气候变化领域集成服务门户(CCPortal): Spatial distribution of aerosol microphysical and optical properties and direct radiative effect from the China Aerosol Remote Sensing Network

CCPortal

DOI	10.5194/acp-19-11843-2019
	Spatial distribution of aerosol microphysical and optical properties and direct radiative effect from the China Aerosol Remote Sensing Network
	Che H.; Xia X.; Zhao H.; Dubovik O.; Holben B.N.; Goloub P.; Cuevas-Agulló E.; Estelles V.; Wang Y.; Zhu J.; Qi B.; Gong W.; Yang H.; Zhang R.; Yang L.; Chen J.; Wang H.; Zheng Y.; Gui K.; Zhang X.; Zhang X.
发表日期	2019
ISSN	16807316
起始页码	11843
结束页码	11864
卷号	19 期号:18
英文摘要	Multi-year observations of aerosol microphysical and optical properties, obtained through ground-based remote sensing at 50 China Aerosol Remote Sensing Network (CARSNET) sites, were used to characterize the aerosol climatology for representative remote, rural, and urban areas over China to assess effects on climate. The annual mean effective radii for total particles (ReffT) decreased from north to south and from rural to urban sites, and high total particle volumes were found at the urban sites. The aerosol optical depth at 440nm (AOD440 nm) increased from remote and rural sites (0.12) to urban sites (0.79), and the extinction Ångström exponent (EAE440-870nm) increased from 0.71 at the arid and semi-arid sites to 1.15 at the urban sites, presumably due to anthropogenic emissions. Single-scattering albedo (SSA440 nm) ranged from 0.88 to 0.92, indicating slightly to strongly absorbing aerosols. Absorption AOD440 nm values were 0.01 at the remote sites versus 0.07 at the urban sites. The average direct aerosol radiative effect (DARE) at the bottom of atmosphere increased from the sites in the remote areas (-24.40Wm-2) to the urban areas (-103.28Wm-2), indicating increased cooling at the latter. The DARE for the top of the atmosphere increased from -4.79Wm-2 at the remote sites to -30.05Wm-2 at the urban sites, indicating overall cooling effects for the Earth-atmosphere system. A classification method based on SSA440 nm, fine-mode fraction (FMF), and EAE440-870 nm showed that coarse-mode particles (mainly dust) were dominant at the rural sites near the northwestern deserts, while light-absorbing, fine-mode particles were important at most urban sites. This study will be important for understanding aerosol climate effects and regional environmental pollution, and the results will provide useful information for satellite validation and the improvement of climate modelling. © Author(s) 2019.
语种	英语
scopus关键词	aerosol property; albedo; climate effect; climate modeling; climatology; optical depth; optical property; radiative forcing; remote sensing; spatial distribution; 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/144143
作者单位	State Key Laboratory of Severe Weather (LASW), Key Laboratory of Atmospheric Chemistry (LAC), Chinese Academy of Meteorological Sciences, CMA, Beijing, 100081, China; Laboratory for Middle Atmosphere and Global Environment Observation (LAGEO), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; School of the Earth Science, University of Chinese Academy of Science, Beijing, 100049, China; Environmental and Meteorological Department, Institute of Atmospheric Environment, CMA, Shenyang, 110016, China; Laboratoire d'Optique Amosphérique, Université des Sciences et Technologies de Lille, Villeneuve d'Ascq, 59655, France; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Centro de Investigación Atmosférica de Izaña, AEMET, Santa Cruz de Tenerife, 38001, Spain; Dept. Fisica de la Terra i Termodinamica, Universitat de València, C/ Dr. Moliner 50, Burjassot, 46100, Spain; Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing...
推荐引用方式 GB/T 7714	Che H.,Xia X.,Zhao H.,et al. Spatial distribution of aerosol microphysical and optical properties and direct radiative effect from the China Aerosol Remote Sensing Network[J],2019,19(18).
APA	Che H..,Xia X..,Zhao H..,Dubovik O..,Holben B.N..,...&Zhang X..(2019).Spatial distribution of aerosol microphysical and optical properties and direct radiative effect from the China Aerosol Remote Sensing Network.Atmospheric Chemistry and Physics,19(18).
MLA	Che H.,et al."Spatial distribution of aerosol microphysical and optical properties and direct radiative effect from the China Aerosol Remote Sensing Network".Atmospheric Chemistry and Physics 19.18(2019).