First in situ UV profile across the UTLS accompanied by ozone measurement over the Tibetan Plateau  

作　　者：Jinqiang Zhang Xiangao Xia Xue Wu 

机构地区：[1]Key Laboratory of Middle Atmosphere and Global Environment Observation,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China [2]Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science&Technology,Nanjing,210044,China [3]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Journal of Environmental Sciences》2020年第12期71-76,共6页环境科学学报（英文版）

基　　金：supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (No. XDA17010101);the National Natural Science Foundation of China (No. 41875183);supported by the National Natural Science Foundation of China under grant nos. 41975049 and 41861134034;the National Key R&D Program of China (No. 2017YFA0603504)。

摘　　要：Ultraviolet radiation(UV) and ozone can greatly affect human health and the Earth's ecological environment. By deploying a UV radiometer aboard a stratospheric balloon released at Qaidam(QDM) during the Asian summer monsoon(ASM) period in 2019, we provided in situ measurement of the UV profiles from the surface to the upper troposphere and lower stratosphere over the Tibetan Plateau(TP), China, for the first time. Based on two in situ UV profiles accompanied by four ozonesonde measurements, this study exhibited detailed variations of downwelling UV and vertical ozone distributions over the TP during the ASM period. The UV differences between the surface and stratospheric balloon flight altitudes were 16.7, 15.8, 12.6 and 18.0 Wm^-2 during the four ozonesonde launches. Due to the diurnal variations in photochemical production and the stratosphere-troposphere exchange, the integrated ozone columns below 30 km ranged from 184.4 to 221.6 DU from four ozonesonde measurements. A positive correlation between UV attenuation and ozone column was exhibited under low cloud cover and clear sky conditions. The results of this study are expected to improve our understanding of UV and ozone properties, as well as their potential effects on terrestrial ecosystems and living environments over this significant plateau.

关 键 词：Ultraviolet radiation OZONE In situ measurements Asian summer monsoon Tibetan Plateau 

分 类 号：X16[环境科学与工程—环境科学] P412[天文地球—大气科学及气象学]