气候变化领域集成服务门户(CCPortal): Radiative forcing of black carbon in seasonal snow of wintertime based on remote sensing over Xinjiang, China

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DOI	10.1016/j.atmosenv.2021.118204
	Radiative forcing of black carbon in seasonal snow of wintertime based on remote sensing over Xinjiang, China
	Chen W.; Wang X.; Cui J.; Cao X.; Pu W.; Zheng X.; Ran H.; Ding J.
发表日期	2021
ISSN	1352-2310
卷号	247
英文摘要	Black carbon (BC), which consists of the strongest light-absorbing particles (LAPs) in snow, has been regarded as a potential factor accelerating regional climate change and the melting of snow cover globally. In this study, we used remote sensing (Moderate-resolution Imaging Spectroradiometer, MODIS) observations combined with a snow albedo model (Snow, Ice, and Aerosol Radiation, SNICAR) and a radiative transfer model (Santa Barbara DISORT Atmospheric Radiative Transfer, SBDART) to retrieve the radiative forcing (RF) by BC in snow (RMODISBC) across Xinjiang, China, for the first time. The observations in January–February show that the concentrations of BC (equivalent BC) in snow ranged from 44.08 to 1949.9 ng g−1, with an average of 536.71 ng g−1. The lowest concentrations of BC were on the border of the Altay region (AR), with a median concentration in snow of 98.5 ng g−1. South of this area in the industrial region (Tianshan Mountain North Slope Economic Development Belt, TMNSEDB), the median concentration of BC in snow was 913.2 ng g−1 RMODISBC presents distinct spatial variability, with the minimum (3.01W m−2) in the AR and the maximum (40.2W m−2) near industrial areas in TMNSEDB. The regional mean RMODISBC was 20.43 ± 7.3 W m−2 in Xinjiang, and the average values of the impurity index (ILAPs) and SGS in the region were 0.273 and 241.38 μm, respectively. Moreover, based on the multiple linear regressions, the BC emission intensity values were significantly correlated with ILAPs and RF, and the correlation reached 0.681 and 0.661, respectively; thus, the BC emission could explain above 75% of the spatial variance of BC contents in TMNSEDB, confirming the reasonability of the spatial patterns of retrieved RFMODISBC in Xinjiang. Additionally, we found that the distribution of RMODISBC in northern Xinjiang is dominated by ILAPs and BC emissions. We validated RMODISBC using in situ RF estimates (Rsiteestimate), and the error was 24.05 W m−2; furthermore, the biases in RMODISBC were negatively correlated with the BC concentrations and ranged from 24.3% to 326% in Xinjiang. © 2021 Elsevier Ltd
关键词	Black carbon Radiative forcing Remote sensing Snow albedo Xinjiang
语种	英语
scopus关键词	Atmospheric radiation; Carbon; Climate change; Radiative transfer; Radiometers; Remote sensing; Absorbing particles; Atmospheric radiative transfer; Median concentration; Moderate resolution imaging spectroradiometer; Multiple linear regressions; Radiative transfer model; Regional climate changes; Spatial variability; Snow; black carbon; ice; snow; albedo; black carbon; climate change; radiative forcing; radiative transfer; regional climate; remote sensing; seasonal variation; snow cover; winter; albedo; Article; China; concentration (parameter); controlled study; industrial area; priority journal; radiative forcing; remote sensing; snow cover; Xinjiang; China
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248583
作者单位	Key Laboratory of Smart City and Environment Modelling of Higher Education Institute & Key Laboratory of Oasis Ecology, College of Resources and Environment Sciences, Xinjiang University, Urumqi, 830046, China; College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China; Geography Department, Hanshan Normal University, Chaozhou, 521041, China; Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou, China; Digital City Laboratory Company Limited, Jiaxing, 314001, China
推荐引用方式 GB/T 7714	Chen W.,Wang X.,Cui J.,et al. Radiative forcing of black carbon in seasonal snow of wintertime based on remote sensing over Xinjiang, China[J],2021,247.
APA	Chen W..,Wang X..,Cui J..,Cao X..,Pu W..,...&Ding J..(2021).Radiative forcing of black carbon in seasonal snow of wintertime based on remote sensing over Xinjiang, China.ATMOSPHERIC ENVIRONMENT,247.
MLA	Chen W.,et al."Radiative forcing of black carbon in seasonal snow of wintertime based on remote sensing over Xinjiang, China".ATMOSPHERIC ENVIRONMENT 247(2021).