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| Titel |
Linkages between ENSO/PDO signals and precipitation, streamflow in China during the last 100 years |
| VerfasserIn |
R. Ouyang, W. Liu, G. Fu, C. Liu, L. Hu, H. Wang |
| 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 ; 18, no. 9 ; Nr. 18, no. 9 (2014-09-17), S.3651-3661 |
| Datensatznummer |
250120472
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| Publikation (Nr.) |
 copernicus.org/hess-18-3651-2014.pdf |
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| Zusammenfassung |
| This paper investigates the single and combined impacts of El
Niño–Southern Oscillation (ENSO) and the Pacific Decadal Oscillation
(PDO) on precipitation and streamflow in China over the last century.
Results indicate that the precipitation and streamflow overall decrease
during El Niño/PDO warm phase periods and increase during La
Niña/PDO cool phase periods in the majority of China, although there are
regional and seasonal differences. Precipitation and streamflow in the
Yellow River basin, Yangtze River basin and Pearl River basin are more
significantly influenced by El Niño and La Niña events than is precipitation and streamflow in the Songhua River basin, especially in
October and November. Moreover, significant influence of ENSO on
streamflow in the Yangtze River mainly occurs in summer and autumn while
in the Pearl River influence primarily occurs in the winter and spring. The
precipitation and streamflow are relatively greater in the warm PDO phase in the
Songhua River basin and several parts of the Yellow River basin and
relatively less in the Pearl River basin and most parts of Northwest
China compared to those in the cool PDO phase, though there is little
significance detected by Wilcoxon signed-rank test. When
considering the combined influence of ENSO and PDO, the responses of
precipitation/streamflow are shown to be opposite in northern China and
southern China, with ENSO-related precipitation/streamflow enhanced in
northern China and decreased in southern China during the warm PDO
phases, and enhanced in southern China and decreased in northern
China during the cool PDO phases. It is hoped that this study will be beneficial for
understanding the precipitation/streamflow responses to the changing
climate and will correspondingly provide valuable reference for water
resources prediction and management across China. |
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