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619446 
Journal Article 
Validation of the Atmospheric Chemistry Experiment (ACE) version 2.2 temperature using ground-based and space-borne measurements 
Sica, RJ; Izawa, MRM; Walker, KA; Boone, C; Petelina, SV; Argall, PS; Bernath, P; Burns, GB; Catoire, V; Collins, RL; Daffer, WH; de Clercq, C; Fan, ZY; Firanski, BJ; French, WJR; Gerard, P; Gerding, M; Granville, J; Innis, JL; Keckhut, P 
2008 
Yes 
Atmospheric Chemistry and Physics
ISSN: 1680-7316
EISSN: 1680-7324 
8 
1 
35-62 
An ensemble of space-borne and ground-based instruments has been used to evaluate the quality of the version 2.2 temperature retrievals from the Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS). The agreement of ACE-FTS temperatures with other sensors is typically better than 2K in the stratosphere and upper troposphere and 5K in the lower mesosphere. There is evidence of a systematic high bias (roughly 3-6 K) in the ACE-FTS temperatures in the mesosphere, and a possible systematic low bias (roughly 2 K) in ACE-FTS temperatures near 23 km. Some ACE-FTS temperature profiles exhibit unphysical oscillations, a problem fixed in preliminary comparisons with temperatures derived using the next version of the ACE-FTS retrieval software. Though these relatively large oscillations in temperature can be on the order of 10K in the mesosphere, retrieved volume mixing ratio profiles typically vary by less than a percent or so. Statistical comparisons suggest these oscillations occur in about 10% of the retrieved profiles. Analysis from a set of coincident lidar measurements suggests that the random error in ACE-FTS version 2.2 temperatures has a lower limit of about ±2 K. ABSTRACT FROM AUTHOR Copyright of Atmospheric Chemistry & Physics is the property of European Geosciences Union and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts) 
ATMOSPHERIC chemistry; ASTRONOMY; TEMPERATURE; OSCILLATIONS; SPECTROMETER