Infrared retrievals of dust using AIRS: Comparisons of optical depths and heights derived for a North African dust storm to other collocated EOS A‐Train and surface observations

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dc.contributor.authorDeSouza‐Machado, S.G.
dc.contributor.authorStrow, L.L.
dc.contributor.authorImbiriba, B.
dc.contributor.authorMcCann, K.
dc.contributor.authorHoff, R.M.
dc.contributor.authorHannon, S.E.
dc.contributor.authorMartins, J.V.
dc.contributor.authorTanré, D.
dc.contributor.authorDeuzé, J.L.
dc.contributor.authorDucos, F.
dc.contributor.authorTorres, O.
dc.date.accessioned2018-10-23T13:36:13Z
dc.date.available2018-10-23T13:36:13Z
dc.date.issued2010-08-03
dc.description.abstract[1] AIRS thermal infrared radiance data are used with a fast infrared scattering radiative transfer model to physically retrieve the dust column amount and dust height over both ocean and land. The retrieved optical depths are compared against those retrieved using visible and ultraviolet instruments on the A‐Train, while dust layer heights are evaluated against lidar data. The synergistic use of AIRS data is explored by using dust layer heights constrained by CALIPSO retrievals and coarse mode particle sizes over ocean from PARASOL. Optical depths from AIRS correlate well with those from other instruments over ocean (R ≥ 0.9) and are lower over land when compared to MODIS Deep Blue and OMI retrievals (R ≤ 0.8). AIRS‐derived dust top heights compare favorably with CALIPSO data and can be used to improve OMI optical depth retrievals over a much larger area than CALIPSO can provide. AIRS data can also provide estimates of dust longwave radiative forcing. For the examples examined here, the forcings are estimated to be about +1.5 and +4.5 W/m² per unit visible optical depth over ocean and land, respectively, compared to a shortwave forcing estimate of −50 W/m² over ocean. AIRS dust retrievals are possible day or night, can provide dust column amount information over land or ocean, and are unaffected by areas of the oceans covered by sun glint.en_US
dc.description.sponsorshipThis work was supported by NASA grant NNX08AD34G and by contract NAS1‐99107 for Calipso Science Team support to the NASA Lan gley Research Center. The hardware used in the computational studies is part of the UMBC High Performance Computing Facilit y (HPCF). The facility is supported by the U.S. National Science Foundation through the MRI program (grant CNS– 0821258) and the SCREMS program (grant DMS–0821311), with additional substantial support from the University of Maryland Baltimore County (UMBC). See www.umbc.edu/hpcf’ for more information on HPCF and the projects using its resources.en_US
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2009jd012842en_US
dc.format.extent15 pagesen_US
dc.genrejournal articleen_US
dc.identifierdoi:10.13016/M2HM52P5M
dc.identifier.citationDeSouza‐Machado, S. G., et al. (2010), Infrared retrievals of dust using AIRS: Comparisons of optical depths and heights derived for a North African dust storm to other collocated EOS A‐Train and surface observations, J. Geophys. Res., 115, D15201, doi:10.1029/2009JD012842.en_US
dc.identifier.urihttps://doi.org/10.1029/2009JD012842
dc.identifier.urihttp://hdl.handle.net/11603/11644
dc.language.isoen_USen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Joint Center for Earth Systems Technology
dc.relation.ispartofUMBC Faculty Collection
dc.relation.ispartofUMBC Physics Department
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rights©2018. American Geophysical Union. All Rights Reserved.
dc.subjectdust optical depth retrievalen_US
dc.subjectdust layer height retrievalen_US
dc.subjectinfrareden_US
dc.subjectUMBC High Performance Computing Facility (HPCF)en_US
dc.titleInfrared retrievals of dust using AIRS: Comparisons of optical depths and heights derived for a North African dust storm to other collocated EOS A‐Train and surface observationsen_US
dc.typeTexten_US

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