Abstract
Abstract A 40-yr integration is conducted using the National Center for Atmospheric Research (NCAR) Community Climate Model Version 2 (CCM2). The simulation was forced by observed monthly global sea surface temperature (SST) changes during 1950–89. The January climates of the model results are presented in the paper. The modeled means and interannual variability are analyzed and compared with observations based on different accounts. Firm, the authors concentrate on the period of 1951–79. The monthly varying SSTs of this period were used to construct the SST climatology for an earlier 20-yr simulation conducted by NCAR researchers. The difference of the model climatology between the two simulations, respectively, forced by monthly varying SST and annually repeating SST, is examined. The modeled mean fields do not significantly differ between the two simulations especially for the Northern Hemisphere. The magnitude of interannual variability is enhanced in the current simulation especially for the northern...
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