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Physical and biological response of the Arabian sea to tropical cyclone Phyan and its implications

DRS at CSIR-National Institute of Oceanography

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Title Physical and biological response of the Arabian sea to tropical cyclone Phyan and its implications
 
Creator Byju, P.
PrasannaKumar, S.
 
Subject Arabian Sea
Sea surface temperature
Ekman pumping
Wind-mixing
Chlorophyll
Primary production
CO2 out-gassing
Biogeochemical cycle
Nutrients
 
Description The response to the tropical cyclone Phyan, which developed in the eastern Arabian Sea during 9–11 November 2009, was rapid cooling of sea surface temperature (SST), enhancement of chlorophyll a and two-fold increase in net primary productivity (NPP). Cooling of SST was immediate in response to the strong wind-mixing, and the subsequent upward Ekman pumping sustained the cooling even after the dissipation of Phyan. The biological response mediated by the upward Ekman pumping driven vertical transport of subsurface nutrient showed a time lag of 3–4 days. The CO sub (2) flux to the atmosphere associated with Phyan was 0.123 Tg C, which accounted for approx. 85% of the total out-gassing from the eastern Arabian Sea during November. Thus, an increased occurrence of cyclones in a warming environment will lead to an enhanced biomass production and also increase in CO sub (2) out-gassing
 
Date 2011-07-07T10:20:51Z
2011-07-07T10:20:51Z
2011
 
Type Journal Article
 
Identifier Marine Environmental Research, vol.71(5); 2011; 325-330p.
no
http://drs.nio.org/drs/handle/2264/3874
 
Language en
 
Relation Mar_Environ_Res_71_325.jpg
 
Rights An edited version of this paper was published by Elsevier. Copyright [2011] Elsevier
 
Publisher Elsevier