Flynn, Clare M.Pickering, Kenneth E.Crawford, James H.Lamsal, LokKrotkov, NickolayHerman, JayWeinheimer, AndrewChen, GaoLiu, XiongSzykman, JamesTsay, Si-CheeLoughner, ChristopherHains, JenniferLee, PiusDickerson, Russell R.Stehr, Jeffrey W.Brent, Lacey2023-02-132023-02-132014-04-26"Flynn , Clare M., et al. “Relationship between column-density and surface mixing ratio: Statistical analysis of O₃ and NO₂ data from the July 2011 Maryland DISCOVER-AQ mission” Atmospheric Environment 92 (26 April, 2014): 429-441. https://doi.org/10.1016/j.atmosenv.2014.04.041. "https://doi.org/10.1016/j.atmosenv.2014.04.041http://hdl.handle.net/11603/26813To 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 O₃ 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. O₃ columns typically exhibited a statistically significant and high degree of correlation with surface data (R² > 0.64) in the P-3B data set, a moderate degree of correlation (0.16 < R² < 0.64) in the CMAQ data set, and a low degree of correlation (R² < 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 O₃ exhibited smaller errors relative to the observations than NO₂ regressions. These results suggest that O₃ partial column observations from future satellite instruments with sufficient sensitivity to the lower troposphere can be meaningful for surface air quality analysis.13 pagesen-USThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.Public Domain Mark 1.0http://creativecommons.org/publicdomain/mark/1.0/Text