DOI: 10.1002/jgrd.50550
论文题名: Airborne MAX-DOAS measurements over California: Testing the NASA OMI tropospheric NO<inf>2</inf> product
作者: Oetjen H. ; Baidar S. ; Krotkov N.A. ; Lamsal L.N. ; Lechner M. ; Volkamer R.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 13 起始页码: 7400
结束页码: 7413
语种: 英语
英文关键词: Air Quality
; DOAS
; Nitrogen dioxide
; satellite
Scopus关键词: Air quality
; NASA
; Nitrogen compounds
; Pixels
; Reduction
; Satellites
; Solar radiation
; Troposphere
; Uncertainty analysis
; Differential optical absorption spectroscopy
; DOAS
; Independent measurement
; Nitrogen dioxides
; Ozone monitoring instruments
; Representative sample
; Strong correlation
; Tropospheric columns
; Nitrogen oxides
; aerosol
; air quality
; airborne sensing
; correlation
; data set
; environmental monitoring
; measurement method
; nitrogen oxides
; ozone
; pixel
; spectroscopy
; troposphere
; California
; United States
英文摘要: Airborne Multi-AXis Differential Optical Absorption Spectroscopy (AMAX-DOAS) measurements of NO2 tropospheric vertical columns were performed over California for two months in summer 2010. The observations are compared to the NASA Ozone Monitoring Instrument (OMI) tropospheric vertical columns (data product v2.1) in two ways: (1) Median data were compared for the whole time period for selected boxes, and the agreement was found to be fair (R = 0.97, slope = 1.4 ± 0.1, N = 10). (2) A comparison was performed on the mean of coincident AMAX-DOAS measurements within the area of the corresponding OMI pixels with the tropospheric NASA OMI NO2 assigned to that pixel. The effects of different data filters were assessed. Excellent agreement and a strong correlation (R = 0.85, slope = 1.05 ± 0.09, N = 56) was found for (2) when the data were filtered to eliminate large pixels near the edge of the OMI orbit, the cloud radiance fraction was <50%, the OMI overpass occurred within 2 h of the AMAX-DOAS measurements, the flight altitude was >2 km, and a representative sample of the footprint was taken by the AMAX-DOAS instrument. The AMAX-DOAS and OMI data sets both show a reduction of NO2 tropospheric columns on weekends by 38 ± 24% and 33 ± 11%, respectively. The assumptions in the tropospheric satellite air mass factor simulations were tested using independent measurements of surface albedo, aerosol extinction, and NO2 profiles for Los Angeles for July 2010 indicating an uncertainty of 12%. Key Points Airborne and OMI satellite NO2 VCD compare within 12% Agreement applies over high surface albedo and summer in California Reduction in NO2 VCD during weekends is highly significant ©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/63555
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: Department of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, CO 80309, United States; Cooperative Institute for Research in Environmental Sciences, University of Boulder, Boulder, CO, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Goddard Earth Sciences Technology and Research, Universities Space Research Association, Columbia, MD, United States; UCLA/JPL Joint Institute for Regional Earth System Science and Engineering, Los Angeles, CA, United States
Recommended Citation:
Oetjen H.,Baidar S.,Krotkov N.A.,et al. Airborne MAX-DOAS measurements over California: Testing the NASA OMI tropospheric NO<inf>2</inf> product[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(13)