Discharge variability within the Amazon basin
作者： N. Filizola , Jacques Callède , Gérard Cochonneau , J. Ronchail , Jean-Loup Guyot
DOI:
关键词:
摘要: The discharge data of 80 stations (1981-2002) located in the Amazon basin are analysed relation to SST tropical Pacific and Atlantic oceans, using composite analysis. A wavelet analysis is performed on 100-year series at Obidos (downstream Amazon). Discharge lower than normal during El Nino except western rivers (Solimoes, upper Negro, Japura) southernmost regions (upper Madeira, Tapajos Xingu basins). During La Nina, higher northeastern and, contrast, Madeira basin. However, ENSO signal not stationary 20th century, when considering high flow mean discharge. High discharges a vast central region associated with cold over Northern Tropical (NATL) low-flow season. Furthermore, common, though permanent, near-decadal observed low NATL SST. Amazonian related south SST; however, these signals space time dependent.
cabdirect.org参考文章(23)
Paul C. Liu, Wavelet Spectrum Analysis and Ocean Wind Waves Wavelet Analysis and Its Applications. ,vol. 4, pp. 151- 166 ,(1994) , 10.1016/B978-0-08-052087-2.50012-8
Jonathan A. Foley, Aurélie Botta, Michael T. Coe, Marcos Heil Costa, El Niño-Southern oscillation and the climate, ecosystems and rivers of Amazonia Global Biogeochemical Cycles. ,vol. 16, pp. 79- 1 ,(2002) , 10.1029/2002GB001872
Jos� A. Marengo, Variations and change in south American streamflow Climatic Change. ,vol. 31, pp. 99- 117 ,(1995) , 10.1007/BF01092983
Josyane Ronchail, Luc Bourrel, Gérard Cochonneau, Philippe Vauchel, Luis Phillips, Annibal Castro, Jean-Loup Guyot, Eurides de Oliveira, Inundations in the Mamoré basin (south-western Amazon—Bolivia) and sea-surface temperature in the Pacific and Atlantic Oceans Journal of Hydrology. ,vol. 302, pp. 223- 238 ,(2005) , 10.1016/J.JHYDROL.2004.07.005
Kishan N. Amarasekera, Robert F. Lee, Earle R. Williams, Elfatih A.B. Eltahir, ENSO and the natural variability in the flow of tropical rivers Journal of Hydrology. ,vol. 200, pp. 24- 39 ,(1997) , 10.1016/S0022-1694(96)03340-9
C�ntia Bertacchi Uvo, Ute T�lle, Ronny Berndtsson, Forecasting discharge in Amazonia using artificial neural networks International Journal of Climatology. ,vol. 20, pp. 1495- 1507 ,(2000) , 10.1002/1097-0088(200010)20:12<1495::AID-JOC549>3.0.CO;2-F
J. E. RICHEY, C. NOBRE, C. DESER, Amazon River Discharge and Climate Variability: 1903 to 1985 Science. ,vol. 246, pp. 101- 103 ,(1989) , 10.1126/SCIENCE.246.4926.101
Vincent Moron, Sylvain Bigot, Pascal Roucou, Rainfall variability in subequatorial America and Africa and relationships with the main sea-surface temperature modes (1951–1990) International Journal of Climatology. ,vol. 15, pp. 1297- 1322 ,(1995) , 10.1002/JOC.3370151202
JACQUES CALLEDE, JEAN LOUP GUYOT, JOSYANE RONCHAIL, MICHEL MOLINIER, EURIDES DE OLIVEIRA, L'Amazone à Óbidos (Brésil): étude statistique des débits et bilan hydrologique Hydrological Sciences Journal-journal Des Sciences Hydrologiques. ,vol. 47, pp. 321- 333 ,(2002) , 10.1080/02626660209492933
José A. Marengo, Javier Tomasella, Cintia R. Uvo, Trends in streamflow and rainfall in tropical South America : Amazonia, eastern Brazil, and northwestern Peru Journal of Geophysical Research. ,vol. 103, pp. 1775- 1783 ,(1998) , 10.1029/97JD02551