论文部分内容阅读
Radiative fluxes are of primary importance in the energy and mass balance of the sea-ice cover. Various parameterizations of the radia- tive fluxes are studied in a thermodynamic sea-ice model. Model outputs of the surface radiative and heat fluxes and mass balance are compared with observations. The contribution of short-wave radiation is limited to a long part of winter. Therefore, simple schemes are often sufficient. Errors in estimations of the short-wave radiation are due mainly to cloud effects and occasionally to multi-reflection between surface and ice crystals in the air. The long-wave radiation plays an important role in the ice surface heat and mass balance during most part of a winter. The effect of clouds on the accuracy of the simple radiative schemes is critical, which needs further atten- tion. In general, the accuracy of an ice model depends on that of the radiative fluxes.
Radiative fluxes are of primary importance in the energy and mass balance of the sea-ice cover. Various parameterizations of the radia- tive fluxes are studied in a thermodynamic sea-ice model. Model outputs of the surface radiative and heat fluxes and mass balance are Compared with observations. The contribution of short-wave radiation is limited to a long part of winter. Errors in estimations of the short-wave radiation are due mainly to cloud effects and occasionally to multi-reflection between surface and ice crystals in the air. The long-wave radiation plays an important role in the ice surface heat and mass balance during most part of a winter. The effect of clouds on the accuracy of the simple radiative schemes is critical, which needs further atten- tion. In general, the accuracy of an ice model depends on that of the radiative fluxes.