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利用实测晴空射出长波辐射和海表温度研究了1985年前期冷拉尼娜到1987年晚期厄尔尼诺期间热带温室效应的变化情况。尽管从冷到暖的状态变化中,逐月资料的比较可能得出温室罩作用在减弱,但从4年的观测记录整体考虑,热带平均温室罩有2W/m2的明显增加,同时热带平均海表温度增温0.4K。将这种实际观测到的增加与GCM模拟的ENSO期间晴空温室效应的变化进行了比较。在ENSO期间,很明显与SST的重新分布有关的动力变化叠加在SST驱动的温室罩变化之上。若能保证GCM具有预测温室罩动力和热力变化的能力,那么,GCM模拟也能成功地再现这种特征。
The changes of the tropical greenhouse effect from the cold La Nina in early 1985 to El Niño in late 1987 were studied using the measured longwave radiation and sea surface temperature. Although monthly comparisons of monthly data may lead to a weakening of the greenhouse cover from a cold-to-warm state, the tropical mean greenhouse cover has been significantly increased by 2W / m2 from a 4-year observation record, with a mean tropical tropic Table temperature warming 0.4K. This actually observed increase is compared with the changes in the clear-air greenhouse effect during the GCM-simulated ENSO. During the ENSO period, it is clear that the dynamic changes associated with the redistribution of SST are superimposed on the SST-driven changes in greenhouse cover. GCM simulation can successfully reproduce this feature if GCM is to be able to predict the thermal and thermal variations of the greenhouse.