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A method for merging nadir-sounding climate records, with an application to the global-mean stratospheric temperature data sets from SSU and AMSU

McLandress, C.; Shepherd, T.G.; Jonsson, A.I.; Von Clarmann, T.; Funke, B.

A method is proposed for merging different nadirsounding climate data records using measurements from high-resolution limb sounders to provide a transfer function between the different nadir measurements. The two nadirsounding records need not be overlapping so long as the limb-sounding record bridges between them. The method is applied to global-mean stratospheric temperatures from the NOAA Climate Data Records based on the Stratospheric Sounding Unit (SSU) and the Advanced Microwave Sounding Unit-A (AMSU), extending the SSU record forward in time to yield a continuous data set from 1979 to present, and providing a simple framework for extending the SSU record into the future using AMSU. SSU and AMSU are bridged using temperature measurements from the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS), which is of high enough vertical resolution to accurately represent the weighting functions of both SSU and AMSU. For this application, a purely statistical approach is not viable since the different nadir channels are not sufficiently linearly independent, statistically speaking. The near-global-mean linear temperature trends for extended SSU for 1980–2012 are -0.63 ±0.13, -0.71 ±0.15 and -0.80 ±0.17K decade$^{-1}$ (95% confidence) for channels 1, 2 and 3, respectively. ... mehr

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DOI: 10.5445/IR/1000058017
DOI: 10.5194/acp-15-9271-2015
Zitationen: 15
Web of Science
Zitationen: 15
Zitationen: 15
Cover der Publikation
Zugehörige Institution(en) am KIT Fakultät für Physik (PHYSIK)
Institut für Meteorologie und Klimaforschung - Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2015
Sprache Englisch
Identifikator ISSN: 1680-7316, 1680-7324
KITopen-ID: 1000058017
HGF-Programm 12.04.05 (POF III, LK 01) Trends,Variaility,Large-Scale Processes
Erschienen in Atmospheric chemistry and physics
Verlag European Geosciences Union (EGU)
Band 15
Heft 16
Seiten 9271-9284
Nachgewiesen in Dimensions
Web of Science
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