Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/77900
Title: A minimum albedo aerosol retrieval method for the new-generation geostationary meteorological satellite himawari-8
Authors: Yan, X
Li, Z
Luo, N
Shi, W 
Zhao, W
Yang, X
Jin, J
Keywords: AOT
Fine-mode fraction
Himawari-8
Radiative transfer
Issue Date: 2018
Publisher: Elsevier
Source: Atmospheric research, 2018, v. 207, p. 14-27 How to cite?
Journal: Atmospheric research 
Abstract: Aerosol properties, including aerosol optical thickness (AOT) and fine-mode fraction (FMF), are important physical data and are fundamental for climate studies. A minimum albedo aerosol retrieval method (MAARM) was developed for the retrieval of aerosol properties based on the new-generation geostationary meteorological satellite Himawari-8. This method is based on the albedo data which is directly obtained from the Himawari-8 and can successfully output AOT, FMF, and the Ångström exponent (AE) directly. As part of the MAARM, a modified radiative transfer equation was proposed that considers the impact of aerosol multiple scattering. Through comparisons with output from the Second Simulation of a Satellite Signal in the Solar Spectrum (6S) radiative transfer code, the modified radiative transfer equation achieved a high accuracy for the aerosol reflectance calculation (~5%). Aerosol Robotic Network (AERONET) data from three sites in Beijing and its surrounding area for the year 2016 were used to validate MAARM aerosol retrievals. Fifty-seven percent, 57%, and 56% of derived AOT values fell within the estimated error envelope at the Beijing, the Chinese Academy of Meteorological Sciences (CAMS), and Xianghe AERONET stations, respectively. In addition, 36% (58%) of MAARM-derived FMF values fell within the ±10%AERONET FMF envelope (the ±25%AERONET FMF envelope). Overall, an improvement was achieved by the MAARM in retrieving AOT, FMF, and AE compared with Himawari-8 standard aerosol property retrievals; however, there remains a distinct lack of skills in determining FMF and AE and their use from the MAARM retrieval is not recommended at this time. Given that the Himawari-8 satellite provides observations at 10-min intervals, the MAARM is capable of monitoring the spatial distribution of and variation in AOT with a high temporal resolution.
URI: http://hdl.handle.net/10397/77900
ISSN: 0169-8095
EISSN: 1873-2895
DOI: 10.1016/j.atmosres.2018.02.021
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