The interaction between winter monsoon activities in East Asia and sea surface temperature variations over the western Pacific Ocean

First, the relationship between diabatic heating term and horizontal or vertical advection term at the lowest layer (1000-850 mb) is investigated by applying the empirical orthogonal function (EOF) analysis on heat budget components over the western Pacific Ocean. Second, the atmospheric response and forcing power on the SST anomaly are discussed based on the composite analysis of SST, outgoing longwave radiation and horizontal motion associated with the strength of winter monsoon. It is suggested that the strength of East Asian winter monsoon is partly controlled by the Matsuno-Gill type response model in which the strong convection over maritime continent acts as a heat source. -English summary