Seasonal transition characteristics of the westerly jet: Study based on field observations at an altitude of 6900 m on the Mt. Xixiabangma Dasuopu glacier

查看全文 作　　者：LI [1,3]ShengHai;YAO [1,2]TanDong;TIAN [1]LiDe;WANG [4]PengLing

机构地区：[1]Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China;[2]State Key Laboratory of Cryosphere Sciences, Lanzhou 730000, China;[3]Graduate University of Chinese Academy of Sciences, Beijing 100049, China;[4]National Climate Center, China Meteorological Administration, Beijing 100081, China

出　　处：《Chinese Science Bulletin》索引2011年第56卷第18期,共9页

基　　金：supported by the National Natural Science Foundation of China (40830638);Projects of International Cooperation (40810019001);the Third Pole Environment Program (GJHZ0906);the CAS/SAFEA International Partnership Program for Creative Research Teams 摘　　要：To better understand ultra-high-altitude climate characteristics and their changes, an automatic weather station was installed on August 4, 2005 on the Mt. Xixiabangma Dasuopu glacier (28°23.04′N, 85°43.72′E, 6900 m a.s.l.) in the middle of the Himalayas. Mountain weather conditions were observed continuously and automatically. This paper is the first to publish meteorological data for a whole year for a high-elevation region, and analyze wind direction, wind speed, air temperature, air pressure and humidity. Analysis of the observation data reveals that this region was strongly influenced by the westerly jet from October 10, 2005 to April 21, 2006 and by the Indian monsoon from May to September. The seasonal transitions of the westerly jet were characterized by changes in meteorological elements. In winter, influenced by the westerly jet, the wind speed in the study region was very high and fluctuated violently, gale days were frequent, temperature and air pressure fluctuated dramatically, the diurnal range of temperature decreased and the diurnal range of air pressure increased, relative humidity and specific humidity declined sharply, and air was dry. In summer, influenced by the Indian monsoon, the relative humidity and specific humidity were high. In addition, we analyzed reanalysis data for the location of the automatic weather station. The results confirmed that this region was strongly affected by the westerly jet from October 10, 2005 to April 21, 2006 and the observations that the seasonal transitions of the westerly jet were characterized by changes in meteorological elements. 关键词：高海拔地区西风急流达索普冰川希夏邦马峰季节转换基础研究相对湿度自动气象站

相关文献

参考文献（20）
引证文献（2）
耦合文献（169）

参考文献(20)

引证文献(2)

耦合文献(169)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Seasonal transition characteristics of the westerly jet: Study based on field observations at an altitude of 6900 m on the Mt. Xixiabangma Dasuopu glacier

参考文献(20)

引证文献(2)

耦合文献(169)

用户提示