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| Titel |
Analysis of long-term terrestrial water storage variations in the Yangtze River basin |
| VerfasserIn |
Y. Huang, M. S. Salama, M. S. Krol, R. Velde, A. Y. Hoekstra, Y. Zhou, Z. Su |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 17, no. 5 ; Nr. 17, no. 5 (2013-05-27), S.1985-2000 |
| Datensatznummer |
250018884
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| Publikation (Nr.) |
 copernicus.org/hess-17-1985-2013.pdf |
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| Zusammenfassung |
| In this study, we analyze 32 yr of terrestrial water storage (TWS) data
obtained from the Interim Reanalysis Data (ERA-Interim) and Noah model from
the Global Land Data Assimilation System (GLDAS-Noah) for the period 1979 to
2010. The accuracy of these datasets is validated using 26 yr (1979–2004)
of runoff data from the Yichang gauging station and comparing them with 32 yr of
independent precipitation data obtained from the Global Precipitation
Climatology Centre Full Data Reanalysis Version 6 (GPCC) and NOAA's
PRECipitation REConstruction over Land (PREC/L). Spatial and temporal
analysis of the TWS data shows that TWS in the Yangtze River basin has
decreased significantly since the year 1998. The driest period in the basin
occurred between 2005 and 2010, and particularly in the middle and lower
Yangtze reaches. The TWS figures changed abruptly to persistently high
negative anomalies in the middle and lower Yangtze reaches in 2004. The year
2006 is identified as major inflection point, at which the system starts
exhibiting a persistent decrease in TWS. Comparing these TWS trends with
independent precipitation datasets shows that the recent decrease in TWS can
be attributed mainly to a decrease in the amount of precipitation. Our
findings are based on observations and modeling datasets and confirm
previous results based on gauging station datasets. |
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