi.org/10.1126/science.abd5085, 2021.
Piniewski, M., Marcinkowski, P., and Kundzewicz, Z. W.: Trend detection in
river flow indices in Poland, Acta Geophys., 66, 347–360,
https://doi.org/10.1007/s11600-018-0116-3, 2018.
Qiu, J., Crow, W. T., Dong, J., and Nearing, G. S.: Model representation of the coupling between evapotranspiration and soil water content at different depths, Hydrol. Earth Syst. Sci., 24, 581–594, https://doi.org/10.5194/hess-24-581-2020, 2020.
Rempe, D. M. and Dietrich, W. E.: Direct observations of rock moisture, a
hidden component of the hydrologic cycle, P. Natl. Acad. Sci. USA, 115,
2664–2669, https://doi.org/10.1073/pnas.1800141115, 2018.
Rodell, M., Velicogna, I., and Famiglietti, J. S.: Satellite-based estimates
of groundwater depletion in India, Nature, 460, 999–1002,
https://doi.org/10.1038/nature08238, 2009.
Roudier, P., Andersson, J. C. M., Donnelly, C., Feyen, L., Greuell, W., and
Ludwig, F.: Projections of future floods and hydrological droughts in Europe
under a +2 ∘C global warming, Clim. Change, 135, 341–355,
https://doi.org/10.1007/s10584-015-1570-4, 2016.
Rungee, J., Bales, R., and Goulden, M.: Evapotranspiration response to
multiyear dry periods in the semiarid western United States, Hydrol.
Process., 33, 182–194, https://doi.org/10.1002/hyp.13322, 2019.
Rye, C. F. and Smettem, K. R. J.: The effect of water repellent soil surface
layers on preferential flow and bare soil evaporation, Geoderma, 289,
142–149, https://doi.org/10.1016/j.geoderma.2016.11.032, 2017.
Saft, M., Western, A. W., Zhang, L., Peel, M. C., and Potter, N. J.: The
influence of multiyear drought on the annual rainfall-runoff relationship:
An Australian perspective, Water Resour. Res., 51, 2444–2463,
https://doi.org/10.1002/2014WR015348, 2015.
Saft, M., Peel, M. C., Western, A. W., and Zhang, L.: Predicting shifts in
rainfall-runoff partitioning during multiyear drought: Roles of dry period
and catchment characteristics: runoff shifts during decadal drought, Water
Resour. Res., 52, 9290–9305, https://doi.org/10.1002/2016WR019525, 2016.
Samaniego, L., Thober, S., Kumar, R., Wanders, N., Rakovec, O., Pan, M.,
Zink, M., Sheffield, J., Wood, E. F., and Marx, A.: Anthropogenic warming
exacerbates European soil moisture droughts, Nat. Clim. Change, 8, 421–426,
https://doi.org/10.1038/s41558-018-0138-5, 2018.
Seager, R., Liu, H., Kushnir, Y., Osborn, T. J., Simpson, I. R., Kelley, C. R., and Nakamura, J.: Mechanisms of Winter Precipitation Variability in the European–Mediterranean Region Associated with the North Atlantic Oscillation, J. Climate, 33, 7179–7196, 2020.
Seneviratne, S. I., Corti, T., Davin, E. L., Hirschi, M., Jaeger, E. B.,
Lehner, I., Orlowsky, B., and Teuling, A. J.: Investigating soil
moisture–climate interactions in a changing climate: A review, Earth-Sci.
Rev., 99, 125–161, https://doi.org/10.1016/j.earscirev.2010.02.004, 2010.
Senf, C., Buras, A., Zang, C. S., Rammig, A., and Seidl, R.: Excess forest
mortality is consistently linked to drought across Europe, Nat. Commun., 11,
6200, https://doi.org/10.1038/s41467-020-19924-1, 2020.
Sheffield, J. and Wood, E. F.: Projected changes in drought occurrence under
future global warming from multi-model, multi-scenario, IPCC AR4
simulations, Clim. Dynam, 31, 79–105,
https://doi.org/10.1007/s00382-007-0340-z, 2008.
Sheffield, J. and Wood, E. F.: Drought: Past problems and future scenarios, Publisher Taylor and Francis, https://doi.org/10.4324/9781849775250, ebook ISBN 9781849775250, 210 pp., January 2012.
SNIRH: Portuguese national database, http://snirh.pt/, last access: 8 March 2022.
Spence, C.: A Paradigm Shift in Hydrology: Storage Thresholds Across Scales
Influence Catchment Runoff Generation, Geogr. Compass, 4, 819–833,
https://doi.org/10.1111/j.1749-8198.2010.00341.x, 2010.
Spinoni, J., Naumann, G., Vogt, J. V., and Barbosa, P.: The biggest drought
events in Europe from 1950 to 2012, J. Hydrol. Reg. Stud., 3, 509–524,
https://doi.org/10.1016/j.ejrh.2015.01.001, 2015.
