Articles | Volume 28, issue 23
https://doi.org/10.5194/hess-28-5229-2024
© Author(s) 2024. 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-28-5229-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
05 Dec 2024
Research article |
| 05 Dec 2024
| 05 Dec 2024
Determining the threshold of issuing flash flood warnings based on people's response process simulation
Ruikang Zhang
State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, China
Hubei Provincial Key Lab of Water System Science for Sponge City Construction, Wuhan University, Wuhan, China
Bureau of Hydrology, Changjiang Water Resources Commission, Wuhan, China
Dedi Liu
CORRESPONDING AUTHOR
State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, China
Hubei Provincial Key Lab of Water System Science for Sponge City Construction, Wuhan University, Wuhan, China
Department of Earth Science, University of the Western Cape, Robert Sobukwe Road, Bellville 7535, South Africa
Lihua Xiong
State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, China
Hubei Provincial Key Lab of Water System Science for Sponge City Construction, Wuhan University, Wuhan, China
Jie Chen
State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, China
Hubei Provincial Key Lab of Water System Science for Sponge City Construction, Wuhan University, Wuhan, China
Hua Chen
State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, China
Hubei Provincial Key Lab of Water System Science for Sponge City Construction, Wuhan University, Wuhan, China
Jiabo Yin
State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, China
Hubei Provincial Key Lab of Water System Science for Sponge City Construction, Wuhan University, Wuhan, China
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Shanlin Tong, Weiguang Wang, Jie Chen, Chong-Yu Xu, Hisashi Sato, and Guoqing Wang
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Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2021-460, https://doi.org/10.5194/essd-2021-460, 2022
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To make full use of the advantages of isotope observations and simulations, this study generates a new dataset by integrating multi-GCM data based on data fusion and bias correction methods. This dataset contains monthly δ18Op over mainland China for the 1870–2017 period with a spatial resolution of 50–60 km. The built isoscape shows similar spatial and temporal distribution characteristics to observations, which is reliable and useful to extend the time and space of observations in China.
Jinghua Xiong, Shenglian Guo, Jie Chen, and Jiabo Yin
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2021-645, https://doi.org/10.5194/hess-2021-645, 2022
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Although the “dry gets drier and wet gets wetter” (DDWW) paradigm is widely used to describe the trends in wetting and drying globally, we show that 27.1 % of global land agrees with the paradigm, while 22.4 % shows the opposite pattern during the period 1985–2014 from the perspective of terrestrial water storage change. Similar percentages are discovered under different scenarios during the future period. Our findings will benefit the understanding of hydrological responses under climate change.
Wei Li, Lu Li, Jie Chen, Qian Lin, and Hua Chen
Hydrol. Earth Syst. Sci., 25, 4531–4548, https://doi.org/10.5194/hess-25-4531-2021, https://doi.org/10.5194/hess-25-4531-2021, 2021
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Reforestation can influence climate, but the sensitivity of summer rainfall to reforestation is rarely investigated. We take two reforestation scenarios to assess the impacts of reforestation on summer rainfall under different reforestation proportions and explore the potential mechanisms. This study concludes that reforestation increases summer rainfall amount and extremes through thermodynamics processes, and the effects are more pronounced in populated areas than over the whole basin.
Ren Wang, Pierre Gentine, Jiabo Yin, Lijuan Chen, Jianyao Chen, and Longhui Li
Hydrol. Earth Syst. Sci., 25, 3805–3818, https://doi.org/10.5194/hess-25-3805-2021, https://doi.org/10.5194/hess-25-3805-2021, 2021
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Assessment of changes in the global water cycle has been a challenge. This study estimated long-term global latent heat and sensible heat fluxes for recent decades using machine learning and ground observations. The results found that the decline in evaporative fraction was typically accompanied by an increase in long-term runoff in over 27.06 % of the global land areas. The observation-driven findings emphasized that surface vegetation has great impacts in regulating water and energy cycles.
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Short summary
Flash flood warnings cannot be effective without people’s responses to them. We propose a method to determine the threshold of issuing warnings based on a people’s response process simulation. The results show that adjusting the warning threshold according to people’s tolerance levels to the failed warnings can improve warning effectiveness, but the prerequisite is to increase forecasting accuracy and decrease forecasting variance.
Flash flood warnings cannot be effective without people’s responses to them. We propose a method...
