Comparison of Near-Surface Air Temperatures and MODIS Ice-Surface Temperatures at Summit, Greenland (2008–13)

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dc.contributor.authorShuman, Christopher
dc.contributor.authorHall, Dorothy K.
dc.contributor.authorDiGirolamo, Nicolo E.
dc.contributor.authorMefford, Thomas K.
dc.contributor.authorSchnaubelt, Michael J.
dc.date.accessioned2022-02-15T13:55:31Z
dc.date.available2022-02-15T13:55:31Z
dc.date.issued2014-09-01
dc.description.abstractThe stability of the Moderate Resolution Imaging Spectroradiometer (MODIS) ice-surface temperature (IST) product from Terra was investigated for use as a climate-quality data record. The availability of climate-quality air temperature data Tᴀ from a NOAA observatory at Greenland’s Summit Station has enabled this high-temporal-resolution study of MODIS ISTs. During a >5-yr period (July 2008–August 2013), more than 2500 IST values were compared with ±3-min-average Tᴀ values from NOAA’s primary 2-m temperature sensor. This enabled an expected small offset between air and ice-sheet surface temperatures (Tᴀ > IST) to be investigated over multiple annual cycles. The principal findings of this study show 1) that IST values are slightly colder than the Tᴀ values near freezing but that this offset increases as temperature decreases and 2) that there is a pattern in IST–Tᴀ differences as the solar zenith angle (SoZA) varies annually. This latter result largely explains the progressive offset from the in situ data at colder temperatures but also indicates that the MODIS cloud mask is less accurate approaching and during the polar night. The consistency of the results over each year in this study indicates that MODIS provides a platform for remotely deriving surface temperature data, with the resulting IST data being most compatible with in situ Tᴀ data when the sky is clear and the SoZA is less than ~85°. The ongoing development of the IST dataset should benefit from improved cloud filtering as well as algorithm modifications to account for the progressive offset from Tᴀ at colder temperatures.en_US
dc.description.sponsorshipThe authors thank the support staff at the Greenland Summit Station for helping to provide the in situ data necessary for this study. The TA data were derived from NOAA’s Earth System Re search Laboratory Global Monitoring Division datasets. NASA’s Cryospheric Sciences Program provided funding for the MODIS IST dataset as well as the work performed at NASA Goddard Space Flight Center (GSFC) and at University of Maryland, Baltimore County. Jack Xiong and Brian Wenny of the MODIS Characterization and Support Team at GSFC and George Riggs (Science Sys tems and Applications, Inc., at GSFC), provided addi tional insights on the IST data and MODIS products. We thank the editor and three anonymous reviewers for their comments and guidance that improved the final paper.en_US
dc.description.urihttps://journals.ametsoc.org/view/journals/apme/53/9/jamc-d-14-0023.1.xmlen_US
dc.format.extent10 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m25nvn-o0as
dc.identifier.citationShuman, Christopher A., Dorothy K. Hall, Nicolo E. DiGirolamo, Thomas K. Mefford, and Michael J. Schnaubelt. " Comparison of Near-Surface Air Temperatures and MODIS Ice-Surface Temperatures at Summit, Greenland (2008–13)", Journal of Applied Meteorology and Climatology 53, 9 (2014): 2171-2180, accessed Dec 28, 2021, https://doi.org/10.1175/JAMC-D-14-0023.1en_US
dc.identifier.issnhttps://doi.org/10.1175/JAMC-D-14-0023.1
dc.identifier.urihttp://hdl.handle.net/11603/24273
dc.language.isoen_USen_US
dc.publisherAMSen_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.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.en_US
dc.rightsPublic Domain Mark 1.0*
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleComparison of Near-Surface Air Temperatures and MODIS Ice-Surface Temperatures at Summit, Greenland (2008–13)en_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0001-9606-767Xen_US

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