Impact of biannual rossby waves on the Indian Ocean Dipole


Autoria(s): GNANASEELAN, C.; VAID, B. H.; POLITO, P. S.
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

20/10/2012

20/10/2012

2008

Resumo

Topex/Poseidon sea surface height anomalies during 1993-2002 are decomposed using 2-D finite impulse response filters which showed biannual Rossby waves (BRWs) in the equatorial Indian Ocean (peak at 1.5 degrees S) and in the southern tropical Indian Ocean (peak at 10.5 degrees S) during Indian Ocean Dipole (IOD) years. Anomalous downwelling BRWs in the equatorial Indian Ocean triggered by the wind stress curl-induced Ekman pumping near the eastern boundary started propagating westward from the eastern boundary in July/August 1993 and 1996, i.e., more than one year prior to the formation of the IOD events of 1994 and 1997 respectively. These strong downwelling signals reach the western equatorial Indian Ocean during the peak dipole time.

Identificador

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS, v.5, n.3, p.427-429, 2008

1545-598X

http://producao.usp.br/handle/BDPI/32046

10.1109/LGRS.2008.919505

http://dx.doi.org/10.1109/LGRS.2008.919505

Idioma(s)

eng

Publicador

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

Relação

Ieee Geoscience and Remote Sensing Letters

Direitos

restrictedAccess

Copyright IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

Palavras-Chave #finite impulse response (FIR) digital filters #image analysis #open waveguides #optical waveguide filters #radar #radar altimetry #radar imaging #remote sensing #satellite applications #waves #VARIABILITY #TOPEX/POSEIDON #MODE #Geochemistry & Geophysics #Engineering, Electrical & Electronic #Remote Sensing
Tipo

article

original article

publishedVersion