文档介绍：
近千年青藏高原表面加热变化及其与东亚
夏季风关系的模拟分析#
况雪源*
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(南京大学大气科学学院)
摘要:依据全球海气耦合气候模式 ECHO-G 近千年积分模拟结果,分析青藏高原表面加热
的季节特征,探讨其与东亚夏季风的关系。结果表明模式较好地模拟了青藏高原冬季为冷源、
夏季为热源的季节加热特征。感热加热与地表气温在冬季为负相关,夏季为正相关。而潜热
与降水无论在年际、年代际等时间尺度上都呈现明显的正相关,意味着青藏高原上空的潜热
基本通过降水凝结释放了出来。分析表明青藏高原夏季感热加热对东亚夏季风强度指数呈显
著负相关,青藏高原夏季感热强对应弱夏季风,长江流域降水的增多,而潜热加热的作用相
反。在年代际以上时间尺度,冬季高原加热强的时段,东亚夏季风弱;反之亦然
关键词:青藏高原;表面加热;东亚夏季风;模拟分析
中图分类号:P4
Modelling study on variation of surface heating in Tibetan
Plateau and its relation with East Asian summer monsoon in
last millennium
Kuang Xueyuan
(School of Atmospheric Sciences, Nanjing University)
Abstract: Based on the global coupled atmosphere-ocean climate model ECHO-G simulation
results in recent 1000 years, the characteristics of surface heating in Tibetan Plateau and its
relationship with the East Asian summer monsoon are studied. The results show that models
essfully reproduce the feature of Tibetan Plateau of cold source in winter and warm source in
summer. The sensible heat and surface temperature in winter is negatively correlated but
positively correlated in summer. On the other hand, the latent heat and precipitation are positively
associated both in inter-annual and interdecadal time scales, implying that latent heat over the
Tibetan Plateau basic released by precipitation. Correlation analysis shows that the sensible heat
of Tibetan Plate