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Interannual variability of the South Pacific Convergence Zone and implications for tropical cyclone genesis

DRS at CSIR-National Institute of Oceanography

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Title Interannual variability of the South Pacific Convergence Zone and implications for tropical cyclone genesis
 
Creator Vincent, E.M.
Lengaigne, M.
Menkes, C.E.
Jourdain, N.C.
Marchesiello, P.
Madec, G.
 
Subject Interannual variability
Tropical cyclone
convergence zones
El Nino phenomena
Hurricanes
 
Description The interannual variability of the South Pacific Convergence Zone (SPCZ) and its influence on tropical cyclone (TC) genesis in the South Pacific are investigated using observations and ERA40 reanalysis over the 1979– 2002 period. In austral summer, the SPCZ displays four typical structures at interannual timescales. The first three are characterized by a diagonal orientation of the SPCZ and account for 85% of the summer seasons. One is close to climatology and the other two exhibit a 3 degree northward or southward departure from the SPCZ climatological position. In contrast, the fourth one, that only encompasses three austral summer seasons (the extreme 1982/1983 and 1997/1998 El Nino events and the moderate 1991/1992 El Nino event), displays very peculiar behaviour where the SPCZ largely departs from its climatological position and is zonally oriented
 
Date 2011-08-23T09:37:17Z
2011-08-23T09:37:17Z
2011
 
Type Journal Article
 
Identifier Climate Dynamics, vol.36; 2011; 1881-1896
http://drs.nio.org/drs/handle/2264/3904
 
Language en
 
Rights An edited version of this paper was published by Springer. This paper is for R & D purpose and Copyright [2011] Springer.
 
Publisher Springer