Validation of MODIS C6 Aerosol Optical Depth in China

• Published in: IOP Conference Series: Materials Science and Engineering
• Main Authors: Zhang, Tianqi, Cao, Hongye, Song, Huaiqing, Shi, Haixia
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: IOP Publishing 2020
• Subjects: Aerosol Robotic Network
• Online Access: http://dx.doi.org/10.1088/1757-899x/780/4/042045; https://iopscience.iop.org/article/10.1088/1757-899X/780/4/042045/pdf; https://iopscience.iop.org/article/10.1088/1757-899X/780/4/042045

Abstract The accuracy of MODIS Collection 6 (C6) aerosol optical depth (AOD) products in China is validated by using AERONET (Aerosol Robotic Network) ground observation data. The scatter plots and linear fitting results of each ground site are obtained, and the research area is divided into five parts. Analyzed the retrieval effects of MODIS C6 AOD products in different areas. The results show that: (1) In North China and Southeastern coastal, the difference between MODIS and AERONET AOD is small, and the retrieval accuracy is good. (2) The Northwest and Central and Eastern are uncertain due to the diversity of topography and landforms. (3) The accuracy of the Qinghai-Tibet Plateau is poor and there is a serious overestimation. Compared with the previous MODIS version of AOD products, the accuracy of C6 products in various regions of China has been significantly improved, which can provide data support for aerosol spatial-temporal distribution and atmospheric particulate matter retrieval research.