Regional Responses of the Northern Hemisphere Subtropical Jet Stream to Reduced Arctic Sea Ice Extent
The effect of Arctic sea ice loss on the boreal winter regional trends of wind speed and latitudinal position of the Northern Hemisphere subtropical jet stream (STJ) in 1980–2012 is investigated. Two sets of global simulations with reduced Arctic sea ice extent are analyzed: simulations that, south...
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Online Access: | https://doi.org/10.3390/cli10070108 https://doaj.org/article/6314bb52dae84182a7a0bd4b8a087288 |
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ftdoajarticles:oai:doaj.org/article:6314bb52dae84182a7a0bd4b8a087288 2023-05-15T14:34:29+02:00 Regional Responses of the Northern Hemisphere Subtropical Jet Stream to Reduced Arctic Sea Ice Extent José Luis Rodriguez Solis Cuauhtémoc Turrent Markus Gross 2022-07-01T00:00:00Z https://doi.org/10.3390/cli10070108 https://doaj.org/article/6314bb52dae84182a7a0bd4b8a087288 EN eng MDPI AG https://www.mdpi.com/2225-1154/10/7/108 https://doaj.org/toc/2225-1154 doi:10.3390/cli10070108 2225-1154 https://doaj.org/article/6314bb52dae84182a7a0bd4b8a087288 Climate, Vol 10, Iss 108, p 108 (2022) subtropical jet stream arctic warming global circulation model climate variability Science Q article 2022 ftdoajarticles https://doi.org/10.3390/cli10070108 2022-12-31T02:20:29Z The effect of Arctic sea ice loss on the boreal winter regional trends of wind speed and latitudinal position of the Northern Hemisphere subtropical jet stream (STJ) in 1980–2012 is investigated. Two sets of global simulations with reduced Arctic sea ice extent are analyzed: simulations that, south of 70 N, use a climatological annual cycle of the sea surface temperature (SST) and a second set that uses full SST variability. Results with the climatological SST have a significant but weak response of the STJ wind speed and latitudinal position to the warmer Arctic: the wind speed generally decreases and the jet core is displaced equatorward. However, in the realistic SST simulations, the effect of Arctic warming is only slightly evident in a small equatorward shift of the jet over the Atlantic basin. Over the Pacific basin the STJ is mostly driven by tropical and mid-latitude SST variability, with little influence from the Arctic region. A weakening and poleward shift of the STJ that is observed in the realistic SST simulations over the Pacific basin is attributed to negative SST trends in the tropical Pacific and the consequent weakening of the mid-latitude meridional gradient of geopotential height in the upper troposphere. Article in Journal/Newspaper Arctic Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Pacific Climate 10 7 108 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
subtropical jet stream arctic warming global circulation model climate variability Science Q |
spellingShingle |
subtropical jet stream arctic warming global circulation model climate variability Science Q José Luis Rodriguez Solis Cuauhtémoc Turrent Markus Gross Regional Responses of the Northern Hemisphere Subtropical Jet Stream to Reduced Arctic Sea Ice Extent |
topic_facet |
subtropical jet stream arctic warming global circulation model climate variability Science Q |
description |
The effect of Arctic sea ice loss on the boreal winter regional trends of wind speed and latitudinal position of the Northern Hemisphere subtropical jet stream (STJ) in 1980–2012 is investigated. Two sets of global simulations with reduced Arctic sea ice extent are analyzed: simulations that, south of 70 N, use a climatological annual cycle of the sea surface temperature (SST) and a second set that uses full SST variability. Results with the climatological SST have a significant but weak response of the STJ wind speed and latitudinal position to the warmer Arctic: the wind speed generally decreases and the jet core is displaced equatorward. However, in the realistic SST simulations, the effect of Arctic warming is only slightly evident in a small equatorward shift of the jet over the Atlantic basin. Over the Pacific basin the STJ is mostly driven by tropical and mid-latitude SST variability, with little influence from the Arctic region. A weakening and poleward shift of the STJ that is observed in the realistic SST simulations over the Pacific basin is attributed to negative SST trends in the tropical Pacific and the consequent weakening of the mid-latitude meridional gradient of geopotential height in the upper troposphere. |
format |
Article in Journal/Newspaper |
author |
José Luis Rodriguez Solis Cuauhtémoc Turrent Markus Gross |
author_facet |
José Luis Rodriguez Solis Cuauhtémoc Turrent Markus Gross |
author_sort |
José Luis Rodriguez Solis |
title |
Regional Responses of the Northern Hemisphere Subtropical Jet Stream to Reduced Arctic Sea Ice Extent |
title_short |
Regional Responses of the Northern Hemisphere Subtropical Jet Stream to Reduced Arctic Sea Ice Extent |
title_full |
Regional Responses of the Northern Hemisphere Subtropical Jet Stream to Reduced Arctic Sea Ice Extent |
title_fullStr |
Regional Responses of the Northern Hemisphere Subtropical Jet Stream to Reduced Arctic Sea Ice Extent |
title_full_unstemmed |
Regional Responses of the Northern Hemisphere Subtropical Jet Stream to Reduced Arctic Sea Ice Extent |
title_sort |
regional responses of the northern hemisphere subtropical jet stream to reduced arctic sea ice extent |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/cli10070108 https://doaj.org/article/6314bb52dae84182a7a0bd4b8a087288 |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
Climate, Vol 10, Iss 108, p 108 (2022) |
op_relation |
https://www.mdpi.com/2225-1154/10/7/108 https://doaj.org/toc/2225-1154 doi:10.3390/cli10070108 2225-1154 https://doaj.org/article/6314bb52dae84182a7a0bd4b8a087288 |
op_doi |
https://doi.org/10.3390/cli10070108 |
container_title |
Climate |
container_volume |
10 |
container_issue |
7 |
container_start_page |
108 |
_version_ |
1766307501136936960 |