Preprints
https://doi.org/10.5194/hess-2022-131
https://doi.org/10.5194/hess-2022-131
 
29 Apr 2022
29 Apr 2022
Status: a revised version of this preprint is currently under review for the journal HESS.

First implementation of a new cross-disciplinary observation strategy for heavy precipitation events from formation to flooding

Andreas Wieser1,, Andreas Güntner2,8,, Peter Dietrich3,9, Jan Handwerker1, Dina Khordakova4, Uta Ködel3, Martin Kohler1, Hannes Mollenhauer3, Bernhard Mühr5, Erik Nixdorf6,10, Marvin Reich2, Christian Rolf4, Martin Schrön3, Claudia Schütze7, and Ute Weber7 Andreas Wieser et al.
  • 1Institute for Meteorology and Climate Research, Karlsruhe Institute of Technology (KIT), Karlsruhe, 76021, Germany
  • 2Helmholtz-Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, 14473, Germany
  • 3Department Monitoring and Exploration Technologies, Helmholtz Centre for Environmental Research (UFZ), Leipzig, 04318, Germany
  • 4Institute of Energy and Climate Research (IEK-7), Forschungszentrum Jülich (FZJ), Jülich, 52428, Germany
  • 5EWB Wetterberatung, Karlsruhe, 76199, Germany
  • 6Department Environmental Informatics, Helmholtz Centre for Environmental Research (UFZ), Leipzig, 04318, Germany
  • 7Department Computational Hydrosystems, Helmholtz Centre for Environmental Research (UFZ), Leipzig, 04318, Germany
  • 8Institute of Environmental Science and Geography, Potsdam University, Potsdam, 14476, Germany
  • 9Center for Applied Geoscience, University of Tübingen, Tübingen, 72074, Germany
  • 10Federal Institute for Geosciences and Natural Resources, Department of Groundwater and Soil, Hannover, 30655, Germany
  • These authors contributed equally to this work.

Abstract. Heavy Precipitation Events (HPE) are the result of enormous quantities of water vapour being transported to a limited area. HPE rainfall rates and volumes cannot not be fully stored on and below the land surface, often leading to floods with short forecast lead times that may cause damage to humans, properties, and infrastructure. Towards an improved scientific understanding of the entire process chain from HPE formation to flooding at the catchment scale, we propose an elaborated event-triggered observation concept. It combines flexible mobile observing systems out of the fields of meteorology, hydrology and geophysics with stationary networks to capture atmospheric transport processes, heterogeneous precipitation patterns, land surface and subsurface storage processes, and runoff dynamics.

As part of the Helmholtz Research Infrastructure MOSES (Modular Observation Solutions for Earth Systems), the added value of our observation strategy is exemplarily shown by its first implementation in the Mueglitz river basin (210 km2), a headwater catchment of the Elbe in the Eastern Ore Mountains with historical and recent extreme flood events. Punctual radiosonde observations combined with continuous microwave radiometer measurements and back trajectory calculations deliver information about the moisture sources, initiation and development of HPE X-Band radar observations calibrated by ground based disdrometers and rain gauges deliver precipitation information with high spatial resolution. Runoff measurements in small sub-catchments complement the discharge times series of the operational network of gauging stations. Closing the catchment water balance at the HPE scale, however, is still challenging. While evapotranspiration is of less importance when studying short term convective HPE, information on the spatial distribution and on temporal variations of soil moisture and total water storage by stationary and roving cosmic ray measurements and by hybrid terrestrial gravimetry offer prospects for improved quantification of the storage term of the water balance equation. Overall, the cross-disciplinary observation strategy presented here opens up new ways towards an integrative and scale-bridging understanding of event dynamics.

Andreas Wieser et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on hess-2022-131', Anonymous Referee #1, 30 May 2022
    • AC1: 'Reply on RC1', Andreas Wieser, 13 Jul 2022
  • RC2: 'Review of hess-2022-131 by Rolf Hut', Rolf Hut, 10 Jun 2022
    • AC2: 'Reply on RC2', Andreas Wieser, 13 Jul 2022

Andreas Wieser et al.

Andreas Wieser et al.

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Short summary
We present an event-triggered observation concept which covers the entire process chain from heavy precipitation to flooding at the catchment scale. It combines flexible and mobile observing systems out of the fields of meteorology, hydrology and geophysics with stationary networks to capture atmospheric transport processes, heterogeneous precipitation patterns, land surface and subsurface storage processes, and runoff dynamics.