Linkage between winter air temperature over the subtropical Western Pacific and the ice extent anomaly in the Sea of Okhotsk

摘要: This study deals with the correlation between ice extent in Sea of Okhotsk and interannual variability winter (December–February) air temperature over subtropical Western Pacific from 1979 to 2008. The analysis indicates that increase sea coincides not only cooling adjacent area, but also significant warming extends surface middle troposphere. meridional dipole pattern tropospheric anomalies (cooling high latitudes low latitudes) primarily results dynamical processes driven by large-scale atmospheric circulation change. A heat budget diagnosis reveals when increases one standard deviation, rises about 0.25°C. It suggests adiabatic heating stationary eddy flux convergence may be most important factors, which account for 30 15% warming, respectively. In addition, these two factors coordinate result regions.