Extreme events in a polar warming scenario--a laboratory perspective
We report on a set of laboratory experiments to investigate the effect of Arctic warming on the amplitude and drift speed of the mid-latitude jet stream. Our results show that a progressive decrease of the meridional temperature difference 1) slows down the eastward propagation of the jet stream, 2)...
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Online Access: | https://dx.doi.org/10.48550/arxiv.2108.11865 https://arxiv.org/abs/2108.11865 |
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ftdatacite:10.48550/arxiv.2108.11865 2023-05-15T14:57:11+02:00 Extreme events in a polar warming scenario--a laboratory perspective Rodda, Costanza Harlander, Uwe Vincze, Miklos 2021 https://dx.doi.org/10.48550/arxiv.2108.11865 https://arxiv.org/abs/2108.11865 unknown arXiv Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Atmospheric and Oceanic Physics physics.ao-ph Fluid Dynamics physics.flu-dyn FOS Physical sciences Article CreativeWork article Preprint 2021 ftdatacite https://doi.org/10.48550/arxiv.2108.11865 2022-03-10T14:17:29Z We report on a set of laboratory experiments to investigate the effect of Arctic warming on the amplitude and drift speed of the mid-latitude jet stream. Our results show that a progressive decrease of the meridional temperature difference 1) slows down the eastward propagation of the jet stream, 2) complexifies its structure, and 3) increases the frequency of extreme events. Extreme events and temperature variability show a clear trend in relation to the Arctic warming only at latitudes influenced by the jet stream, whilst such trend reverses in the equatorial region south of the subtropical jet. Despite missing land-sea contrast in the laboratory model, we find similar trends of temperature variability and extreme events in the experimental data and the National Centers for Environmental Prediction (NCEP) reanalysis data. Moreover, our data qualitatively confirm the decrease in temperature variability due to the meridional temperature gradient weakening (which has been proposed recently based on proxy data). Probability distributions are weakly sensitive to changes in the temperature gradient, which can be explained by recent findings using quasigeostrophic models. : 14 pages, 13 figures Article in Journal/Newspaper Arctic DataCite Metadata Store (German National Library of Science and Technology) Arctic |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Atmospheric and Oceanic Physics physics.ao-ph Fluid Dynamics physics.flu-dyn FOS Physical sciences |
spellingShingle |
Atmospheric and Oceanic Physics physics.ao-ph Fluid Dynamics physics.flu-dyn FOS Physical sciences Rodda, Costanza Harlander, Uwe Vincze, Miklos Extreme events in a polar warming scenario--a laboratory perspective |
topic_facet |
Atmospheric and Oceanic Physics physics.ao-ph Fluid Dynamics physics.flu-dyn FOS Physical sciences |
description |
We report on a set of laboratory experiments to investigate the effect of Arctic warming on the amplitude and drift speed of the mid-latitude jet stream. Our results show that a progressive decrease of the meridional temperature difference 1) slows down the eastward propagation of the jet stream, 2) complexifies its structure, and 3) increases the frequency of extreme events. Extreme events and temperature variability show a clear trend in relation to the Arctic warming only at latitudes influenced by the jet stream, whilst such trend reverses in the equatorial region south of the subtropical jet. Despite missing land-sea contrast in the laboratory model, we find similar trends of temperature variability and extreme events in the experimental data and the National Centers for Environmental Prediction (NCEP) reanalysis data. Moreover, our data qualitatively confirm the decrease in temperature variability due to the meridional temperature gradient weakening (which has been proposed recently based on proxy data). Probability distributions are weakly sensitive to changes in the temperature gradient, which can be explained by recent findings using quasigeostrophic models. : 14 pages, 13 figures |
format |
Article in Journal/Newspaper |
author |
Rodda, Costanza Harlander, Uwe Vincze, Miklos |
author_facet |
Rodda, Costanza Harlander, Uwe Vincze, Miklos |
author_sort |
Rodda, Costanza |
title |
Extreme events in a polar warming scenario--a laboratory perspective |
title_short |
Extreme events in a polar warming scenario--a laboratory perspective |
title_full |
Extreme events in a polar warming scenario--a laboratory perspective |
title_fullStr |
Extreme events in a polar warming scenario--a laboratory perspective |
title_full_unstemmed |
Extreme events in a polar warming scenario--a laboratory perspective |
title_sort |
extreme events in a polar warming scenario--a laboratory perspective |
publisher |
arXiv |
publishDate |
2021 |
url |
https://dx.doi.org/10.48550/arxiv.2108.11865 https://arxiv.org/abs/2108.11865 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.48550/arxiv.2108.11865 |
_version_ |
1766329276257271808 |