气候变化领域集成服务门户(CCPortal): Improved inversion of aerosol components in the atmospheric column from remote sensing data

CCPortal

DOI	10.5194/acp-20-12795-2020
	Improved inversion of aerosol components in the atmospheric column from remote sensing data
	Zhang Y.; Li Z.; Chen Y.; De Leeuw G.; Zhang C.; Xie Y.; Li K.
发表日期	2020
ISSN	1680-7316
起始页码	12795
结束页码	12811
卷号	20 期号:21
英文摘要	Knowledge of the composition of atmospheric aerosols is important for reducing uncertainty in climate assessment. In this study, an improved algorithm is developed for the retrieval of atmospheric columnar aerosol components from optical remote sensing data. This is achieved by using the complex refractive index (CRI) of a multicomponent liquid system in the forward model and minimizing the differences with the observations. The aerosol components in this algorithm comprise five species, combining eight subcomponents including black carbon (BC), water-soluble organic matter (WSOM) and water-insoluble organic matter (WIOM), ammonium nitrate (AN), sodium chloride (SC), dust-like content (DU), and aerosol water content in the fine and coarse modes (AWf and AWc). The calculation of the CRI in the multicomponent liquid system allows for the separation of the water-soluble components (AN, WSOM and AWf) in the fine mode and SC and AWc in the coarse mode. The uncertainty in the retrieval results is analyzed based on the simulation of typical models, showing that the complex refractive index obtained from instantaneous optical-physical inversion compares well with that obtained from chemical estimation. The algorithm was used to retrieve the columnar aerosol components over China using the ground-based remote sensing measurements from the Sun-sky radiometer Observation NETwork (SONET) in the period from 2010 to 2016. The results were used to analyze the regional distribution and interannual variation. The analysis shows that the atmospheric columnar DU component is dominant in the northern region of China, whereas the AW is higher in the southern coastal region. The SC component retrieved over the desert in northwest China originates from a paleomarine source. The AN significantly decreased from 2011 to 2016, by 21.9mgm-2, which is inseparable from China's environmental control policies. © 2020 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	aerosol; algorithm; ammonium nitrate; black carbon; data inversion; desert; dust; forward modeling; ground-based measurement; organic matter; refractive index; remote sensing; sodium chloride; water content; China
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/247421
作者单位	Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, 100101, China; Public Meteorological Service Center, China Meteorological Administration, Beijing, 100081, China; RandD Satellite Observations, Royal Netherlands Meteorological Institute (KNMI), De Bilt, 3730AE, Netherlands
推荐引用方式 GB/T 7714	Zhang Y.,Li Z.,Chen Y.,et al. Improved inversion of aerosol components in the atmospheric column from remote sensing data[J],2020,20(21).
APA	Zhang Y..,Li Z..,Chen Y..,De Leeuw G..,Zhang C..,...&Li K..(2020).Improved inversion of aerosol components in the atmospheric column from remote sensing data.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(21).
MLA	Zhang Y.,et al."Improved inversion of aerosol components in the atmospheric column from remote sensing data".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.21(2020).