【摘 要】
：
To better understand vertical air mass exchange driven by local circulation in the Himalayas, the volume flux of air mass is estimated in the Rongbuk Valley on
【机 构】
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State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Ti
【基金项目】
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The HEST2006 campaign and this study were financed by the Ministry of Science and Technology of the People’s Republic of China;the Chinese Academy of Sciences
论文部分内容阅读
To better understand vertical air mass exchange driven by local circulation in the Himalayas, the volume flux of air mass is estimated in the Rongbuk Valley on the northern slope of Mount Everest, based on a volume closure method and wind-profiler measurements during the HEST2006 campaign in June 2006.Vertical air mass exchange was found to be dominated by a strong downward mass transfer from the late morning to late night. The average vertical air volume flux was 0.09 m s-1, which could be equivalent to a daily ventilation of 30 times the enclosed valley volume. This vertical air mass exchange process was greatly affected by the evolution of the South Asian summer monsoon (SASM), with a strong downward transfer during the SASM break stage, and a weak transfer during the SASM active stage.
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