From the point view at the role of the apparent heat source over the area of Tibetan Plateau and which connected with Tianshan Mountain, the relationship between the heat source over the area of Tibetan Plateau and which connected with Tianshan Mountain and the atmospheric water cycle, as well as the cloud-water resource in the Tianshan Mountain regions were investigated, using the satellite data, the monthly National Centers for Atmospheric Prediction and the National Center for Atmospheric Research (NCEP/NCAR) reanalysis with a resolutions of 2.5°×2.5° and 1°×1°, respectively, together with the Climatic Research Unit (CRU)precipitation data, in order to achieve the investigation on the changes of atmospheric water cycle structure in Tianshan Mountain regions in terms of diagnosis on column water vapor, moisture transport, the correlated vector and the apparent heat source. The spatial-temporal distribution of the summer half year rainfall and its variation was also analyzed. The results show that: The large parts of precipitation and column water vapor over region of Tianshan Mountain are concentrated over its west part. The analysis on the vertical structure of apparent heat source and sink of water vapor also revealed that the rich cloud-water resource is well consistent with the apparent heat source over Tibetan Plateau fishtail type topography. We further analyzed the integrate image of the long distant moisture source, which formed the rich cloud-water resources over the area of Tibetan Plateau and which connected with Tianshan Mountain using the methods correlated vector analysis between the apparent heat source over this region and the column water vapor transport. The results indicated that the atmospheric moisture is mainly come from the South Atlantic Ocean, the Bay of Bengal and the Arabian Sea and the northern Arctic Ocean. A 12-year cycle is obvious for the water vapor, precipitation, and the apparent heat source over "fishtail" type topography. From the 1950s to nowadays, the cycle of apparent heat source over "fishtail" type topography is ahead of 3~4 years compared to the changes of column water vapor. However, the column water vapor changes appeared in advance 3~4 years in contrast to the precipitation over this region, and after that, with an advance in 1~2 years. The interannual variation of cloud-water resources represented, to some extent, the response mechanism of the regional atmospheric moisture cycle structure to the apparent heat source over fishtail type topography.
GUO Yudi
,
XU Xiangde
,
CHEN Weimin
,
WEI Fengying
,
CHEN Aijun
. Heat Source over ‘Fishtail’ Type Topography Effects on Tianshan Mountain Regions Precipitation Systems and Water Resources[J]. Plateau Meteorology, 2014
, 33(5)
: 1363
-1373
.
DOI: 10.7522/j.issn.1000-0534.2013.00120
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