期刊
ATMOSPHERIC ENVIRONMENT
卷 92, 期 -, 页码 429-441出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.atmosenv.2014.04.041
关键词
Ozone; Nitrogen oxides; DISCOVER-AQ; Column-surface relationship; Aircraft measurement campaign; Measurement-model comparison
资金
- NASA Earth Venture-1 DISCOVER-AQ project [NNX10AR39G]
To investigate the ability of column (or partial column) information to represent surface air quality, results of linear regression analyses between surface mixing ratio data and column abundances for O-3 and NO2 are presented for the July 2011 Maryland deployment of the DISCOVER-AQ mission. Data collected by the P-3B aircraft, ground-based Pandora spectrometers, Aura/OMI satellite instrument, and simulations for July 2011 from the CMAQ air quality model during this deployment provide a large and varied data set, allowing this problem to be approached from multiple perspectives. O-3 columns typically exhibited a statistically significant and high degree of correlation with surface data (R-2 > 0.64) in the P-3B data set, a moderate degree of correlation (0.16 < R-2 < 0.64) in the CMAQ data set, and a low degree of correlation (R-2 < 0.16) in the Pandora and OMI data sets. NO2 columns typically exhibited a low to moderate degree of correlation with surface data in each data set. The results of linear regression analyses for O-3 exhibited smaller errors relative to the observations than NO2 regressions. These results suggest that O-3 partial column observations from future satellite instruments with sufficient sensitivity to the lower troposphere can be meaningful for surface air quality analysis. (C) 2014 Elsevier Ltd. All rights reserved.
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