Revisiting observed trends in the jet streams and their link to tropical warming ...
<!--!introduction!--> We revisit observed zonal wind trends using 40 years of satellite-era reanalysis products and find evidence that general poleward shifts are emerging, often with low significance but notable similarity across different seasons and hemispheres. While much recent work has f...
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GFZ German Research Centre for Geosciences
2023
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ftdatacite:10.57757/iugg23-0752 2023-06-11T04:09:25+02:00 Revisiting observed trends in the jet streams and their link to tropical warming ... Woollings, Tim Drouard, Marie O'Reilly, Christopher Sexton, David McSweeney, Carol 2023 https://dx.doi.org/10.57757/iugg23-0752 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016750 unknown GFZ German Research Centre for Geosciences Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 ConferencePaper Oral Article 2023 ftdatacite https://doi.org/10.57757/iugg23-0752 2023-06-01T11:08:47Z <!--!introduction!--> We revisit observed zonal wind trends using 40 years of satellite-era reanalysis products and find evidence that general poleward shifts are emerging, often with low significance but notable similarity across different seasons and hemispheres. While much recent work has focused on the jet response to amplified Arctic warming, the observed trends are more consistent with the known sensitivity of the circulation to tropical warming. The circulation trends are within the range of historical model simulations but are relatively large compared to the models when the accompanying trends in upper tropospheric temperature gradients are considered. The balance between tropical warming and jet shifts should therefore be closely monitored in the near future. We also present a new hypothesis concerning the sensitivity of the circulation response to tropical heating which may be one factor affecting this balance. ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... Conference Object Arctic DataCite Metadata Store (German National Library of Science and Technology) Arctic |
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description |
<!--!introduction!--> We revisit observed zonal wind trends using 40 years of satellite-era reanalysis products and find evidence that general poleward shifts are emerging, often with low significance but notable similarity across different seasons and hemispheres. While much recent work has focused on the jet response to amplified Arctic warming, the observed trends are more consistent with the known sensitivity of the circulation to tropical warming. The circulation trends are within the range of historical model simulations but are relatively large compared to the models when the accompanying trends in upper tropospheric temperature gradients are considered. The balance between tropical warming and jet shifts should therefore be closely monitored in the near future. We also present a new hypothesis concerning the sensitivity of the circulation response to tropical heating which may be one factor affecting this balance. ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
format |
Conference Object |
author |
Woollings, Tim Drouard, Marie O'Reilly, Christopher Sexton, David McSweeney, Carol |
spellingShingle |
Woollings, Tim Drouard, Marie O'Reilly, Christopher Sexton, David McSweeney, Carol Revisiting observed trends in the jet streams and their link to tropical warming ... |
author_facet |
Woollings, Tim Drouard, Marie O'Reilly, Christopher Sexton, David McSweeney, Carol |
author_sort |
Woollings, Tim |
title |
Revisiting observed trends in the jet streams and their link to tropical warming ... |
title_short |
Revisiting observed trends in the jet streams and their link to tropical warming ... |
title_full |
Revisiting observed trends in the jet streams and their link to tropical warming ... |
title_fullStr |
Revisiting observed trends in the jet streams and their link to tropical warming ... |
title_full_unstemmed |
Revisiting observed trends in the jet streams and their link to tropical warming ... |
title_sort |
revisiting observed trends in the jet streams and their link to tropical warming ... |
publisher |
GFZ German Research Centre for Geosciences |
publishDate |
2023 |
url |
https://dx.doi.org/10.57757/iugg23-0752 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016750 |
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_doi |
https://doi.org/10.57757/iugg23-0752 |
_version_ |
1768383285690368000 |