Articles | Volume 25, issue 9
Hydrol. Earth Syst. Sci., 25, 4759–4772, 2021
https://doi.org/10.5194/hess-25-4759-2021

Special issue: Analysis of atmospheric water vapour observations and their...

Hydrol. Earth Syst. Sci., 25, 4759–4772, 2021
https://doi.org/10.5194/hess-25-4759-2021

Research article 02 Sep 2021

Research article | 02 Sep 2021

Contribution of moisture sources to precipitation changes in the Three Gorges Reservoir Region

Ying Li et al.

Data sets

The ERA-Interim reanalysis dataset European Centre for Medium-Range Weather Forecast https://apps.ecmwf.int/datasets/data/interim-full-daily/

Modern-Era Retrospective analysis for Research and Applications, Version 2 NASA Goddard Earth Sciences Data and Information Services Center https://disc.gsfc.nasa.gov/datasets?project=MERRA-2

RA-55: Japanese 55-year Reanalysis, Daily 3-Hourly and 6-Hourly Data Japan Meteorological Agency https://rda.ucar.edu/datasets/ds628.0/

China Monthly Surface Precipitation 0.5° × 0.5° Gridded Data Set (V2.0 China Meteorological Data Service Center http://data.cma.cn/site/showSubject/id/46.html

Tropical Rainfall Measuring Mission (TRMM) (TMPA/3B43) Rainfall Estimate L3 1 month 0.25 degree × 0.25 degree V7 NASA Goddard Earth Sciences Data and Information Services Center https://disc.gsfc.nasa.gov/datasets/TRMM_3B43_7/summary?keywords=TMPA

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Short summary
Precipitation change in the Three Gorges Reservoir Region (TGRR) plays a critical role in the operation and regulation of the Three Gorges Dam and the protection of residents and properties. We investigated the long-term contribution of moisture sources to precipitation changes in this region with an atmospheric moisture tracking model. We found that southwestern source regions (especially the southeastern tip of the Tibetan Plateau) are the key regions that control TGRR precipitation changes.