The drought of the century in the Amazon Basin: an analysis of the regional variation of rainfall in South America in 1926

Acta Amazonica

Earle Williams²  Alaor Dall' Antonia¹  Vitoria Dall' Antonia¹  Jorge Mathias De Almeida¹  Francisco Suarez²  Brant Liebmann¹  Ana Claudia Mendes Malhado¹ 

[1],Massachusetts Institute of Technology Parsons Laboratory Cambridge MA ,USA

关键词: Rainfall;    climatic history;    drought;    chuva;    história climática;    seca;   

DOI  :  10.1590/S0044-59672005000200013

来源: SciELO

【 摘 要 】

The most severe drought in tropical South America during the 20th century occurred in 1926. This extreme El Nino year is further documented anecdotally, in an update of the river stage observations at Manaus, and in annual rainfall records. The annual rainfall anomaly is an east-west dipole over tropical South America, with drought to the west over the Amazon basin whose discharge is documented at Manaus, and with a surplus to the east and including the Nordeste region of Brazil. Speculations about a role for aerosol in aggravating the drought are discussed.

【 授权许可】

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