Arabian Sea is a region of active air-sea interaction processes and plays a major role on driving monsoon system over the Indian subcontinent. Two important issues about the Arabian Sea have to be noted. (1) The annual evolution of the near-surface layer thermal structure undergoes a unique semiannual cycle and (2) the central Arabian Sea is a region of net heat gain across the air-sea interface over a year. It is thus of interest to determine how the heat is transported and ultimately removed from the region. To address this problem, a model based diagnostic study of the upper ocean thermal...