- beijing normal university, physics and Astronomy, astrophysics, China (202431101096@mail.bnu.edu.cn)
Atmospheric aerosols are solid mass and liquor particles levitation in the air,
which have a significant impact on the Earth 's radiation balance of energy and world
climate, achievement of the "carbon-2 goal," and even human health..In addition,
while domestic satellites are booming, there is less satellite data available for
download and of high quality. Therefore, it is an urgent demand of the country to use
FY-3D remote sensing data to retrieve aerosol characteristics in the field of air
satellite remotely sensed.This paper describes the inverse validation of AOD before and after the epidemic in the Yangtze River Delta using the Deep Blue algorithm and the study of its spatial and temporal distribution characteristics.The inversion results show that the MOD04 DB products are significantly correlated with the resampled FY-3D/MERSI-II AOD with a correlation coefficient of 0.810. In addition, the inverted AOD have a better continuity in spatial and temporal distributions in the Yangtze River Delta region.In addition, we comprehensively analyzed the inversion AOD of FY- 3D/MERSI-II and the aerosol optical thickness of Taihu station on the ground in February-June 2018 in the Yangtze River Delta, and make out that the inversion AOD was close to the ground-based observation data and the trend was consistent, and the correlation coefficient between the two was greater than 0.75.Based on the analysis of the temporal and spatial distribution of AOD in the Yangtze River Delta region before and after the epidemic, we found that the AOD values of the entire Yangtze River Delta study area showed a decreasing trend in several cities, and the AOD of several cities decreased more significantly in 2020. From a temporal perspective, the average AOD values showed a decreasing trend from 2018 to 2020, with the largest average AOD value in 2018 and the smallest average AOD value in 2020.
How to cite: bian, X. and xiao, C.: Study on the inversion of aerosol optical parameters and their spatial and temporal distribution characteristics in Yangtze River Delta region based on FY-3D, EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-18028, https://doi.org/10.5194/egusphere-egu25-18028, 2025.
