Open AccessExtreme precipitation over Southeastern Brazil in the austral summer and relations with the Southern Hemisphere annular mode
Author(s) -
Vasconcellos Fernanda Cerqueira,
Cavalcanti Iracema F. A.
Publication year - 2010
Publication title -
atmospheric science letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.951
H-Index - 45
ISSN - 1530-261X
DOI - 10.1002/asl.247
Subject(s) - precipitation , climatology , northern hemisphere , mode (computer interface) , environmental science , landslide , atmospheric circulation , southern hemisphere , geography , geology , meteorology , geotechnical engineering , computer science , operating system
Southeastern Brazil is a highly industrialized and populated region which largely contributes to the country's economy. Extreme precipitation over this region can cause floods and landslides occurrences or lack of precipitation that can affect many sectors of economy. The objective of this work is to identify atmospheric characteristics associated with austral summer extreme precipitation over part of Southeastern Brazil. The atmospheric characteristics obtained from wet and dry composites suggest that extreme precipitation was associated with anomalous circulation over the region, forced by a PSA‐like wavetrain intensified by the Southern Annular Mode. Copyright © 2010 Royal Meteorological Society