TY  - JOUR
AU  - Blunden, Jessica
AU  - Boyer, Tim
AU  - Grooss, Jens-Uwe
AU  - Müller, Rolf
AU  - Bernhard
AU  - Fioletov
AU  - Ialongo
AU  - Johnsen
AU  - Lakkala
AU  - Manney, G.
TI  - State of the Climate in 2021
JO  - Bulletin of the American Meteorological Society
VL  - 103
IS  - 8
SN  - 0003-0007
CY  - Boston, Mass.
PB  - ASM
M1  - FZJ-2022-04831
SP  - S1 - S465
PY  - 2022
AB  - Past emissions of man-made chlorine-containing substances, such as chlorofluorocarbonsCFCs), have caused substantial chemical depletion of stratospheric ozone (WMO 2018). The resulting ozone loss led to increases of ultraviolet (UV) radiation at Earth’s surface with adverse effectsn human health and the environment (Barnes et al. 2019; EEAP 2019). The chemical destruction of polar ozone occurs within a cold stratospheric cyclone known as the polar vortex, whichorms over the North Pole every winter (WMO 2018). The polar vortex between November 2020nd April 2021 was weakened by a Sudden Stratospheric Warming (SSW; see Sidebar 5.2) event inarly January 2021 that decreased depletion of stratospheric ozone in the Northern Hemisphereuntil at least April. A similar SSW event occurred in January 2013. The progressions of chemicalzone loss in the winters of 2012/13 and 2020/21 are therefore compared below.
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1175/2022BAMSStateoftheClimate.1
UR  - https://juser.fz-juelich.de/record/911571
ER  -