Why Are Arctic Sea Ice Concentration in September and Its Interannual Variability Well Predicted over the Barents–East Siberian Seas by CFSv2?

To further understand the prediction skill for the interannual variability of the sea ice concentration(SIC) in specific regions of the Arctic, this paper evaluates the NCEP Climate Forecast System version 2(CFSv2), in predicting the autumn SIC and its interannual variability over the Barents–East Siberian Seas(BES). It is found that CFSv2 presents much better prediction skill for the September SIC over BES than the Arctic as a whole at 1–6-month leads, and high prediction skill for the interann...