DOI: 10.1002/2013JD021166
论文题名: Intercomparison of aerosol single-scattering albedo derived from AERONET surface radiometers and LARGE in situ aircraft profiles during the 2011 DRAGON-MD and DISCOVER-AQ experiments
作者: Schafer J.S. ; Eck T.F. ; Holben B.N. ; Thornhill K.L. ; Anderson B.E. ; Sinyuk A. ; Giles D.M. ; Winstead E.L. ; Ziemba L.D. ; Beyersdorf A.J. ; Kenny P.R. ; Smirnov A. ; Slutsker I.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 21698996
出版年: 2014
卷: 119, 期: 12 起始页码: 7439
结束页码: 7452
语种: 英语
英文关键词: aerosol
Scopus关键词: Aerosols
; Air quality
; Aircraft
; Atmospheric aerosols
; Experiments
; NASA
; Radiometers
; Refractive index
; Solar radiation
; Space flight
; Aerosol monitoring networks
; Aerosol optical depths
; Aerosol robotic networks
; Aircraft measurement
; Combined uncertainty
; Goddard Space Flight Center
; Single-scattering albedo
; Water vapor measurement
; Loading
英文摘要: Single-scattering albedo (SSA) retrievals obtained with CIMEL Sun-sky radiometers from the Aerosol Robotic Network (AERONET) aerosol monitoring network were used to make comparisons with simultaneous in situ sampling from aircraft profiles carried out by the NASA Langley Aerosol Group Experiment (LARGE) team in the summer of 2011 during the coincident DRAGON-MD (Distributed Regional Aerosol Gridded Observational Network-Maryland) and DISCOVER-AQ (Deriving Information on Surface conditions from Column and Vertically Resolved Observations Relevant to Air Quality) experiments. The single-scattering albedos (interpolated to 550 nm) derived from AERONET measurements for aerosol optical depth (AOD) at 440 nm ≥ 0.4 (mean SSA: 0.979) were on average 0.011 lower than the values derived from the LARGE profile measurements (mean SSA: 0.99). The maximum difference observed was 0.023 with all the observed differences within the combined uncertainty for the stated SSA accuracy (0.03 for AERONET; 0.02 for LARGE). Single-scattering albedo averages were also analyzed for lower aerosol loading conditions (AOD ≥ 0.2) and a dependence on aerosol optical depth was noted with significantly lower single-scattering albedos observed for lower AOD in both AERONET and LARGE data sets. Various explanations for the SSA trend were explored based on other retrieval products including volume median radius and imaginary refractive index as well as column water vapor measurements. Additionally, these SSA trends with AOD were evaluated for one of the DRAGON-MD study sites, Goddard Space Flight Center, and two other Mid-Atlantic AERONET sites over the long-term record dating to 1999. Key Points Comparison of AERONET CIMEL SSA retrievals with aircraft measurements Assessment of mid-Atlantic aerosol via intensive study and decadal data set Results of DRAGON-MD/DISCOVER-AQ Baltimore-Washington campaign are presented ©2014. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63051
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: NASA Goddard Space Flight Center, Greenbelt, MD, United States; Sigma Space Corporation, Lanham, MD, United States; University Space Research Association, Columbia, MD, United States; NASA Langley Research Center, Hampton, VA, United States
Recommended Citation:
Schafer J.S.,Eck T.F.,Holben B.N.,et al. Intercomparison of aerosol single-scattering albedo derived from AERONET surface radiometers and LARGE in situ aircraft profiles during the 2011 DRAGON-MD and DISCOVER-AQ experiments[J]. Journal of Geophysical Research: Atmospheres,2014-01-01,119(12)