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Investigating the long-term evolution of subtropical ozone profiles applying ground-based FTIR spectrometry

García, Omaira Elena; Schneider, Matthias F.; Redondas, Redondas, Alberto; González, Yenny; Hase, Frank; Blumenstock, Thomas H.; Sepúlveda, Eliezer

Abstract:
This study investigates the long-term evolution of subtropical ozone profile time series (1999–2010) obtained from ground-based FTIR (Fourier Transform InfraRed) spectrometry at the Izaña Observatory ozone super-site. Different ozone retrieval strategies are examined, analysing the influence of an additional temperature retrieval and different constraints. The theoretical assessment reveals that the FTIR system is able to resolve four independent ozone layers with a precision of better than 6% in the troposphere and of better than 3% in the lower, middle and upper stratosphere. This total error includes the smoothing error, which dominates the random error budget. Furthermore, we estimate that the measurement noise as well as uncertainties in the applied atmospheric temperature profiles and instrumental line shape are leading error sources. We show that a simultaneous temperature retrieval can significantly reduce the total random errors and that a regular determination of the instrumental line shape is important for producing a consistent long-term dataset. These theoretical precision estimates are empirically confirmed by daily i ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000068452
Veröffentlicht am 24.05.2018
Originalveröffentlichung
DOI: 10.5194/amt-5-2917-2012
Scopus
Zitationen: 19
Web of Science
Zitationen: 18
Seitenaufrufe: 62
seit 28.04.2018
Downloads: 38
seit 04.06.2018
Zugehörige Institution(en) am KIT Fakultät für Physik (PHYSIK)
Institut für Meteorologie und Klimaforschung - Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Publikationstyp Zeitschriftenaufsatz
Jahr 2012
Sprache Englisch
Identifikator ISSN: 1867-8548, 1867-1381
urn:nbn:de:swb:90-684528
KITopen-ID: 1000068452
HGF-Programm 12.03.01 (POF II, LK 01)
Erschienen in Atmospheric measurement techniques
Band 5
Heft 11
Seiten 2917–2931
Nachgewiesen in Web of Science
Scopus
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