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Analysis of the El Niño Effect on the Discharge of Selected Rivers in the Asia-Pacific Region
Discharge records originating from 78 rivers within the Asia-Pacific region are used to assess a possible relationship between a temporal El Niño-Southern Oscillation (ENSO) Index and regional discharges of rivers. The rivers selected have long monthly discharge series and are geographically distributed throughout the whole region. Analyses of variance are used to identify the sub-regions most teleconnected to the ENSO signal. Composite analyses show the temporal patterns of the relationships between river discharge and the ENSO signal and the possible presence of a time lagged relationship. The analyses show that the rivers of the Oceania-Pacific region are the most affected and that a majority of rivers show a similar temporal pattern, thus allowing the construction of a regional composite streamflow index. The temporal patterns of the identified relationships demonstrate the possibility of forecasting the occurrence of abnormally high or low flows (floods/droughts) months ahead of time.
Analysis of the El Niño Effect on the Discharge of Selected Rivers in the Asia-Pacific Region
Discharge records originating from 78 rivers within the Asia-Pacific region are used to assess a possible relationship between a temporal El Niño-Southern Oscillation (ENSO) Index and regional discharges of rivers. The rivers selected have long monthly discharge series and are geographically distributed throughout the whole region. Analyses of variance are used to identify the sub-regions most teleconnected to the ENSO signal. Composite analyses show the temporal patterns of the relationships between river discharge and the ENSO signal and the possible presence of a time lagged relationship. The analyses show that the rivers of the Oceania-Pacific region are the most affected and that a majority of rivers show a similar temporal pattern, thus allowing the construction of a regional composite streamflow index. The temporal patterns of the identified relationships demonstrate the possibility of forecasting the occurrence of abnormally high or low flows (floods/droughts) months ahead of time.
Analysis of the El Niño Effect on the Discharge of Selected Rivers in the Asia-Pacific Region
Cluis, Daniel (Autor:in) / Laberge, Claude (Autor:in)
Water International ; 27 ; 279-293
01.06.2002
15 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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