气候变化领域集成服务门户(CCPortal): A novel simplified method for surface albedo together with a look-up table to get an 18-year assessment of surface aerosol direct radiative effect in Central and East China

CCPortal

DOI	10.1016/j.atmosenv.2020.117858
	A novel simplified method for surface albedo together with a look-up table to get an 18-year assessment of surface aerosol direct radiative effect in Central and East China
	Shi Y.; Zhang M.; Ma Y.; Gong W.; Chen S.; Jin S.; Liu B.
发表日期	2020
ISSN	1352-2310
卷号	243
英文摘要	Calculating the aerosol direct radiative effect (ADRE) is significance for estimating the influence of aerosols. However, calculating ADRE through the radiative transfer model at large scales and for long periods is time-consuming. In this paper, a linear relationship between surface albedo and surface shortwave ADRE (ADRESW) was proposed together with a look-up table to simplify the calculation. The linear relationship is tested and remains reliable as atmospheric properties vary. Validation that compared the results calculated with and without simplifications shows high coefficient of determination (0.97). The time required for calculation with the simplification is only 1/2630th of the unsimplified calculation, which reveals that our method greatly simplified the calculation and maintains high accuracy. Based on the simplification, daily surface ADRESW under clear-sky conditions over Central and East China from 2001 to 2018 is calculated and analyzed. Central and East China has a regional average aerosol optical depth (AOD) of 0.66 and surface ADREsw of −34.33 W/m2. The North China Plain (0.83, −41.42 W/m2), The Jianghan Plain (0.79, −40.33 W/m2) and the Yangtze River Delta City Agglomeration (0.90, −46.50 W/m2) feature heavy aerosol loading and a strong cooling effect. The inter-annual AOD and cooling effect decreased by 37.60% and 33.21%, respectively, after the 2011 accord to decrease anthropogenic emissions, proving the success of efforts by the Chinese government to protect environment. A study of daily shortwave aerosol radiative effect efficiency found that sunshine duration is the primary controlling factor. © 2020 Elsevier Ltd
关键词	Aerosol radiative effect Look-up table Surface albedo simplification
语种	英语
scopus关键词	Radiative transfer; Solar radiation; Table lookup; Aerosol optical depths; Anthropogenic emissions; Atmospheric properties; Central and east chinas; Coefficient of determination; Controlling factors; Linear relationships; Radiative transfer model; Aerosols; aerosol; aerosol composition; albedo; optical depth; radiative transfer; shortwave radiation; state role; aerosol; albedo; article; calculation; China; cooling; government; optical depth; river; China; Hubei; Jianghan Plain; North China Plain; Yangtze Delta
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/248887
作者单位	School of Mathematics and Statistics, Wuhan University, China; Hubei Key Laboratory of Critical Zone Evolution, School of Geography and Information Engineering, China University of Geosciences, Wuhan, 430074, China; State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, China
推荐引用方式 GB/T 7714	Shi Y.,Zhang M.,Ma Y.,et al. A novel simplified method for surface albedo together with a look-up table to get an 18-year assessment of surface aerosol direct radiative effect in Central and East China[J],2020,243.
APA	Shi Y..,Zhang M..,Ma Y..,Gong W..,Chen S..,...&Liu B..(2020).A novel simplified method for surface albedo together with a look-up table to get an 18-year assessment of surface aerosol direct radiative effect in Central and East China.ATMOSPHERIC ENVIRONMENT,243.
MLA	Shi Y.,et al."A novel simplified method for surface albedo together with a look-up table to get an 18-year assessment of surface aerosol direct radiative effect in Central and East China".ATMOSPHERIC ENVIRONMENT 243(2020).