EGU25-4854, updated on 14 Mar 2025
https://doi.org/10.5194/egusphere-egu25-4854
EGU General Assembly 2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Poster | Thursday, 01 May, 10:45–12:30 (CEST), Display time Thursday, 01 May, 08:30–12:30
 
Hall X1, X1.80
Global quantifying the fractions of precipitation transformed into terrestrial water storage and their changes
Yulong Zhong1,2, Baoming Tian1, Gerui Cheng1, Hyunglok Kim3, Yunlong Wu1, and Lizhe Wang4
Yulong Zhong et al.
  • 1School of Geography and Information Engineering, China University of Geosciences (Wuhan), Wuhan, China (zhongyl@cug.edu.cn)
  • 2Institute of Geodesy and Geoinformation, University of Bonn, Bonn, Germany
  • 3School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
  • 4School of Computer Science, China University of Geosciences (Wuhan), Wuhan, China

The pivotal role of precipitation in driving the terrestrial water cycle is well-known, but quantifying its transformation into terrestrial water storage remains challenging. This study introduces a new metric -- the average daily fraction of precipitation transformed into terrestrial water storage -- leveraging an advanced statistical reconstruction method and data from the Gravity Recovery and Climate Experiment (GRACE) satellites and their follow-on mission. Results show that about 64% of land precipitation contributes to terrestrial water storage across 121 global river basins from 2002 to 2021, with notable variations across climatic and geographical regions. We also analyze changes in this fraction across global mascons. Our findings shed light on the interactions between precipitation, land surface processes, and climate change, providing valuable insights for water resource management and hydrological modeling.

How to cite: Zhong, Y., Tian, B., Cheng, G., Kim, H., Wu, Y., and Wang, L.: Global quantifying the fractions of precipitation transformed into terrestrial water storage and their changes, EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-4854, https://doi.org/10.5194/egusphere-egu25-4854, 2025.