DOI: 10.1002/2016JD025483
论文题名: High-resolution NO2 observations from the Airborne Compact Atmospheric Mapper: Retrieval and validation
作者: Lamsal L.N. ; Janz S.J. ; Krotkov N.A. ; Pickering K.E. ; Spurr R.J.D. ; Kowalewski M.G. ; Loughner C.P. ; Crawford J.H. ; Swartz W.H. ; Herman J.R.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2017
卷: 122, 期: 3 起始页码: 1953
结束页码: 1970
语种: 英语
英文关键词: airborne
; nitrogen dioxide
; remote sensing
Scopus关键词: air quality
; airborne survey
; airborne thematic mapper
; atmospheric pollution
; bidirectional reflectance
; chemical pollutant
; model validation
; MODIS
; nitrogen dioxide
; pollution monitoring
; remote sensing
; resolution
; satellite data
; spatial distribution
; spectral analysis
; temporal variation
; Maryland
; United States
英文摘要: Nitrogen dioxide (NO2) is a short-lived atmospheric pollutant that serves as an air quality indicator and is itself a health concern. The Airborne Compact Atmospheric Mapper (ACAM) was flown on board the NASA UC-12 aircraft during the Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality Maryland field campaign in July 2011. The instrument collected hyperspectral remote sensing measurements in the 304–910 nm range, allowing daytime observations of several tropospheric pollutants, including nitrogen dioxide (NO2), at an unprecedented spatial resolution of 1.5 × 1.1 km2. Retrievals of slant column abundance are based on the differential optical absorption spectroscopy method. For the air mass factor computations needed to convert these retrievals to vertical column abundance, we include high-resolution information for the surface reflectivity by using bidirectional reflectance distribution function data from the Moderate Resolution Imaging Spectroradiometer. We use high-resolution simulated vertical distributions of NO2 from the Community Multiscale Air Quality and Global Modeling Initiative models to account for the temporal variation in atmospheric NO2 to retrieve middle and lower tropospheric NO2 columns (NO2 below the aircraft). We compare NO2 derived from ACAM measurements with in situ observations from NASA's P-3B research aircraft, total column observations from the ground-based Pandora spectrometers, and tropospheric column observations from the space-based Ozone Monitoring Instrument. The high-resolution ACAM measurements not only give new insights into our understanding of atmospheric composition and chemistry through observation of subsampling variability in typical satellite and model resolutions, but they also provide opportunities for testing algorithm improvements for forthcoming geostationary air quality missions. ©2017. 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/62703
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: Goddard Earth Sciences Technology and Research, Universities Space Research Association, Columbia, MD, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; RT Solutions, Cambridge, MA, United States; Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States; Air Resources Laboratory, NOAA, College Park, MD, United States; NASA Langley Research Center, Hampton, VA, United States; Applied Physics Laboratory, Johns Hopkins University, Laurel, MD, United States; Joint Center for Earth Systems Technology, University of Maryland Baltimore County, Baltimore, MD, United States
Recommended Citation:
Lamsal L.N.,Janz S.J.,Krotkov N.A.,et al. High-resolution NO2 observations from the Airborne Compact Atmospheric Mapper: Retrieval and validation[J]. Journal of Geophysical Research: Atmospheres,2017-01-01,122(3)