Vertical profile of aerosol extinction based on the measurement of O4 of multi-elevation angles with MAX-DOAS  

作　　者：Fusheng Mou Jing Luo Suwen Li Wei Shan Lisha Hu 牟福生;雒静;李素文;单巍;胡丽莎(School of Physics and Electronic Information, Huaibei Normal University)

机构地区：[1]School of Physics and Electronic Information, Huaibei Normal University

出　　处：《Chinese Physics B》2019年第8期195-200,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.41875040,41705012,and 1605013)

摘　　要：A method for aerosol extinction profile retrieval using ground-based multi-axis differential optical absorption spectroscopy(MAX-DOAS)is studied,which is based on a look-up table algorithm.The algorithm uses parametric method to represent aerosol extinction profiles and simulate different atmospheric aerosol states through atmospheric radiation transfer model.Based on the method,aerosol extinction profile was obtained during six cloud-free days.The O4 differential air mass factor(dAMF)measured by MAX-DOAS is compared with the corresponding model results under different atmospheric conditions(R^2=0.78).The aerosol optical thickness,aerosol weight factor in boundary layer,and the height of the boundary layer are obtained after the process of minimization and look-up table method.The retrieved aerosol extinction in boundary layer is compared with PM2.5 data measured by ground point instrument.The diurnal variation trends of the two methods are in good agreement.The correlation coefficients of the two methods are 0.71 when the aerosol optical thickness is smaller than 0.5.The results show that the look-up table method can obtain the aerosol state of the troposphere and provide validation for other instrument data.A method for aerosol extinction profile retrieval using ground-based multi-axis differential optical absorption spectroscopy（MAX-DOAS） is studied, which is based on a look-up table algorithm. The algorithm uses parametric method to represent aerosol extinction profiles and simulate different atmospheric aerosol states through atmospheric radiation transfer model. Based on the method, aerosol extinction profile was obtained during six cloud-free days. The O4 differential air mass factor（dAMF） measured by MAX-DOAS is compared with the corresponding model results under different atmospheric conditions（R2= 0.78）. The aerosol optical thickness, aerosol weight factor in boundary layer, and the height of the boundary layer are obtained after the process of minimization and look-up table method. The retrieved aerosol extinction in boundary layer is compared with PM2.5 data measured by ground point instrument. The diurnal variation trends of the two methods are in good agreement. The correlation coefficients of the two methods are 0.71 when the aerosol optical thickness is smaller than 0.5. The results show that the look-up table method can obtain the aerosol state of the troposphere and provide validation for other instrument data.

关 键 词：vertical profile of AEROSOL EXTINCTION look-up TABLE O4 DIFFERENTIAL air mass factor MULTI-AXIS DIFFERENTIAL optical ABSORPTION spectroscopy 

分 类 号：O4[理学—物理]