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Exploring ozone variability in the upper troposphere and lower stratosphere using dynamical coordinates

Millán, Luis F. ; Hoor, Peter; Hegglin, Michaela I.; Manney, Gloria L.; Boenisch, Harald 1; Jeffery, Paul; Kunkel, Daniel; Petropavlovskikh, Irina; Ye, Hao; Leblanc, Thierry; Walker, Kaley
1 Institut für Meteorologie und Klimaforschung (IMK), Karlsruher Institut für Technologie (KIT)

Abstract:

Ozone trends in the upper troposphere and lower stratosphere (UTLS) remain highly uncertain because of sharp spatial gradients and high variability caused by competing transport, chemical, and mixing processes near the upper-tropospheric jets and extratropical tropopause as well as inhomogeneous spatially and temporally limited observations of the region. Subtropical jets and the tropopause act as transport barriers, delineating boundaries between atmospheric regimes controlled by different processes; they can thus be used to separate data taken in those different regimes for numerous purposes, including trend assessment. As part of the Observed Composition Trends And Variability in the UTLS (OCTAV-UTLS) Stratosphere-troposphere Pro-
cesses And their Role in Climate (SPARC) activity, we assess the effectiveness of several coordinate systems in segregating air into different atmospheric regimes. To achieve this, a comprehensive dynamical dataset is used to reference every measurement from various observing systems to the locations of jets and tropopauses in different coordinates (e.g., altitude, pressure, potential temperature, latitude, and equivalent latitude). ... mehr

Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung Atmosphärische Spurengase und Fernerkundung (IMKASF)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2024
Sprache Englisch
Identifikator ISSN: 1680-7316, 1680-7324
KITopen-ID: 1000172890
HGF-Programm 12.11.13 (POF IV, LK 01) Long-term trends of global atmospheric composition
Erschienen in Atmospheric Chemistry and Physics
Verlag European Geosciences Union (EGU)
Band 24
Heft 13
Seiten 7927 – 7959
Vorab online veröffentlicht am 11.07.2024
Nachgewiesen in Web of Science
Scopus
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Verlagsausgabe §
DOI: 10.5445/IR/1000172890
Veröffentlicht am 02.08.2024
Originalveröffentlichung
DOI: 10.5194/acp-24-7927-2024
Scopus
Zitationen: 1
Dimensions
Zitationen: 1
Seitenaufrufe: 35
seit 02.08.2024
Downloads: 7
seit 11.08.2024
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