沙漠与绿洲气象2018，Vol.12Issue(2)：1-6,6.DOI:10.12057/j.issn.1002-0799.2018.02.001
青藏高原夏季地面感热通量与高原低涡生成的可能联系
Temporal-Spatial Distribution of Surface Sensible Heat Flux over the Tibetan Plateau in Summer and Its Possible Correlation with the Formation of Tibetan Plateau Vortex
摘要
Abstract
In this paper,reanalysis surface sensible heat flux(SHF)grid dataset on the Tibetan Plateau(TP)of NCEP/NCAR and Tibetan Plateau Vortex(TPV)dataset recognized from MICAPS weather maps are used to analyze the spatial distribution of the linear trend during 1981-2010. Meanwhile,the analysis on possible correlation,especially spatial correlation,between summer surface SHF and formation frequency of TPV was conducted. The results show that the spatial distribution of linear trend had the regional differences,the decreasing trend of SHF is wide and the negative center is obvious,the increasing trend of the SHF is mainly distributed in the northwest and east of the TP. Furthermore,it is noted that a strong positive correlation exists between the summer surface SHF of TP and the synchronous TPV formation frequency;in years with strong surface SHF,the lower level in the east of TP is controlled by cyclonic circulation with divergence systems aloft the corresponding area,which contributes to the strong updrafts over the TP;and contrary situation arises in weak surface SHF years. One of the primary conclusions is that there exists discernible spatial correlation between sensible heating intensity of surface and the formation frequency of TPV.关键词
青藏高原/地面感热/高原低涡/空间相关Key words
Tibetan Plateau/surface sensible heat/Tibetan Plateau vortex/spatial correlation分类
天文与地球科学引用本文复制引用
张恬月,李国平..青藏高原夏季地面感热通量与高原低涡生成的可能联系[J].沙漠与绿洲气象,2018,12(2):1-6,6.基金项目
公益性行业(气象)科研专项(GYHY201206042),国家自然科学基金(91337215,41675057),共同资助. （气象）
