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Improved ozone monitoring by ground-based FTIR spectrometry

García, Omaira Elena ; Sanromá, Esther; Schneider, Matthias 1; Hase, Frank 1; León-Luis, Sergio Fabián; Blumenstock, Thomas ORCID iD icon 1; Sepúlveda, Eliezer; Redondas, Alberto; Carreño, Virgilio; Torres, Carlos; Prats, Natalia
1 Institut für Meteorologie und Klimaforschung – Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF), Karlsruher Institut für Technologie (KIT)

Abstract:

Accurate observations of atmospheric ozone (O$_3$) are essential to monitor in detail its key role in atmospheric chemistry. The present paper examines the performance of different O$_3$ retrieval strategies from FTIR (Fourier transform infrared) spectrometry by using the 20-year time series of the high-resolution solar spectra acquired from 1999 to 2018 at the subtropical Izaña Observatory (IZO, Spain) within NDACC (Network for the Detection of Atmospheric Composition Change). In particular, the effects of two of the most influential factors have been investigated: the inclusion of a simultaneous atmospheric temperature profile fit and the spectral O$_3$ absorption lines used for the retrievals (the broad spectral region of 1000–1005 cm$_{−1}$ and single micro-windows between 991 and 1014 cm$_{−1}$). Additionally, the water vapour (H$_{2}$O) interference in O$_3$ retrievals has been evaluated, with the aim of providing an improved O$_3$ strategy that minimises its impact and, therefore, could be applied at any NDACC FTIR station under different humidity conditions. The theoretical and experimental quality assessments of the different FTIR O$_3$ products (total column (TC) amounts and volume mixing ratio (VMR) profiles) provide consistent results. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000146518
Veröffentlicht am 18.05.2022
Originalveröffentlichung
DOI: 10.5194/amt-15-2557-2022
Scopus
Zitationen: 3
Web of Science
Zitationen: 3
Dimensions
Zitationen: 4
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 1867-1381, 1867-8548
KITopen-ID: 1000146518
HGF-Programm 12.11.13 (POF IV, LK 01) Long-term trends of global atmospheric composition
Erschienen in Atmospheric Measurement Techniques
Verlag Copernicus Publications
Band 15
Heft 8
Seiten 2557–2577
Vorab online veröffentlicht am 28.04.2022
Nachgewiesen in Web of Science
Scopus
Dimensions
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
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