DOI: 10.1016/j.atmosres.2018.04.024
Scopus记录号: 2-s2.0-85047250147
论文题名: Evaluation of satellite aerosol retrievals with in situ aircraft and ground measurements: Contribution of relative humidity
作者: Quan J. ; Jiang C. ; Xin J. ; Zhao X. ; Jia X. ; Liu Q. ; Gao Y. ; Chen D.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 212 起始页码: 1
结束页码: 5
语种: 英语
英文关键词: Aircraft measurements
; AOD
; Relative humidity
Scopus关键词: Atmospheric aerosols
; Atmospheric humidity
; Radiometers
; Satellite imagery
; Aerosol concentration
; Aerosol optical depths
; Aircraft measurement
; Complex relationships
; Ground measurements
; Ground observations
; Moderate resolution imaging spectroradiometer
; PM2.5 concentration
; Aircraft
; aerosol
; airborne survey
; ground-based measurement
; in situ measurement
; optical depth
; relative humidity
; satellite imagery
; Beijing [China]
; China
英文摘要: The contribution of relative humidity (RH) on Moderate Resolution Imaging Spectroradiometer (MODIS) aerosol optical depth (AOD) was investigated based on in-situ aircraft and ground observations of aerosol and RH from 2007 to 2010 in Beijing, China. The profiles of dry aerosol particle number and size distributions with diameter ranging from 0.1 to 3.0 μm as well as RH were observed during aircraft measurement. The calculated AOD based on aircraft observed dry aerosol particles is lower than MODIS AOD under high RH, but consistent with MODIS AOD after accounting for the aerosol hygroscopic growth effect. A comparison of ground PM2.5 and MODIS AOD further shows that the ratio of PM2.5 concentration to AOD decreases with RH. These results collectively suggest that a strong aerosol hygroscopic growth effect on AOD. The averaged contribution of RH (hygroscopic growth) on AOD are estimated as 37% and 22% respectively based on in-situ aircraft and ground measurements, and hence aerosol concentration would be overestimated if the aerosol hygroscopic growth effect is neglected. As a result, it should be cautious with the applications of AOD in studying the complex relationships between aerosol and its climatic effects. © 2018 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108829
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Institute of Urban Meteorology, Chinese Meteorological Administration, Beijing, China; Beijing Weather Modification Office, Beijing, China; Chinese Academy for Environmental Planning, Beijing, China; Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Weather Modification Center, Chinese Academy of Meteorological Sciences, Beijing, China
Recommended Citation:
Quan J.,Jiang C.,Xin J.,et al. Evaluation of satellite aerosol retrievals with in situ aircraft and ground measurements: Contribution of relative humidity[J]. Atmospheric Research,2018-01-01,212