Quantitative Estimation of Air Mass Exchange by Along-Valley Wind in the Rongbuk Valley

作     者：Zhou Li-Bo Zou Han Ma Shu-Po Zhu Jin-Huan Li Peng Huo Cui-Ping 

作者机构：LAPC & LAOR Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100085 China 

出 版 物：《Atmospheric and Oceanic Science Letters》 (大气和海洋科学快报(英文版))

年 卷 期：2009年第2卷第1期

页      面：29-34页

学科分类：0710[理学-生物学] 0908[农学-水产] 07[理学] 0707[理学-海洋科学] 070601[理学-气象学] 0706[理学-大气科学] 0816[工学-测绘科学与技术] 0825[工学-航空宇航科学与技术] 

基　　金：financed by the National Natural Science Foundation of China (Grant No.40533018) the Ministry of Science and Technology of the People’s Republic of China (Grant No.2009CB421403) the Chinese Academy of Sciences (Grant Nos.KZCX3-SW-231 and 8-070203) 

主　　题：air mass exchange quantitative estimation along-valley wind the Himalayas 

摘      要：For a better understanding of the air mass exchange processes between the surface and free atmos-phere in the Himalayas,a Himalayan exchange between the surface and troposphere 2007 (HEST2007) campaign was carried out in the Rongbuk Valley,on the northern slope of ***,in June *** wind,tem-perature and radiation conditions were measured during the *** these observation data,together with the National Centers for Environmental Prediction/the National Center for Atmospheric Research (NCEP/NCAR) reanalysis data,the air mass exchange between the inside of the valley and the outside of the valley is quantitatively estimated,based on a closed-valley *** air mass is strongly injected into the Rongbuk Valley in the after-noon,which dominates the diurnal cycle,by a strong downward along-valley wind,with a maximum down-ward transfer rate of 9.4 cm s?*** total air volume flux injected into the valley was 2.6×1011 m3 d?1 in 24 hours in June 2007,which is 15 times the total volume of the *** air mass transfer into the valley also exhibited a clear daily variation during the HEST2007 campaign,which can be affected by the synoptic situations through the adjustment of local radiation conditions.