长江源区五道梁的大气质量状况

The Condition of Atmospheric Quality over Wudaoliang

大气质量状况是研究大气对太阳辐射能衰减程度的一个重要方面。利用江河源区五道梁能量收支站1993-09～1999-12的辐射观测资料及1993-09～1995-05 MS-120太阳光度表的观测资料计算了五道梁地区的大气浑浊度,分析了该地的大气质量状况。结果表明,江河源区五道梁的大气洁净,1994～1999年间五道梁地区的ngstr m浑浊度β、D/S、全波段浑浊度TG有增大的趋势,晴空大气透射比及紫外辐射有减小的趋势。

The study on the condition of atmospheric turbidity is an important aspect in understanding the attenua- tion extend of solar radiation transfering through the atmosphere. In this paper, by using the radiative data, ob- served from Sep. 1993 to Dee. 1999, and narrow wave band data observed with sun-photometer MS-120 from Sep. 1993 to May 1995 at Wudaoliang radiative station, the atmospheric turbidities were calculated and the condition of atmospheric quality was analyzed too. The results show that the atmosphere over Wudaoliang is so clear while there is an increscent trend for the atmospheric turbidities of Agstrom, D/S and TG. And the transmittance on clear sky and the UV radiation are decrease.