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dc.contributor.advisorFu, Qiangen_US
dc.contributor.authorPo-Chedley, Stephenen_US
dc.date.accessioned2012-09-13T17:40:25Z
dc.date.available2013-09-14T11:05:27Z
dc.date.issued2012-09-13
dc.date.submitted2012en_US
dc.identifier.otherPoChedley_washington_0250O_10392.pdfen_US
dc.identifier.urihttp://hdl.handle.net/1773/20901
dc.descriptionThesis (Master's)--University of Washington, 2012en_US
dc.description.abstractThe University of Alabama at Huntsville (UAH), Remote Sensing Systems (RSS), and the National Oceanic and Atmospheric Administration (NOAA) have constructed long-term temperature records for deep atmospheric layers using satellite microwave sounding unit (MSU) and advanced microwave sounding unit (AMSU) observations. However, these groups disagree on the magnitude of global temperature trends since 1979, including the trend for the mid-tropospheric layer (TMT). This study evaluates the selection of the MSU TMT warm target factor for the NOAA-9 satellite using five homogenized radiosonde products as references. The analysis reveals that the UAH TMT product has a positive bias of 0.051 ± 0.031 in the warm target factor that artificially reduces the global TMT trend by 0.042 K decade<super>−1</super> for 1979 − 2009. Accounting for this bias, we estimate that the global UAH TMT trend should increase from 0.038 K decade<super>−1</super> to 0.080 K decade<super>−1</super>, effectively eliminating the trend difference between UAH and RSS and decreasing the trend difference between UAH and NOAA by 47%. This warm target factor bias directly affects the UAH lower tropospheric (TLT) product and tropospheric temperature trends derived from a combination of TMT and lower stratospheric (TLS) channels.en_US
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_USen_US
dc.rightsCopyright is held by the individual authors.en_US
dc.subjectclimate records; microwave observations; microwave sounding unit; satellite calibration; satellite observations; tropospheric temperature changeen_US
dc.subject.otherRemote sensingen_US
dc.subject.otherClimate changeen_US
dc.subject.otherAtmospheric sciencesen_US
dc.subject.otherAtmospheric sciencesen_US
dc.titleReconciling tropospheric temperature trends from the microwave sounding uniten_US
dc.typeThesisen_US
dc.embargo.termsRestrict to UW for 1 year -- then make Open Accessen_US


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