WATER VAPOR CONTENT AND MEAN TRANSFER IN THE ATMOSPHERE OVER NORTHWEST CHINA

作     者：俞亚勋 吴国雄 王宝灵 董安祥 白虎志 

作者机构：Lanzhou Arid Meteorological InstituteLanzhou 730020 Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100080 Lanzhou Arid Meteorological InstituteLanzhuo 730020 Lanzhou Center Meteorological ObservatoryLanzhou 730020 

出 版 物：《Acta meteorologica Sinica》 (ACTA METEOROLOGICA SINICA)

年 卷 期：2001年第15卷第2期

页      面：191-204页

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 

主　　题：Northwest China(NWC) water vapor content(WVC) mean water vapor transfer climatic variation 

摘      要：The interannual and intermonthly climatic features of the water vapor content(hereafter WVC)and its mean transfer in the atmosphere over Northwest China(hereafter NWC)are calculated and analyzed by using the NCEP/NCAR global reanalysis grid data(2.5°×2.5°Lat/Lon) for 40 years(1958—1997).The results show that the WVC in the total air column over NWC in four seasons of the year is mainly concentrated on eastern and western NWC *** the average,the WVC over eastern NWC decreases obviously during recent forty years except for *** it decreases over western NWC in the whole *** the WVC over NWC has been increasing since late 1980s in *** water vapor comes from the southwestern warm and wet air current along the Yarlung Zangbo River Valley and the Bay of *** from mid- western Tibetan Plateau and also from the Qinling Mountains at southern Shaanxi *** yearly water vapor divergence appears over the middle of NWC to northern Xinjiang and southeastern Shaanxi *** yearly water vapor convergence appears over the Tarim Basin and the Tibetan Plateau as well as western Sichuan and southern Gansu.