Aerosol Optical Depth investigated with satellite remote sensing observations in China

35th International Symposium on Remote Sensing of Environment

地球科学;生态环境科学

Die, Hu^1 ; Lei, Zhang^2 ; Hongbin, Wang^3

Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province, Lanzhou Institute of Arid Meteorology, China Meteorological Administration, Lanzhou, 730020, China^1

Key Laboratory for Semi-Arid Climate Change, Ministry of Education, Lanzhou University, Lanzhou 730000, China^2

Jiangsu Institute of Meteorological Sciences, Nanjing 210008, China^3

关键词: Aerosol optical depths;    Average correlation coefficients;    Deep blue algorithms;    NorthWest China;    Satellite remote sensing;    Semi-arid region;    Sun photometers;    Temporal characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/17/1/012003/pdf
DOI  :  10.1088/1755-1315/17/1/012003

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this study, Aerosol Optical Depth (AOD) at 550nm from the MODIS sensor on board the Terra/Aqua satellites were compared with sun photometer (CE-318) measurements from 11 AERONET stations in China. The average correlation coefficient (R) value from the AOD product, using the Aqua-MODIS Deep Blue algorithm, in the Hexi Corridor was 0.67. The MODIS Dark Target algorithm AOD product is superior to Deep Blue algorithm AOD products in SACOL of the Semi-arid regions of the Loess Plateau. These two kinds of algorithm are not applicable to sites in Lanzhou city. The average R value of Dark Target algorithm AOD MODIS products is 0.91 for Terra and 0.88 for Aqua in the eastern part of China. According to the analysis of spatial and temporal characteristics of the two MODIS AOD products in China, high value areas are mainly distributed in the southern part of Xinjiang (0.5∼0.8), Sichuan Basin (0.8∼0.9), North China (0.6∼0.8) and the middle and lower reaches of the Changjiang River (0.8∼1.0). The Deep Blue algorithm for Aqua-MODIS is a good supplement for the retrieval of AOD above bright surfaces of deserts in Northwest China.