A quantitative method for describing the seasonal cycles of surface chlorophyll in the Indian Ocean

Details A quantitative method for describing the seasonal cycles of surface chlorophyll in the Indian Ocean A quantitative method for describing the seasonal cycles of surface chlorophyll in the Indian Ocean

Nov 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spie.6406e..28l&link_type=abstract

Remote Sensing of the Marine Environment. Edited by Frouin, Robert J.; Agarwal, Vijay K.; Kawamura, Hiroshi; Nayak, Shailesh; P

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Scientific paper

The seasonal cycles of surface chlorophyll (SCHL) in the Indian Ocean (IO) are regionally described by means of 6 parameters: the timing of the bloom onset and of the bloom peak, and the integrated SCHL value in between these two extrema for both winter and summer blooms. This description, based on a climatology constructed from 7 years of SeaWiFS data, provides a regional image of the influence of the two monsoons on phytoplankton blooms. Over a large part of the basin, the seasonal cycle is characterized by two distinct growth periods, one in summer during the South West Monsoon (SWM), the other in winter during the North East Monsoon (NEM). However, in some specific areas such as the southwestern coast of India, there is no maxima during the NEM. The bloom areas during the SWM and the NEM show totally different regional patterns. Important lags in the timing of the blooms are identified, and are also associated with distinct regional patterns. The next step in the understanding of the SCHL seasonal cycles in the IO will be to relate the regional patterns of the timing and amplitude of the blooms with those of the physics of the IO.

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