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R. J. Sica; M. R. M. Izawa; K. A. Walker; C. Boone; S. V. Petelina; P. S. Argall; P. Bernath; G. B. Burns; V. Catoire; R. L. Collins; W. H. Daffer; C. De Clercq; Z. Y. Fan; B. J. Firanski; W. J. R. French; P. Gerard; M. Gerding; J. Granville; J. L. Innis; P. Keckhut; T. Kerzenmacher; A. R. Klekociuk; E. Kyrö; J. C. Lambert; E. J. Llewellyn; G. L. Manney; I. S. McDermid; K. Mizutani; Y. Murayama; C. Piccolo ... view all 38 authors View less authors (2008)
Publisher: Copernicus Publications
Journal: Atmospheric Chemistry and Physics
Languages: English
Types: Article
Subjects: Chemistry, [ SDU.OCEAN ] Sciences of the Universe [physics]/Ocean, Atmosphere, QD1-999, Physics, QC1-999
International audience; 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 2 K in the stratosphere and upper troposphere and 5 K 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 10 K 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.
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