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Abstract:

This work provides an initial overview of climate features and their related hydrological impacts during the recent extreme droughts (1995, 1998, 2005 and 2010) in the upper Solimes River (western Amazon), using comprehensive in situ discharge and rainfall datasets. The droughts are generally associated with positive SST anomalies in the tropical North Atlantic and weak trade winds and water vapor transport toward the upper Solimes, which, in association with increased subsidence over central and southern Amazon, explain the lack of rainfall and very low discharge values. But in 1998, toward the end of the 1997-98 El Nio event, the drought is more likely related to an anomalous divergence of water vapor in the western Amazon that is characteristic of a warm event in the Pacific. During the austral spring and winter of 2010, the most severe drought since the seventies has been registered in the upper Solimes. Its intensity and its length, when compared to the 2005 drought, can be explained by the addition of an El Nio in austral summer and a very warm episode in the Atlantic in boreal spring and summer. As in 2005, the lack of water in 2010 was more important in the southern tropical tributaries of the upper Solimes than in the northern ones. Copyright 2011 by the American Geophysical Union.

Registro:

Documento: Artículo
Título:Climate variability and extreme drought in the upper Solimões River (western Amazon Basin): Understanding the exceptional 2010 drought
Autor:Espinoza, J.C.; Ronchail, J.; Guyot, J.L.; Junquas, C.; Vauchel, P.; Lavado, W.; Drapeau, G.; Pombosa, R.
Filiación:Instituto Geofísico Del per, Calle Badajoz 169 IV Etapa, Mayorazgo, Ate. Lima 03, Peru
Facultad de Ingeniería Agrícola, Universidad Agraria la Molina, Lima, Peru
Laboratoire d'Oceanographie et de Climat: Experimentation et Approches Numeriques, Université Paris Diderot, Sorbonne Paris Cité, Paris F-75005, France
Géosciences Environnement Toulouse, Toulouse F-31400, France
Institut de Recherche Pour le Développement, Brasilia, Brazil
Centro de Investigaciones Del Mar y la Atmosfera, Buenos Aires 1428, Argentina
Institut de Recherche Pour le Développement, Lima, Peru
Servicio Nacional de Meteorología e Hidrología, Jr. Cahuide 785, Jesús María, Lima 11, Peru
Ple de Recherche Pour l'Organisation et la Diffusion de l'Information Géographique, Paris, France
Instituto Nacional de Meteorología e Hidrología, Iñaquito 700 y Correa, Quito, Ecuador
Palabras clave:Climatology; Rain; Water vapor; Amazon basin; Austral spring; Austral summers; Boreal Spring; Climate variability; Data sets; Hydrological impacts; In-situ; North Atlantic; SST anomalies; Trade winds; Water vapor transport; Drought; climate variation; data set; drought; El Nino; episodic event; extreme event; hydrological regime; regional climate; river discharge; sea surface temperature; seventeenth century; temperature anomaly; trade wind; water vapor; Amazon River; Atlantic Ocean; Brazil; Pacific Ocean
Año:2011
Volumen:38
Número:13
DOI: http://dx.doi.org/10.1029/2011GL047862
Título revista:Geophysical Research Letters
Título revista abreviado:Geophys. Res. Lett.
ISSN:00948276
CODEN:GPRLA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00948276_v38_n13_p_Espinoza

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Citas:

---------- APA ----------
Espinoza, J.C., Ronchail, J., Guyot, J.L., Junquas, C., Vauchel, P., Lavado, W., Drapeau, G.,..., Pombosa, R. (2011) . Climate variability and extreme drought in the upper Solimões River (western Amazon Basin): Understanding the exceptional 2010 drought. Geophysical Research Letters, 38(13).
http://dx.doi.org/10.1029/2011GL047862
---------- CHICAGO ----------
Espinoza, J.C., Ronchail, J., Guyot, J.L., Junquas, C., Vauchel, P., Lavado, W., et al. "Climate variability and extreme drought in the upper Solimões River (western Amazon Basin): Understanding the exceptional 2010 drought" . Geophysical Research Letters 38, no. 13 (2011).
http://dx.doi.org/10.1029/2011GL047862
---------- MLA ----------
Espinoza, J.C., Ronchail, J., Guyot, J.L., Junquas, C., Vauchel, P., Lavado, W., et al. "Climate variability and extreme drought in the upper Solimões River (western Amazon Basin): Understanding the exceptional 2010 drought" . Geophysical Research Letters, vol. 38, no. 13, 2011.
http://dx.doi.org/10.1029/2011GL047862
---------- VANCOUVER ----------
Espinoza, J.C., Ronchail, J., Guyot, J.L., Junquas, C., Vauchel, P., Lavado, W., et al. Climate variability and extreme drought in the upper Solimões River (western Amazon Basin): Understanding the exceptional 2010 drought. Geophys. Res. Lett. 2011;38(13).
http://dx.doi.org/10.1029/2011GL047862