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Title: Recent sea surface temperature variability in the coastal regions of the north Indian Ocean
Authors: Singh, O. P.
Sarker, Majajul Alam
Keywords: Sea surface temperature (SST);interannual mode;quasi biennial oscillation (QBO);El Nino/ Southern Oscillation (ENSO)
Issue Date: Mar-2003
Publisher: CSIR
Abstract: The coastal region of the Indian Ocean is more vulnerable to the impacts of climate change. In the present paper an attempt has been made to estimate the recent SST ( sea surface temperature ) trends in the coastal zones of the northern Indian Ocean. For this purpose the satellite derived grid point SST data for the period 1985-1998 has been utilized. The SST has shown consistent increasing trends in all the seasons in the coastal belts of Pakistan and the northwestern India upto Bombay (Mumbai). In the coastal regions of the islands the increasing trend is confined to the summer only. During the winter season the SSTs in the island regions have registered decreasing trends. This is indicative of an extension of the continental influence towards the island regions. It has been found that the interannual mode of SST variation dominates the linear SST trends which is characterised by the Quasi Biennial Oscillations (QBO) and the El Nino/ Southern Oscillation (ENSO) scale cycle. QBO having a periodicity of approximately two years and ENSO having a periodicity of about three to seven years are dominant oscillations of the tropical region. The results of the study can provide useful projections of the future scenario of SST trends and the associated impacts in South Asia.
Page(s): 7-13
ISSN: 0379-5136
Appears in Collections:IJMS Vol.32(1) [March 2003]

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