青藏高原对亚洲夏季风爆发位置及强度的影响被引量：37

EFFECT OF TIBETAN PLATEAU ON THE SITE OF ONSET AND INTENSITY OF THE ASIAN SUMMER MONSOON

下载PDF

导出

摘要通过数值模拟,研究了青藏高原位于不同经度位置时,亚洲夏季风的爆发和演变情况,从动力和热力学角度分析了青藏高原大地形对亚洲夏季风爆发位置的影响。结果表明,青藏高原的“热力滑轮”作用引起:高原东南面热带陆地上空的偏南气流加强,降水增加,凝结潜热加强;高原西南面热带陆地上空出现偏北气流,降水减弱,陆面的感热加热加强。青藏高原对于亚洲夏季风的爆发地点有锚定的作用,在热带海陆分布的背景下,使亚洲夏季风首先在高原东南面的海洋东岸—陆地西岸爆发,并使亚洲季风降水重新分布。 Based on experiments in different longitudes of the Tibetan Plateau, it is found that the Tibetan Plateau makes a heat pulley function on its surrounding areas in late spring and summer. The function always enhances southerlies and brings heavy rainfall and more latent heating over tropical land to southeast of the Tibet, prevail northerlies, less rainfall and more sensible heating over tropical land to southwest of the Tibet. Therefore, the onset of Asian summer monsoon often takes place on the eastern shore of sea lies to the south of the Tibetan Plateau. These show that the Tibetan Plateau anchor the onset site of Asian summer monsoon. Results also show that the existence of Tibetan Plateau modulates the Asian monsoon, and make the Asian summer rainfall to redistribute.

作者梁潇云刘屹岷吴国雄

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《气象学报》 CAS CSCD 北大核心 2005年第5期799-805,共7页 Acta Meteorologica Sinica

基金资助课题:中国科学院创新团队国际合作伙伴计划"气候系统模式研发及应用研究" 国家自然科学基金项目(40475027 40135020 40221503和40375022)

关键词青藏高原亚洲夏季风爆发位置强度变化 “热力滑轮”作用空间分布 Tibetan Plateau, Asian summer monsoon, Site of onset, Heat pulley

分类号 P425.42 [天文地球—大气科学及气象学]

引文网络
相关文献

参考文献19

1Murakami T, Ding Y H. Wind and temperature changes over Eurasia during the early summer of 1979. J Meteor Soc Japan,1982, 60:183- 196
2Luo Huibang, Yanai M. The large-scale circulation and heat sources over the Tibetan Plateau and surrounding areas during the early summer of 1979 Part Ⅱ: Heat and moisture budgets.Mon Wea Rev, 1984, 112:966 - 989
3Luo Huibang, Yanai M. The large-scale circulation and heat sources over the Tibetan Plateau and surrounding areas during the early summer of 1979 Part Ⅰ: Precipitation and kinematic analyses. Mon Wes Rev, 1983, 111:922-944
4He Haiyan, McGinnis J W, Song Zhengshan, et al. Onset of the Asian summer monsoon in 1979 and the effect of the Tibetan Plateau. Mon Wea Rev, 1987, 115:1966- 1994
5Webster P J. The elementary monsoon. In: Fein J S, Stephens P L. Eds. Monsoons. John Wiley, New York, NY, 1987. 3- 32
6Johnson D R, Yanai M, Schoak T K. Global and regional distributions of atmospheric heat sources and sinks during the GWE.In: Chang C P, Krishnamurti T N, eds. Monsoon Meteorology. Oxford: Oxford University Press, 1987. 271-297
7Ye Duzheng, Tao Shiyang, Li Maicun. The abrupt change of circulation over the northern hemisphere during June and October. The Atmosphere and the Sea in Motion, 1959. 249 -267
8Matsumoto J. The seasonal changes in Asian and Australia nmonsoon regions. J Meteor Soc Japan, 1992, 70: 257-273
9Murakami T, Matsumoto J. Summer monsoon over the Asian continent and western north Pacific. J Meteor Soc Japan, 1994,72:719 - 745
10Krishnamurti T N, Jayakaumar P K, Sheng J, et al. Divergent circulation on the 30 to 50 day time scale. J Atmos Sci, 1985,42: 364 - 375