In situ and satellite surface temperature records in Antarctica

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dc.contributor.authorShuman, Christopher
dc.contributor.authorComiso, Josefino C.
dc.date.accessioned2022-02-21T15:42:54Z
dc.date.available2022-02-21T15:42:54Z
dc.date.issued2017-09-14
dc.description.abstractAir-temperature records (Tᴀ) during 1992 from five inland Antarctic automatic weather station (AWS) sites were compared with the best available infrared temperatures (Tıʀ) from the Advanced Very High Resolution Radiometer (AVHRR) as well as calibrated passive-microwave temperatures (Tᴄ) from the Special Sensor Microwave/Imager (SSM/I). Daily and monthly average Tᴀ, Tıʀ, and Tᴄ data indicate that each approach captures generally similar trends at each site but each approach also has limitations. AWS Tᴀ data are considered the most accurate but represent spatially restricted areas and may have long gaps due to sensor or transmission problems. AVHRR TIR data have daily variability similar to the TA record but have numerous small gaps due to cloud cover or observation interruptions. An offset between Tᴀ and Tıʀ (>4 K) at the South Pole site was identified that may be due to the inclusion of data with large satellite scan angles necessary to cover this area. SSM/I Tᴄ data have the most continuity but exhibit calibration problems, a significantly damped daily response and do not cover all of Antarctica. Individual daily differences between Tᴀ and Tıʀ as well as Tᴀ and Tᴄ can exceed 17 K, but all sites have mean daily differences of about 1 K or better, after compensating for the offset at South Pole, and standard deviations of <6 K. Monthly temperature differences are typically 5 K or better, with standard deviations generally <3 K. And finally, using the available data, the 1992 average temperature differences are <1 K.en_US
dc.description.sponsorshipWe would like to thank the staff of the Antarctic Automatic Weather Stations Project (http://uwamrc.ssec.wisc.edu/aws/) at the University of Wisconsin and L.V. Stock (CAELUM Research Corp.) for their support. This research was sup ported by U.S. National Science Foundation grant OPP 9526566 and 9904295 and NASA grants MTPE-00027 and NCC5374.en_US
dc.description.urihttps://www.cambridge.org/core/journals/annals-of-glaciology/article/in-situ-and-satellite-surface-temperature-records-in-antarctica/C42A5E8FEFADECCA0B51FF3102B4C3FFen_US
dc.format.extent8 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2b2as-ybsh
dc.identifier.citationShuman, Christopher A., and Josefino C. Comiso. 2002. “In Situ and Satellite Surface Temperature Records in Antarctica.” Annals of Glaciology 34. Cambridge University Press: 113–20. doi:10.3189/172756402781818003.en_US
dc.identifier.urihttps://doi.org/10.3189/172756402781818003
dc.identifier.urihttp://hdl.handle.net/11603/24298
dc.language.isoen_USen_US
dc.publisherCambridge University Pressen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Joint Center for Earth Systems Technology
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.titleIn situ and satellite surface temperature records in Antarcticaen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0001-9606-767Xen_US

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