作　　者： ;

机构地区： 中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室

出　　处： 《第四纪研究》 2004年第1期1-9,T001-T004,共13页

摘　　要： 文章回顾了我国在青藏高原气象学的基础上发展起来的青藏高原气候动力学研究的近期进展 ;指出了青藏高原“感热驱动气泵 (SHAP)”在调制东亚季风及全球气候中的重要作用 ;在强调全球海陆分布所产生的“四叶型”加热LOSECOD激发出夏季副热带基本环流型的基础上指出高原的隆升增强了东亚季风的北伸 ;论述与青藏高原抬升相联系的高原负涡度源所激发的Rossby波对全球气候异常的影响 ,指出春季青藏高原的表面感热加热是造成东亚环流季节突变的重要原因 ,并导致亚洲夏季风首先在孟加拉湾东部地区爆发 ; In this paper the study of the Qinghai Xizang Plateau climate dynamics that was developed based upon the Qinghai Xizang Plateau meteorology is reviewed. The importance of the “Sensible Heat driven Air Pump (SHAP)” over the Qinghai Xizang Plateau in regulating the East Asian monsoons and global climate is emphasized. It is shown that although the basic circulation pattern in the summer subtropics is forced by the so called LOSECOD heating quadruplet that is associated with the land sea distribution, the uplifting of the Qinghai Xizang Plateau did intensify the East Asian monsoons particularly in middle latitudes. The uplifted Qinghai Xizang Plateau in summer not only acts as a huge heat source for atmospheric motions, but also becomes a huge negative vorticity source of the atmosphere that can excite the Rossby wave rays, affecting the global climate anomalies. The strong sensible heating over the Qinghai Xizang Plateau in spring also contributes significantly to the abrupt seasonal transition of the East Asian circulation, resulting in the earliest Asian monsoon onset anchored over the eastern Bay of Bengal. Finally, the further development of the Qinghai Xizang Plateau climate dynamics is explored as well.

关 键 词： 气候动力学 感热驱动气泵 负涡度源南亚高压双模态 环流季节突变 季风爆发

领　　域： [天文地球]