A multi-sensor upper tropospheric ozone product (MUTOP) based on TES ozone and GOES water vapor: validation with ozonesondes

dc.contributor.authorMoody, J. L.
dc.contributor.authorFelker, S. R.
dc.contributor.authorWimmers, A. J.
dc.contributor.authorOsterman, G.
dc.contributor.authorBowman, K.
dc.contributor.authorThompson, Anne M.
dc.contributor.authorTarasick, D. W.
dc.date.accessioned2024-07-12T14:57:27Z
dc.date.available2024-07-12T14:57:27Z
dc.date.issued2012-06-29
dc.description.abstractAccurate representation of ozone in the extratropical upper troposphere (UT) remains a challenge. However, the implementation of hyper-spectral remote sensing using satellite instruments such as the Tropospheric Emission Spectrometer (TES) provides an avenue for mapping ozone in this region, from 500 to 300 hPa. As a polar orbiting satellite TES observations are limited, but in this paper they are combined with geostationary satellite observations of water vapor. This paper describes a validation of the Multi-sensor UT Ozone Product (MUTOP). MUTOP, based on a statistical retrieval method, is an image product derived from the multiple regression of remotely sensed TES ozone, against geostationary (GOES) specific humidity (remotely sensed) and potential vorticity (a modeled dynamical tracer in the UT). These TES-derived UT ozone mixing ratios are compared to coincident ozonesonde measurements of layer-average UT ozone mixing ratios made during the NASA INTEX/B field campaign in the spring of 2006; the region for this study is effectively the GOES west domain covering the eastern North Pacific Ocean and the western United States. This intercomparison evaluates MUTOP skill at representing ozone magnitude and variability in this region of complex dynamics. In total, 11 ozonesonde launch sites were available for this study, providing 127 individual sondes for comparison; the overall mean ozone of the 500–300 hPa layer for these sondes was 78.0 ppbv. MUTOP reproduces in~situ measurements reasonably well, producing an UT mean of 82.3 ppbv, with a mean absolute error of 12.2 ppbv and a root mean square error of 16.4 ppbv relative to ozonesondes across all sites. An overall UT mean bias of 4.3 ppbv relative to sondes was determined for MUTOP. Considered in the context of past TES validation studies, these results illustrate that MUTOP is able to maintain accuracy similar to TES while expanding coverage to the entire GOES-West satellite domain. In addition MUTOP provides six-hour temporal resolution throughout the INTEX-B study period, making the visualization of UT ozone dynamics possible. This paper presents the overall statistical validation as well as a selection of ozonesonde case studies. The case studies illustrate that error may not always represent a lack of TES-derived product skill, but often results from discrepancies driven by observations made in the presence of strong meteorological gradients.
dc.description.sponsorshipUVA participation in the INTEX/B field program was supported by NASA (award NNG06GA93G). We thank the UCAR Unidata program for support accessing near real-time GOES imagery and GFS model analyses. We thank two anonymous reviewers and the editor for helpful comments.
dc.description.urihttps://acp.copernicus.org/articles/12/5661/2012/
dc.format.extent16 pages
dc.genrejournal articles
dc.identifierdoi:10.13016/m2brrr-wsdo
dc.identifier.citationMoody, J. L., S. R. Felker, A. J. Wimmers, G. Osterman, K. Bowman, A. M. Thompson, and D. W. Tarasick. “A Multi-Sensor Upper Tropospheric Ozone Product (MUTOP) Based on TES Ozone and GOES Water Vapor: Validation with Ozonesondes.” Atmospheric Chemistry and Physics 12, no. 12 (June 29, 2012): 5661–76. https://doi.org/10.5194/acp-12-5661-2012.
dc.identifier.urihttps://doi.org/10.5194/acp-12-5661-2012
dc.identifier.urihttp://hdl.handle.net/11603/34892
dc.language.isoen_US
dc.publisherEGU
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC GESTAR II
dc.rightsThis 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.
dc.rightsPublic Domain
dc.rights.urihttps://creativecommons.org/publicdomain/mark/1.0/
dc.titleA multi-sensor upper tropospheric ozone product (MUTOP) based on TES ozone and GOES water vapor: validation with ozonesondes
dc.typeText
dcterms.creatorhttps://orcid.org/0000-0002-7829-0920

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