Variability of Arabian Sea surface circulation and chlorophyll distribution: a remote sensing estimation

Abstract High resolution mean surface velocity field of the Arabian Sea was derived by combining sea level anomalies based on satellite altimetry data with drifter data. The current exhibits western boundary Somali Current, weak westward North Equatorial West Indian Coastal Current. Besides strong currents, mesoscale eddy activity in side. seasonal circulation changes and variability associated Ocean Dipole (IOD) events were determined. Current is northward during summer, a speed above 1.8 m/s July it reverses towards south winter. Significant found flow pattern IOD events. An anticyclonic gyre near equator conspicuous feature positive IOD. Further, Great Whirl shows an earlier formation dissipation Notably, delay southward reversal summer monsoon much stronger fall prominent negative eastward Jet absent instead opposite (westward) prevails Enhanced Chl-a concentration occurs IOD, compared to especially Sea. wind-driven upwelling eddies are significantly modifying distribution along Coast.