A case study of the westward transport of Chorophyll-a entrained by ocean eddies during a tropical cyclone

During the passage of tropical cyclone (TC) ARB O1, a westward transport Chlorophyll-a (Chl-a) enhancement was identified south Indian Peninsula. The features and underlying dynamics were investigated with high-resolution satellite remote sensing, reanalysis, Argo buoy data. From January 12 to 19, 2006, phytoplankton bloom propagated two ocean anticyclonic eddies, which enhanced after TC. surface average maximum Chl-a concentration an inertia period approximately 4–5 days occurred in four boxes. on 16 (21) 0.4 mg•m−3 (0.53 mg•m−3) Box B, caused by cyclonic eddy Ekman pumping triggered TC (horizontal current transport). However, 0.32 D, After TC, mixing layer deepened, upper stratification weakened, promoted uplift from deeper layer. In addition horizontal transport, produced under joint influence entrainment This study can aid assessing biological responses future typhoons.