Summary of Abstract Submission

Abstract Submission No. IO50-10-0011PresentationPoster

SEASONAL OCCURRENCE OF PHYTOPLANKTON BLOOMS ALONG THE EAST COAST OF INDIA

T Preethi Latha*1, P V Nagamani1, K Hanumantha Rao1, Joaquim I Goes2, S B Choudhury1, E Amminedu3, C B S Dutt1, V K Dadhwal1

1 National Remote Sensing Center, ISRO, India
2 Lamont Doherty Earth Observatory, Columbia University, New York, USA
3 College of Engineering, Andhra University, Visakhapatnam, India

ABSTRACT :

This study describes the seasonal occurrence of phytoplankton blooms along the East coast of India with special emphasis on a bloom observable every year during the month of February in the southwestern Bay of Bengal. 8 day composite maps of chlorophyll a from OCM-2 and MODIS-A for the years 2011 to 2014 are utilized to describe the evolution of this bloom which typically results in a ~ 1.5 to 2 mg/m3 increase in chlorophyll in the normally unproductive waters of the Bay of Bengal. Physical processes associated with the formation of the bloom are investigated using Sea Surface Temperature (SST) from the MODIS-A and Sea Surface Salinity (SSS) from the Aquarius. Our results reveal that this bloom feature is associated with low SST and a decrease of SSS by ~ 0.5 psu. A better understanding of these blooms along the coast will ensure better fish-stock management.