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DOI | 10.1016/j.atmosres.2017.03.008 |
Contrast in column-integrated aerosol optical properties during heating and non-heating seasons at Urumqi - Its causes and implications | |
Li, X.1; Xia, X.2,3,4; Che, H.5; Yu, X.1; Liu, Y.1; Dubovik, O.6; Goloub, P.6; Holben, B.7; Estelles, V.8 | |
2017-07-15 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2017 |
卷号 | 191 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; France; USA; Spain |
英文摘要 | Aerosol optical properties were retrieved from two years' worth of Sunphotometer measurements at Urumqi, an urban station in western China. Distinct seasonal variations of aerosol optical properties were revealed. During the heating season, mean aerosol optical depth at 550 nm (T-a), Angstrom exponent calculated from aerosol optical depth at wavelength of 440 and 870 nm (alpha) as well as PM2.5 concentration were 0.58 +/- 0.33, 1.11 +/- 034 and 79.5 +/- 69.6 mu g m(-3), respectively, which contrasted their counterparts during the non-heating season of 0.32 +/- 0.22, 0.79 +/- 0.26, and 35.0 +/- 20.1 mu g m(-3). Seasonal variations of T-a and PM2.5 at Urumqi contrasted with corresponding values in eastern China. Enhancement of T-a was associated with fine mode radius (r(f)) exceeding 0.15 mu m. Relative humidity frequently exceeded 80% during the heating season, which probably resulted in r(f) > 0.15 as a result of the hygroscopic growth under the humid environment. r(f) was larger than value assigned to the fine-mode dominated aerosol models used in the dark-target algorithm of the Moderate Resolution Spectroradiometer (MODIS). Annual mean single scattering albedo at 550 nm (omega) was 0.87 that was close to the value assigned to the absorption aerosol model in the MODIS algorithm. omega increased as T-a increased, probably as a result of the growth of aerosol size. omega of dust aerosols at Urumqi was slightly lower than that in dust source and downwind regions. Substantial differences in aerosol optical and physical properties and their seasonal variation between western and eastern China require maintaining long-term ground based remote sensing aerosols, which would be expected to play an important role in studying aerosol's effects on weather, climate and atmospheric environment. (C) 2017 Elsevier B.V. All fights reserved. |
英文关键词 | Aerosol Optical properties Remote sensing Urumqi |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000403986400004 |
WOS关键词 | NORTH CHINA PLAIN ; BOUNDARY-LAYER ; URBAN SITE ; CLIMATOLOGY ; PARTICULATE ; NETWORK ; AERONET ; MODIS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/38191 |
专题 | 地球科学 |
作者单位 | 1.China Meteorol Adm, Inst Desert Meteorol, Urumqi, Peoples R China; 2.Chinese Acad Sci, Inst Atmospher Phys, LAGEO, Beijing 100029, Peoples R China; 3.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing, Jiangsu, Peoples R China; 4.Univ Chinese Acad Sci, Beijing, Peoples R China; 5.Chinese Acad Meteorol Sci, Key Lab Atmospher Chem, Beijing, Peoples R China; 6.Univ Sci & Technol Lille, Lab Otique Atmospher, Villeneuve Dascq, France; 7.NASA, GSFC, Biospher Sci Branch, Code 923, Greenbelt, MD USA; 8.Univ Valencia, Dept Fis Terra Termodinam, C Dr Molinear 50, Burjassot, Spain |
推荐引用方式 GB/T 7714 | Li, X.,Xia, X.,Che, H.,et al. Contrast in column-integrated aerosol optical properties during heating and non-heating seasons at Urumqi - Its causes and implications[J]. ATMOSPHERIC RESEARCH,2017,191. |
APA | Li, X..,Xia, X..,Che, H..,Yu, X..,Liu, Y..,...&Estelles, V..(2017).Contrast in column-integrated aerosol optical properties during heating and non-heating seasons at Urumqi - Its causes and implications.ATMOSPHERIC RESEARCH,191. |
MLA | Li, X.,et al."Contrast in column-integrated aerosol optical properties during heating and non-heating seasons at Urumqi - Its causes and implications".ATMOSPHERIC RESEARCH 191(2017). |
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