DOI: 10.1002/2013JD020596
论文题名: Hyperspectral aerosol optical depths from TCAP flights
作者: Shinozuka Y. ; Johnson R.R. ; Flynn C.J. ; Russell P.B. ; Schmid B. ; Redemann J. ; Dunagan S.E. ; Kluzek C.D. ; Hubbe J.M. ; Segal-Rosenheimer M. ; Livingston J.M. ; Eck T.F. ; Wagener R. ; Gregory L. ; Chand D. ; Berg L.K. ; Rogers R.R. ; Ferrare R.A. ; Hair J.W. ; Hostetler C.A. ; Burton S.P.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 21 起始页码: 12180
结束页码: 12194
语种: 英语
英文关键词: aerosol
; airborne
; AOD
; sunphotometer
; TCAP
Scopus关键词: Aerosols
; Atmospheric aerosols
; NASA
; Stars
; Aerosol robotic networks
; airborne
; AOD
; Extinction measurements
; Fiber optic rotary joints
; Ground-based observations
; Sun photometers
; TCAP
; Uncertainty analysis
; aerosol composition
; airborne sensing
; clear sky
; lidar
; optical depth
; satellite data
; wavelength
英文摘要: The 4STAR (Spectrometer for Sky-Scanning, Sun-Tracking Atmospheric Research), a hyperspectral airborne Sun photometer, acquired aerosol optical depths (AOD) at 1 Hz during all July 2012 flights of the Two-Column Aerosol Project. Root-mean-square differences from Aerosol Robotic Network ground-based observations were 0.01 at wavelengths between 500-1020 nm, 0.02 at 380 and 1640 nm, and 0.03 at 440 nm in four clear-sky fly-over events, and similar in ground side-by-side comparisons. Changes in the above-aircraft AOD across 3 km deep spirals were typically consistent with integrals of coincident in situ (on Department of Energy Gulfstream 1 with 4STAR) and lidar (on NASA B200) extinction measurements within 0.01, 0.03, 0.01, 0.02, 0.02, and 0.02 at 355, 450, 532, 550, 700, and 1064 nm, respectively, despite atmospheric variations and combined measurement uncertainties. Finer vertical differentials of the 4STAR measurements matched the in situ ambient extinction profile within 14% for one homogeneous column. For the AOD observed between 350 and 1660 nm, excluding strong water vapor and oxygen absorption bands, estimated uncertainties were ∼0.01 and dominated by (then) unpredictable throughput changes, up to ±0.8%, of the fiber optic rotary joint. The favorable intercomparisons herald 4STAR's spatially resolved high-frequency hyperspectral products as a reliable tool for climate studies and satellite validation. Key Points Our new airborne sunphotometer works It offers spatially-resolved high-frequency hyperspectral products Consistent with coincident observations of AOD and extinction ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63183
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 ARC-CREST, Moffett Field, CA, United States; Bay Area Environmental Research Institute, 596 1st St W, Sonoma, CA 95476, United States; NASA Ames Research Center, Moffett Field, CA, United States; Pacific Northwest National Laboratory, Richland, WA, United States; SRI International, Menlo Park, CA, United States; Universities Space Research Association, Columbia, MD, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Brookhaven National Laboratory, Upton, NY, United States; NASA Langley Research Center, Hampton, VA, United States
Recommended Citation:
Shinozuka Y.,Johnson R.R.,Flynn C.J.,et al. Hyperspectral aerosol optical depths from TCAP flights[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(21)