Impact of oceanic mesoscale eddies on the simulation of polar lows ...
<!--!introduction!--> There are plenty of oceanic eddies in the ocean which may have significant influences on tropical and extratropical cyclones. However, the impacts of eddies on polar low (PL) have been rarely investigated. In this study, the influence of oceanic mesoscale eddies on the PL...
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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/iugg23-2083 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018724 |
| Summary: | <!--!introduction!--> There are plenty of oceanic eddies in the ocean which may have significant influences on tropical and extratropical cyclones. However, the impacts of eddies on polar low (PL) have been rarely investigated. In this study, the influence of oceanic mesoscale eddies on the PL simulation is investigated based on a case study and 4 winter-year simulations. The case study shows that the PL was weakened (intensified) when it goes through a cold (warm) eddy. Increasing heat fluxes induced by warm eddy strengthened the secondary circulation of the PL through released condensational diabatic heating, which enhanced PL intensity. The cold eddy would induce the opposite process to decrease PL intensity. Four winter-year simulations with the domain covering the Nordic Sea indicate that oceanic eddies enhance the transfer of water vapour to the atmosphere. Substantially, the oceanic eddies enhance the PL intensity and size statistically, by increasing the condensational latent heating release. ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
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