摘要
通过对比分析 1998年夏季各月青藏高原及周边地区GMSTBB及由HLAFS资料计算的湿度(T -Td、θse)和水汽通量平均场 ,指出 :TBB场展示的云区及无云或少云区可以直观地揭示出大气中湿、干区的分布 ,准纬向和准经向TBB低值带分别指示出大气中的水汽汇合区和水汽输送带。据此 ,由 17年夏季TBB总平均场分析得到 :青藏高原上空为北部较干、南部很湿 ,并且南部湿区中又是中、东部较湿和嵌入有两个湿中心区 ,西部较干 ;高原上的水汽来自孟加拉湾和阿拉伯海 ,并且主要从 85°～
Based on the contrast analysis of monthly GMS TBB and humidity (%T-T%-d, %θ%-{se})from HLAFS in summer 1998 over the Plateau and its surrounding areas, it is shown that the cloud field and cloudless field revealed by TBBshow directly the distribution of wet and dry air fields, and the low TBB bands orientated quasi-latitudinal and longitudinal patterns indicate vapor converging area and transporting channel, respectively. Therefore, some opinions, according to the analysis of mean TBBfields the summer of the 17 years were presented that the air is drier over the northern Plateau and very wet over the southern Plateau where wetter area is in middle and eastern regions and two wet centers embedded in it and drier in western regions; the water vapor source over the Plateau comes from the Bay of Bangal and Arabic Sea and its entrance into the Plateau is in the some favorable regions between 85°～95°E.
出处
《高原气象》
CSCD
北大核心
2002年第1期20-24,共5页
Plateau Meteorology
基金
"我国重大天气灾害形成机理和预测理论研究"项目 (G19980 40 90 8)的资助