Stahl, K., Hisdal, H., Hannaford, J., Tallaksen, L. M., van Lanen, H. a. J.,
Sauquet, E., Demuth, S., Fendekova, M., and Jódar, J.: Streamflow trends
in Europe: evidence from a dataset of near-natural catchments, Hydrol. Earth
Syst. Sci., 14, 2367–2382, https://doi.org/10.5194/hess-14-2367-2010, 2010.
Teuling, A. J. and Hoek van Dijke, A. J.: Forest age and water yield,
Nature, 578, E16–E18, https://doi.org/10.1038/s41586-020-1941-5, 2020.
Teuling, A. J., Van Loon, A. F., Seneviratne, S. I., Lehner, I., Aubinet,
M., Heinesch, B., Bernhofer, C., Grünwald, T., Prasse, H., and Spank,
U.: Evapotranspiration amplifies European summer drought: Evapotranspiration
and summer droughts, Geophys. Res. Lett., 40, 2071–2075,
https://doi.org/10.1002/grl.50495, 2013.
Teuling, A. J., de Badts, E. A. G., Jansen, F. A., Fuchs, R., Buitink, J., Hoek van Dijke, A. J., and Sterling, S. M.: Climate change, reforestation/afforestation, and urbanization impacts on evapotranspiration and streamflow in Europe, Hydrol. Earth Syst. Sci., 23, 3631–3652, https://doi.org/10.5194/hess-23-3631-2019, 2019.
Tian, W., Liu, X., Liu, C., and Bai, P.: Investigation and simulations of
changes in the relationship of precipitation-runoff in drought years, J.
Hydrol., 565, 95–105, https://doi.org/10.1016/j.jhydrol.2018.08.015, 2018.
Tian, W., Bai, P., Wang, K., Liang, K., and Liu, C.: Simulating the change
of precipitation-runoff relationship during drought years in the eastern
monsoon region of China, Sci. Total Environ., 723, 138172,
https://doi.org/10.1016/j.scitotenv.2020.138172, 2020.
Tijdeman, E., Barker, L. J., Svoboda, M. D., and Stahl, K.: Natural and
Human Influences on the Link Between Meteorological and Hydrological Drought
Indices for a Large Set of Catchments in the Contiguous United States, Water
Resour. Res., 54, 6005–6023, https://doi.org/10.1029/2017WR022412, 2018.
Troch, P. A., Lahmers, T., Meira, A., Mukherjee, R., Pedersen, J. W., Roy,
T., and Valdés-Pineda, R.: Catchment coevolution: A useful framework for
improving predictions of hydrological change?, Water Resour. Res., 51,
4903–4922, https://doi.org/10.1002/2015WR017032, 2015.
Unesco: Map of the world distribution of arid regions: Explanatory note,
Unesco, ISBN 92-3-101484-6, United Nations Educational, Scientific and Cultural Organization, Paris, 1979.
Van Loon, A. F. and Laaha, G.: Hydrological drought severity explained by
climate and catchment characteristics, J. Hydrol., 526, 3–14,
https://doi.org/10.1016/j.jhydrol.2014.10.059, 2015.
Vicente-Serrano, S. M., Lopez-Moreno, J.-I., Beguería, S.,
Lorenzo-Lacruz, J., Sanchez-Lorenzo, A., García-Ruiz, J. M.,
Azorin-Molina, C., Morán-Tejeda, E., Revuelto, J., Trigo, R., Coelho,
F., and Espejo, F.: Evidence of increasing drought severity caused by
temperature rise in southern Europe, Environ. Res. Lett., 9, 044001,
https://doi.org/10.1088/1748-9326/9/4/044001, 2014.
Vicente-Serrano, S. M., Peña-Gallardo, M., Hannaford, J., Murphy, C.,
Lorenzo-Lacruz, J., Dominguez-Castro, F., López-Moreno, J. I.,
Beguería, S., Noguera, I., Harrigan, S., and Vidal, J.-P.: Climate,
Irrigation, and Land Cover Change Explain Streamflow Trends in Countries
Bordering the Northeast Atlantic, Geophys. Res. Lett., 46, 10821–10833,
https://doi.org/10.1029/2019GL084084, 2019.
Wehner, M., Easterling, D. R., Lawrimore, J. H., Heim, R. R., Vose, R. S.,
and Santer, B. D.: Projections of Future Drought in the Continental United
States and Mexico, J. Hydrometeorol., 12, 1359–1377,
https://doi.org/10.1175/2011JHM1351.1, 2011.
Short summary
Droughts are a creeping disaster, meaning that their onset, duration and recovery are challenging to monitor and forecast. Here, we provide further evidence of an additional challenge of droughts, i.e. the fact that the deficit in water supply during droughts is generally much more than expected based on the observed decline in precipitation. At a European scale we explain this with enhanced evapotranspiration, sustained by higher atmospheric demand for moisture during such dry periods.
Droughts are a creeping disaster, meaning that their onset, duration and recovery are...
