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Ozone hole impacts on surface temperatures under climate change

Braun, Marleen

Abstract (englisch):

The Antarctic ozone hole, caused by human releases of chlorofluorocarbons, plays a major role in driving climate change in the southern hemisphere. Atmospheric temperatures and circulation are affected by the severe ozone loss due to a coupling of atmospheric composition, radiation, and dynamics. The ozone hole leads to a springtime stratospheric cooling and a prolonged persistence of the stratospheric polar vortex. Further, it affects surface climate where changes are characterized by a shift of the midlatitude jet towards higher latitudes that is commonly referred to as a shift of the Southern Annular Mode (SAM) towards its positive phase. This shift is associated with warming and cooling patterns in the southern hemisphere, particularly a cooling of large parts of Antarctica and a warming of the Antarctic Peninsula and Patagonia.
With stratospheric ozone in the path to recovery, the climate impacts associated with the ozone hole are expected to reverse in the future. The concentration of greenhouse gases will, however, continue to increase. Similarly to the ozone hole, rising greenhouse gas concentrations are associated with a shift of the SAM towards its positive phase. ... mehr

Volltext §
DOI: 10.5445/IR/1000137397
Veröffentlicht am 17.09.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Publikationstyp Hochschulschrift
Publikationsdatum 17.09.2021
Sprache Englisch
Identifikator KITopen-ID: 1000137397
HGF-Programm 12.11.25 (POF IV, LK 01) Atmospheric composition and circulation changes
Verlag Karlsruher Institut für Technologie (KIT)
Umfang iv, 133 S.
Art der Arbeit Dissertation
Fakultät Fakultät für Physik (PHYSIK)
Institut Institut für Meteorologie und Klimaforschung – Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Prüfungsdatum 02.07.2021
Projektinformation HAF (HGF, HGF IVF2016 STRATZUK, ZT-I-0003)
Schlagwörter ozone hole, climate change, ICON-ART, SAM, PCA, timeslice experiments
Referent/Betreuer Braesicke, P.
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