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DOI	10.1029/2021JD035209
	Constraining Aerosol Phase Function Using Dual-View Geostationary Satellites
	Bian Q.; Kreidenweis S.; Chiu J.C.; Miller S.D.; Xu X.; Wang J.; Kahn R.A.; Limbacher J.A.; Remer L.A.; Levy R.C.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:20
英文摘要	Passive satellite observations play an important role in monitoring global aerosol properties and helping quantify aerosol radiative forcing in the climate system. The quality of aerosol retrievals from the satellite platform relies on well-calibrated radiance measurements from multiple spectral bands, and the availability of appropriate particle optical models. Inaccurate scattering phase function assumptions can introduce large retrieval errors. The high-spatial resolution, dual-view observations from the advanced baseline imagers onboard the two most recent geostationary operational environmental satellites (GOES), East and West, provide a unique opportunity to better constrain the aerosol phase function. Using dual GOES reflectance measurements for a dust event in the Gulf of Mexico in 2019, we demonstrate how a first-guess phase function can be reconstructed by considering the variations in observed scattering angles throughout the day. Using the reconstructed phase function, aerosol optical depth retrievals from the two satellites are self-consistent and agree well with surface-based optical depth estimates. We evaluate our methodology and reconstructed phase function against independent retrievals made from low-Earth-orbit multi-angle observations for a different dust event in 2020. Our new aerosol optical depth retrievals have a root-mean-square-difference of 0.019–0.047. Furthermore, the retrievals between the two geostationary satellites for this case agree within about 0.059 ± 0.072, as compared to larger discrepancies between the operational GOES products at times, which do not employ the dual-view technique. © 2021. The Authors.
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236958
作者单位	Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States; Cooperative Institute for Research in the Atmosphere, Colorado State University, Fort Collins, CO, United States; Joint Center for Earth Systems Technology, University of Maryland, Baltimore County, MD, United States; Department of Chemical and Biochemical Engineering, University of Iowa, Iowa City, IA, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Science Systems and Applications, Inc., Lanham, MD, United States
推荐引用方式 GB/T 7714	Bian Q.,Kreidenweis S.,Chiu J.C.,et al. Constraining Aerosol Phase Function Using Dual-View Geostationary Satellites[J],2021,126(20).
APA	Bian Q..,Kreidenweis S..,Chiu J.C..,Miller S.D..,Xu X..,...&Levy R.C..(2021).Constraining Aerosol Phase Function Using Dual-View Geostationary Satellites.Journal of Geophysical Research: Atmospheres,126(20).
MLA	Bian Q.,et al."Constraining Aerosol Phase Function Using Dual-View Geostationary Satellites".Journal of Geophysical Research: Atmospheres 126.20(2021).