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Advances in Geosciences An open-access journal for refereed proceedings and special publications
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Volume 22 | Copyright
Adv. Geosci., 22, 3-11, 2009
https://doi.org/10.5194/adgeo-22-3-2009
© Author(s) 2009. This work is distributed under
the Creative Commons Attribution 3.0 License.

  13 Oct 2009

13 Oct 2009

The Andes climate and weather

R. D. Garreaud R. D. Garreaud
  • Department of Geophysics, Universidad de Chile, Santiago, Chile

Abstract. This paper documents the main features of the weather, climate and climate variability over Andes cordillera in South America on the basis of instrumental observations. We first provide a basic physical understanding of the mean annual cycle of the atmospheric circulation and precipitation and over the Andes and adjacent lowlands. In particular, the diversity of precipitation, temperature and wind patterns is interpreted in terms of the long meridional extent of the Andes and the disruption of the large-scale circulation by this formidable topographic barrier. We also document the impact of the El Niño Southern Oscillation phenomenon on the temperature and precipitation regimes along the Andes.

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