春季亚洲地面湿度异常对月、季气候影响的模拟研究  

The Impact of the Ground Wetness Anomalies in Spring on the Climate of Following Months

作　　者：游性恬[1] 熊廷南[1] T.Yasunari H.L.Tanaka 

机构地区：[1]北京气象学院,北京100081 [2]筑波大学地球科学系

出　　处：《大气科学》2000年第5期660-668,共9页Chinese Journal of Atmospheric Sciences

摘　　要：通过大气环流模式试验，研究了春季亚洲中纬带地面湿度异常对其后４个月月平 均气候参数的影响。结果发现：正的地面湿度异常对其后气候参数的影响在第１个月最弱， 第３个月最强；它导致欧亚中高纬带在第２～４个月对流层内的高度和温度都降低，低值系 统发展，副热带高压亦发展，中纬度西风急流相应增强；同时北美东岸有明显的遥相关响 应。The impact of anomalous ground wetness (GW) in spring over Asian mid-latitudes on the monthly climatic parameters in the following four months is investigated with a GCM experiment. The main results are summarized as follows: the effect of positive GW anomalies on the monthly climatic parameters is the weakest for the first following month and the strongest for the third following months; the positive anomalous GW leads to decreases of both height and temperature in the whole troposphere over most mid-high latitudes of Asia for all following four months, to developments of both the depressions in mid-high latitudes and the subtropical high, and thus to intensification of the westerly jet; and some evidences of teleconnection remarkably appear in the atmospheric circulation over the east coast of North America.

关 键 词：地面温度 模拟研究 气候参数 雪盖 亚洲 春季 

分 类 号：P461.6[天文地球—大气科学及气象学]