TY  - JOUR
A1  - Romanowsky, Erik
A1  - Handorf, Dörthe
A1  - Jaiser, Ralf
A1  - Wohltmann, Ingo
A1  - Dorn, Wolfgang
A1  - Ukita, Jinro
A1  - Cohen, Judah
A1  - Dethloff, Klaus
A1  - Rex, Markus
T1  - The role of stratospheric ozone for Arctic-midlatitude linkages
JF  - Scientific reports
N2  - Arctic warming was more pronounced than warming in midlatitudes in the last decades making this region a hotspot of climate change. Associated with this, a rapid decline of sea-ice extent and a decrease of its thickness has been observed. Sea-ice retreat allows for an increased transport of heat and momentum from the ocean up to the tropo- and stratosphere by enhanced upward propagation of planetary-scale atmospheric waves. In the upper atmosphere, these waves deposit the momentum transported, disturbing the stratospheric polar vortex, which can lead to a breakdown of this circulation with the potential to also significantly impact the troposphere in mid- to late-winter and early spring. Therefore, an accurate representation of stratospheric processes in climate models is necessary to improve the understanding of the impact of retreating sea ice on the atmospheric circulation. By modeling the atmospheric response to a prescribed decline in Arctic sea ice, we show that including interactive stratospheric ozone chemistry in atmospheric model calculations leads to an improvement in tropo-stratospheric interactions compared to simulations without interactive chemistry. This suggests that stratospheric ozone chemistry is important for the understanding of sea ice related impacts on atmospheric dynamics.
Y1  - 2019
U6  - https://doi.org/10.1038/s41598-019-43823-1
SN  - 2045-2322
VL  - 9
PB  - Nature Publ. Group
CY  - London
ER  -