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Impact of atmospheric blocking on South America in Austral Summer

Abstract:

In this study, we investigate atmospheric blocking over east South America in austral summer for the period of 1979-2014. Our results show that blocking over this area is a consequence of propagating Rossby waves that grow to large amplitudes and eventually break anticyclonically over subtropical South America (SSA). The SSA blocking can prevent the establishment of the South Atlantic Convergence Zone (SACZ). As such, years with more blocking days coincide with years with fewer SACZ days and ...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1175/JCLI-D-16-0493.1

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atmos Ocean & Planet Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atmos Ocean & Planet Physics
Role:
Author
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Name:
CNPq Conselho Nacional de Desenvolvimento Cientifico e Tecnologico
Grant:
232480/2014-1
Publisher:
American Meteorological Society
Journal:
Journal of Climate More from this journal
Volume:
30
Issue:
5
Pages:
1821-1837
Publication date:
2017-02-20
Acceptance date:
2016-11-26
DOI:
EISSN:
1520-0442
ISSN:
0894-8755
Pubs id:
pubs:664279
UUID:
uuid:fac5d9cc-b404-4b7f-8274-c45106097e38
Local pid:
pubs:664279
Source identifiers:
664279
Deposit date:
2016-12-06

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