阿克达拉紫外辐射特征  

Characterization of Ultraviolet Radiation at the Akedala Atmospheric Background Station

作　　者：吴彩云 何清[1,3] 赵竹君 谢翔 WU Caiyun;HE Qing;ZHAO Zhujun;XIE Xiang(Institute of Desert Meteorology,China Meteorological Administration/Taklimakan National Field Scientific Observation and Research Station of Desert Meteorology/Taklamakan Desert Meteorology Field Experiment Station of China Meteorological Administration/Xinjiang Key Laboratory of Desert Meteorology and Sandstorms/Akedala Atmospheric Background Field Scientific Experimental Base of China Meteorological Administration,Urumqi 830002,China;College of Geography and Remote Sensing Sciences,Xinjiang University,Urumqi 830046,China;Wulanwusu Ecological and Agricultural Meteorological Experimental Station of China Meteorological Administration,Xinjiang Field Scientific Observation and Research Station of Wulanwusu Ecological and Agricultural Meteorology,Shihezi 832000,China;Akedala Atmospheric Background Station,Altay 836500,China)

机构地区：[1]中国气象局乌鲁木齐沙漠气象研究所/新疆塔克拉玛干沙漠气象国家野外科学观测研究站/中国气象局塔克拉玛干沙漠气象野外科学试验基地/新疆维吾尔自治区沙漠气象与沙尘暴重点实验室/中国气象局阿克达拉大气本底野外科学试验基地,新疆乌鲁木齐830002 [2]新疆大学地理与遥感科学学院,新疆乌鲁木齐830046 [3]中国气象局乌兰乌苏生态与农业气象试验站,乌兰乌苏生态与农业气象新疆野外科学观测研究站,新疆石河子832000 [4]阿克达拉区域大气本底站,新疆阿勒泰836500

出　　处：《沙漠与绿洲气象》2024年第5期146-152,共7页Desert and Oasis Meteorology

基　　金：天山北坡兵地重点城市重污染天气成因、影响机理分析、监测预警及综合治理关键技术研究与应用示范(2023AB036)。

摘　　要：利用阿克达拉基准辐射观测站紫外辐射UV-A和UV-B数据,分析阿克达拉到达地面的UV和UV-B的特征以及不同云量和降水过程的变化特征。结果表明:阿克达拉全年紫外辐射年总量为321.04 MJ·m^(-2),年均日曝辐量为0.88 MJ·m^(-2),UV-B年曝辐量为5.26 MJ·m^(-2),UV年平均值占总辐射年平均值的5.56%。UV和UV-B的辐射强度的季节变化表现为夏季>春季>秋季>冬季。夏季UV曝辐量是冬季的2.79倍;UV-B夏季平均日曝辐量是冬季的8.10倍。积雪期与非积雪期UV占总辐射比值不同,分别为6.44%和5.81%;且地面积雪的反射导致UV增加25.89%。The UV-A and UV-B data of the baseline radiation observatory of the Akedala Atmospheric Background Station were used to analyze the characteristics of UV and UV-B in Akedala and the variation characteristics of different cloud cover and precipitation processes.The results show that the total annual UV radiation at Akedala Atmospheric Background Station reaches 321.1 MJ·m^(-2) throughout the year,with an annual average daily exposure of 0.88 MJ·m^(-2),an annual UV-B exposure of 5.3 MJ·m^(-2),and an annual average of UV radiation as a proportion of the annual average of total radiation of 5.6%.Seasonal changes in the intensity of UV and UV-B radiation were summer>spring>autumn>winter.UV radiation exposure in summer was 2.79 times higher than in winter;UV-B average daily exposure in summer was 8.10 times higher than that in winter.Snow accumulation caused an increase in UV radiation and the ratio of UV-B to total radiation,and the average values of the ratio of UV-B to total radiation in snowy and non-snowy periods were 6.53%and 5.83%,respectively,and snow accumulation increased UV-B radiation on the ground by 25.89%.

关 键 词：阿克达拉 紫外辐射 UV-B 

分 类 号：P422[天文地球—大气科学及气象学]