Impacts of stratospheric polar vortex changes on blockings over the Atlantic-European region ...
<!--!introduction!--> In recent years, frequent extreme weather events associated with the enlargement of atmospheric blocking are recorded in the northern extratropics, with a significant impacting on ecosystems. This study reveals the direct influence of the stratospheric polar vortex on tro...
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| Format: | Conference Object |
| Language: | unknown |
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GFZ German Research Centre for Geosciences
2023
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| Online Access: | https://dx.doi.org/10.57757/iugg23-1959 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017581 |
| Summary: | <!--!introduction!--> In recent years, frequent extreme weather events associated with the enlargement of atmospheric blocking are recorded in the northern extratropics, with a significant impacting on ecosystems. This study reveals the direct influence of the stratospheric polar vortex on tropospheric blocking, especially over the North Atlantic sector, based on both reanalysis data and large ensemble experiment using climate model. It is found that the stratospheric polar vortex intensity can influence both the formation and evolution of the blockings over the Atlantic sector. Under the conditions of weak stratospheric polar vortex, blockings are more likely to be generated over Greenland and move westward, subsequently may affect the weather over North America. Under conditions of strong stratospheric polar vortex, blockings are more likely to be generated and moves eastward, and would affect the weather over Western Europe. The stratospheric polar vortex can modulate synoptic-scale eddy activities, ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
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