Ozone and water vapor variability in the polar middle atmosphere observed with ground-based microwave radiometers

Abstract ∘  N, 12∘  E) that started in September 2015 and combining MERRA-2 and Aura-MLS datasets, we analyze the interannual behavior and differences in ozone and water vapor and compile climatologies of both trace gases describing the annual variation of ozone and water vapor at polar latitudes. A climatological comparison of the measurements from our ground-based radiometers with reanalysis and satellite data was performed. Overall differences between GROMOS-C and Aura-MLS ozone volume mixing ratio (VMR) climatology are mainly within ± ∘  S, 12∘  E) to investigate interhemispheric differences in the atmospheric compositions. Both trace gases show much more pronounced interannual and seasonal variability in the Northern Hemisphere than in the Southern Hemisphere. We estimate the effective water vapor transport vertical velocities corresponding to upwelling and downwelling periods driven by the residual circulation. In the Northern Hemisphere, the water vapor ascent rate (5 May to 20 June in 2015, 2016, 2017, 2018, and 2021 and 15 April to 31 May in 2019 and 2020) is 3.4 ± - 1 ± - 1 ± - 1 ± - 1 ± ± - 1 from Aura-MLS, respectively. The water vapor transport vertical velocities analysis further reveals a higher variability in the Northern Hemisphere and is suitable to monitor and characterize the evolution of the northern and southern polar dynamics linked to the polar vortex as a function of time and altitude.

Angaben zum Objekt

• Standort: Deutsche Nationalbibliothek Frankfurt am Main
• Umfang: Online-Ressource
• Sprache: Englisch

Verweise und Beziehungen

• Erschienen in: Ozone and water vapor variability in the polar middle atmosphere observed with ground-based microwave radiometers ; volume:23 ; number:16 ; year:2023 ; pages:9137-9159 ; extent:23 ; Atmospheric chemistry and physics ; 23, Heft 16 (2023), 9137-9159 (gesamt 23)

Beteiligte, Orts- und Zeitangaben

• Urheber: Shi, Guochun ; Krochin, Witali ; Sauvageat, Eric ; Stober, Gunter

Weitere Informationen

• DOI: 10.5194/acp-23-9137-2023
• URN: urn:nbn:de:101:1-2023082404265399782642
• Rechteinformation: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Letzte Aktualisierung: 14.08.2025, 11:01 MESZ