青藏高原五道梁地区大气浑浊度的观测和分析  

OBSERVATION AND ANALYSIS OF ATMOSPHERICTURBIDITY OVER WUDAOLIANG AREA INQINGHAI-XIZANG PLATEAUX

作　　者：袁福茂[1] 季国良[1] 马晓燕[1] 

机构地区：[1]中国科学院兰州高原大气物理研究所

出　　处：《高原气象》1998年第2期127-134,共8页Plateau Meteorology

基　　金：国家攀登项目

摘　　要：利用１９９３年８月～１９９５年５月青藏高原五道梁地区ＭＳ—１２０型太阳光度表的观测资料，分析了该地区大气浑浊度的特征。结果表明：（１）该地区上空的大气洁净，受人类活动影响很小，其浑浊度状况与珠峰地区的绒布寺（５０００ｍ）及南极地区有相似的量级，但比城市地区要小一个数量级。（２）本区的大气浑浊度具有较明显的季节变化特征，但日变化不明显。（３）大气浑浊度不仅与地面大气状况（地面风向、风速、降水等气象因子）关系密切，而且还与测站的地理环境等因素有关。In this paper, the characteristics of atmospheric turbidity at Wudaoliang in the Qinghai-Xizang Plateau are analysed by using the atmospheric turbidity data observed with the MS—120 sunphotometer from August 1993 to May 1995. The results show that: (1) The air is very clean, and anthropogenic effect is little over Wudaoliang, which is comparable to that obtained at the Rongbusi ( 5 000m above sea level ) in Mount Qomolangma area and at the Antarctic area,but it is less by an order of magnitude than that in the city. (2) The characteristic of seasonal variation of atmospheric turbidity is obvious, but its diurnal variation is not obvious in Wudaoliang area. (3) The atmospheric turbidity are related not only to atmospheric state near the ground ( such as wind direction, wind speed and rainfall intensity etc. ), but also to the geographic environment of observation station etc.

关 键 词：青藏高原 大气 浑浊度 季节变化 五道梁地区 

分 类 号：P427.122[天文地球—大气科学及气象学]