globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2018.03.024
Scopus记录号: 2-s2.0-85044150549
论文题名:
Daytime variation of aerosol optical depth in North China and its impact on aerosol direct radiative effects
作者: Song J; , Xia X; , Che H; , Wang J; , Zhang X; , Li X
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 182
起始页码: 31
结束页码: 40
语种: 英语
英文关键词: Aerosol optical depth ; Daytime variation ; Direct radiative effects ; North China
Scopus关键词: Atmospheric aerosols ; Optical properties ; Overpasses ; Radiative transfer ; Remote sensing ; Aerosol optical depths ; Aerosol remote sensing ; Daytime variation ; North China ; North China Plain ; Radiative effects ; Radiative transfer model ; Top of the atmospheres ; Aerosols
Scopus学科分类: Environmental Science: Water Science and Technology ; Earth and Planetary Sciences: Earth-Surface Processes ; Environmental Science: Environmental Chemistry
英文摘要: Daytime cycles of aerosol optical depth (AOD) and Angstrom exponent (AE) climatology were analyzed based on long-term (5–15 years) measurements at 18 stations of the China Aerosol Remote Sensing Network (CARSNET) in North China. AOD in Northwest China (NWC) exhibits a daytime trend with negative departures in the early morning and later afternoon while positive departures at midday. Daytime AOD relative departure in different sites and seasons varies from −30.26% to 30.28%. AE in NWC shows an opposite pattern to daytime variation of AOD. Daytime variation of AE is negligible in North China Plain (NCP), AOD increases steadily throughout the day. This trend is consistent and repeatable in four seasons. Such pronounced variability in AOD and AE should be taken accounted for in the estimation of diurnal aerosol direct radiative effects (ADRE), as suggested by the radiative transfer model simulations. The replacement of the observed daytime variation of AOD and AE by daytime mean values in NWC results in ADRE differences of 0.31 Wm−2 at the surface and 0.05 Wm−2 at the top of the atmosphere (TOA). ADRE in NWC will be underestimated by −0.47 Wm-2 and -0.25 Wm-2 at the surface and TOA, respectively, if instantaneous AOD and AE during the overpass time of Terra and Aqua are taken as the daytime mean values. The annual mean ADRE at the surface and TOA will be underestimated by −0.17 Wm-2 and -0.03 Wm-2 if daytime variations of AOD and AE are replaced by daytime mean values in NCP. ADRE will be underestimated by −0.07 Wm-2 at the surface and −0.06 Wm-2 at the TOA if instantaneous AOD and AE during the overpass time of Terra and Aqua other than daytime variation of AOD and AE are used in the calculations. © 2018 Elsevier Ltd
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82859
Appears in Collections:气候变化事实与影响

Files in This Item:

There are no files associated with this item.


作者单位: LAGEO, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; College of Earth Sciences, University of Chinese Academy of Sciences, Beijing, China; Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing, China; State Key Laboratory of Severe Weather (LASW) and Institute of Atmospheric Composition, Chinese Academy of Meteorological Sciences (CAMS), CMA, Beijing, China; Department of Chemical and Biochemical Engineering, Center for Global and Regional Environmental Studies, and Informatics Initiative, University of Iowa, Iowa City, IA, United States; School of Atmospheric Sciences, Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Chengdu University of Information Technology, Chengdu, China; National Satellite Meteorological Center, China Meteorological Administration, Beijing, China

Recommended Citation:
Song J,, Xia X,, Che H,et al. Daytime variation of aerosol optical depth in North China and its impact on aerosol direct radiative effects[J]. Atmospheric Environment,2018-01-01,182
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Song J]'s Articles
[, Xia X]'s Articles
[, Che H]'s Articles
百度学术
Similar articles in Baidu Scholar
[Song J]'s Articles
[, Xia X]'s Articles
[, Che H]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Song J]‘s Articles
[, Xia X]‘s Articles
[, Che H]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.