Impact of biannual rossby waves on the Indian Ocean Dipole
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
20/10/2012
20/10/2012
2008
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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 |
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 |