@article {Jayakumar:2012:0149-0419:246, title = "Study the Mechanism of Surface Chlorophylla Variability in the Southern Tropical Indian Ocean Using an OGCM", journal = "Marine Geodesy", parent_itemid = "infobike://tandf/umgd", publishercode ="tandf", year = "2012", volume = "35", number = "3", publication date ="2012-07-01T00:00:00", pages = "246-256", itemtype = "ARTICLE", issn = "0149-0419", eissn = "1521-060X", url = "https://www.ingentaconnect.com/content/tandf/umgd/2012/00000035/00000003/art00003", doi = "doi:10.1080/01490419.2011.637874", keyword = "surface chlorophyll concentration, Ekman transport, Rossby waves, Ocean General Circulation Model", author = "Jayakumar, Aravindakshan and Gnanaseelan, Chellappan", abstract = "Eleven years (19972007) of SeaWiFS observations and Ocean General Circulation Model sensitivity experiments are used to understand chlorophylla variability in the southern tropical Indian Ocean. The strong offshore Ekman transport forced by anomalous southeasterly winds are responsible for inducing higher chlorophyll-a in the eastern equatorial Indian Ocean. In the case of the southwest tropical Indian Ocean, Rossby waves and local upwelling are responsible for lifting the phytoplankton from deep chlorophyll maxima to the surface. Both intraseasonal dynamical response and interannual forcing are responsible for the phytoplankton blooming in the western basin, whereas the interannual forcing is mainly responsible in the east.", }