Seasonal SST patterns along the West India shelf inferred from AVHRR

Alvarinho J. Luis; Hiroshi Kawamura

doi:10.1016/S0034-4257(03)00101-9

Seasonal SST patterns along the West India shelf inferred from AVHRR

Alvarinho J. Luis, Hiroshi Kawamura

SCI - Center for Atmospheric and Oceanic Studies

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

Sea surface temperature (SST) patterns along the west India shelf, extending from 8° to 24°N, are analyzed during 1993-1996 to characterize seasonal variability using the advanced very high-resolution radiometer (AVHRR) SST, momentum and heat fluxes derived from ERS-1 winds and NCEP/NCAR reanalysis data. During winter monsoon (December-March), a 4-year mean SST spatial pattern shows a strong cooling north of 15°N due to surface heat depletion, while warm SSTs evolve in the south due to the intrusion of warm equatorial water. Cold water occupies the entire shelf during summer monsoon, with high degree of SST cooling dominating the Kerala coast, where Ekman pumping and upwelling promoted by the dominant alongshore wind stress component overwhelms the surface heat loss. The spectral analysis reveals semiannual and annual peaks in SST and forcing functions, which highlight the influence of monsoon forcing on the SST variability along the west India shelf.

Original language	English
Pages (from-to)	206-215
Number of pages	10
Journal	Remote Sensing of Environment
Volume	86
Issue number	2
DOIs	https://doi.org/10.1016/S0034-4257(03)00101-9
Publication status	Published - 2003 Jul 30

Keywords

AVHRR
Heat flux
Local forcing
Monsoons
SST cooling
Upwelling

ASJC Scopus subject areas

Soil Science
Geology
Computers in Earth Sciences

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10.1016/S0034-4257(03)00101-9

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title = "Seasonal SST patterns along the West India shelf inferred from AVHRR",

abstract = "Sea surface temperature (SST) patterns along the west India shelf, extending from 8° to 24°N, are analyzed during 1993-1996 to characterize seasonal variability using the advanced very high-resolution radiometer (AVHRR) SST, momentum and heat fluxes derived from ERS-1 winds and NCEP/NCAR reanalysis data. During winter monsoon (December-March), a 4-year mean SST spatial pattern shows a strong cooling north of 15°N due to surface heat depletion, while warm SSTs evolve in the south due to the intrusion of warm equatorial water. Cold water occupies the entire shelf during summer monsoon, with high degree of SST cooling dominating the Kerala coast, where Ekman pumping and upwelling promoted by the dominant alongshore wind stress component overwhelms the surface heat loss. The spectral analysis reveals semiannual and annual peaks in SST and forcing functions, which highlight the influence of monsoon forcing on the SST variability along the west India shelf.",

keywords = "AVHRR, Heat flux, Local forcing, Monsoons, SST cooling, Upwelling",

author = "Luis, {Alvarinho J.} and Hiroshi Kawamura",

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T1 - Seasonal SST patterns along the West India shelf inferred from AVHRR

AU - Luis, Alvarinho J.

AU - Kawamura, Hiroshi

PY - 2003/7/30

Y1 - 2003/7/30

N2 - Sea surface temperature (SST) patterns along the west India shelf, extending from 8° to 24°N, are analyzed during 1993-1996 to characterize seasonal variability using the advanced very high-resolution radiometer (AVHRR) SST, momentum and heat fluxes derived from ERS-1 winds and NCEP/NCAR reanalysis data. During winter monsoon (December-March), a 4-year mean SST spatial pattern shows a strong cooling north of 15°N due to surface heat depletion, while warm SSTs evolve in the south due to the intrusion of warm equatorial water. Cold water occupies the entire shelf during summer monsoon, with high degree of SST cooling dominating the Kerala coast, where Ekman pumping and upwelling promoted by the dominant alongshore wind stress component overwhelms the surface heat loss. The spectral analysis reveals semiannual and annual peaks in SST and forcing functions, which highlight the influence of monsoon forcing on the SST variability along the west India shelf.

AB - Sea surface temperature (SST) patterns along the west India shelf, extending from 8° to 24°N, are analyzed during 1993-1996 to characterize seasonal variability using the advanced very high-resolution radiometer (AVHRR) SST, momentum and heat fluxes derived from ERS-1 winds and NCEP/NCAR reanalysis data. During winter monsoon (December-March), a 4-year mean SST spatial pattern shows a strong cooling north of 15°N due to surface heat depletion, while warm SSTs evolve in the south due to the intrusion of warm equatorial water. Cold water occupies the entire shelf during summer monsoon, with high degree of SST cooling dominating the Kerala coast, where Ekman pumping and upwelling promoted by the dominant alongshore wind stress component overwhelms the surface heat loss. The spectral analysis reveals semiannual and annual peaks in SST and forcing functions, which highlight the influence of monsoon forcing on the SST variability along the west India shelf.

KW - AVHRR

KW - Heat flux

KW - Local forcing

KW - Monsoons

KW - SST cooling

KW - Upwelling

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U2 - 10.1016/S0034-4257(03)00101-9

DO - 10.1016/S0034-4257(03)00101-9

M3 - Article

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SN - 0034-4257

VL - 86

SP - 206

EP - 215

JO - Remote Sensing of Environment

JF - Remote Sensing of Environment

IS - 2

ER -

Seasonal SST patterns along the West India shelf inferred from AVHRR

Abstract

Keywords

ASJC Scopus subject areas

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