Publications

Li, WD; Dong, LY; Khan, S (2019). Environmental Study on Contribution Rates of Aerosol Scale Height and Humidity in PM2.5 Inversion Based on Calipso Data. EKOLOJI, 28(107), 1185-1197.

Abstract
For the study area, Introducing the humidity correction and aerosol scale height correction methods, the optimal Aerosol optical thickness (AOT) and the PM2.5 mass concentration estimation models are selected as the Monadic quadratic equation model. Based on 5 point sliding average method and accumulated variance analysis, using the cumulative slope change ratio comparison method, taking the winter as the base period without considering other factors, the relative contribution rate of relative humidity to PM2.5 in the process of retrieving PM2.5 mass concentration was calculated to be 31.60% and 48.40% respectively in spring-summer and autumn, the relative contribution rate of Aerosol scale height to AOT was 72.28% and 40.23% respectively in spring -summer and autumn, the relative contribution rate of relative humidity to AOT was 24.59% and 26.23% respectively in spring-summer and autumn. By analyzing the contribution rate of relative humidity and Aerosol scale height to AOT or PM2.5, this study reveals the sensitivity of AOT to relative humidity and Aerosol scale height and the sensitivity of PM2.5 to relative humidity. It provides a reference for a more accurate inversion of PM2.5 mass concentration in near ground surface. The National Institute for Environmental Studies (NIES) began continuous observation of the atmosphere in 1996 in Tsukuba, Japan, with a compact Mie-scattering lidar system, and added polarization measurement capability in 1999. Similar systems were installed at Nagasaki University on 22 February 2001 and at the Sino-Japan Friendship Center for Environmental Protection in Beijing on 1 March 2001.

DOI:

ISSN:
1300-1361