The Importance of Greenland in Setting the Northern Preferred Position of the North Atlantic Eddy-Driven Jet
The North Atlantic atmospheric eddy-driven jet exhibits three “preferred positions,” latitudes where the maximum jet speed occurs more frequently than others. Using an atmospheric general circulation model, Whole Atmospheric Community Climate Model, we explore the extent to which different mountain...
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ftzenodo:oai:zenodo.org:4091768 2024-09-15T18:08:18+00:00 The Importance of Greenland in Setting the Northern Preferred Position of the North Atlantic Eddy-Driven Jet White, Rachel H. Hilgenbrink, Casey Sheshadri, Aditi 2019-12-06 https://doi.org/10.1029/2019GL084780 eng eng Zenodo https://zenodo.org/communities/eu https://doi.org/10.1029/2019GL084780 oai:zenodo.org:4091768 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode Geophysical Research Letters, (2019-12-06) Atlantic jet topography climate info:eu-repo/semantics/article 2019 ftzenodo https://doi.org/10.1029/2019GL084780 2024-07-27T04:34:30Z The North Atlantic atmospheric eddy-driven jet exhibits three “preferred positions,” latitudes where the maximum jet speed occurs more frequently than others. Using an atmospheric general circulation model, Whole Atmospheric Community Climate Model, we explore the extent to which different mountain ranges affect the northern preferred position. The latitude of this preferred position changes only when the latitude of Greenland is changed, and the preferred position disappears when Greenland orography is flattened.We propose that “Greenland tip jet events” create the appearance of a northern “preferred position” in the eddy-driven jet; tip jets are localized zonal jets east of the southern tip of Greenland, created by flow interacting with Greenland orography. In reanalysis data the northern preferred position is strongly associated with tip jet days. A case study with the CAM4 model suggests that biases in the northern preferred position may stem from biases in the position or strength of the climatological eddy-driven jet. Article in Journal/Newspaper Greenland North Atlantic Zenodo Geophysical Research Letters 46 23 14126 14134 |
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op_collection_id |
ftzenodo |
language |
English |
topic |
Atlantic jet topography climate |
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Atlantic jet topography climate White, Rachel H. Hilgenbrink, Casey Sheshadri, Aditi The Importance of Greenland in Setting the Northern Preferred Position of the North Atlantic Eddy-Driven Jet |
topic_facet |
Atlantic jet topography climate |
description |
The North Atlantic atmospheric eddy-driven jet exhibits three “preferred positions,” latitudes where the maximum jet speed occurs more frequently than others. Using an atmospheric general circulation model, Whole Atmospheric Community Climate Model, we explore the extent to which different mountain ranges affect the northern preferred position. The latitude of this preferred position changes only when the latitude of Greenland is changed, and the preferred position disappears when Greenland orography is flattened.We propose that “Greenland tip jet events” create the appearance of a northern “preferred position” in the eddy-driven jet; tip jets are localized zonal jets east of the southern tip of Greenland, created by flow interacting with Greenland orography. In reanalysis data the northern preferred position is strongly associated with tip jet days. A case study with the CAM4 model suggests that biases in the northern preferred position may stem from biases in the position or strength of the climatological eddy-driven jet. |
format |
Article in Journal/Newspaper |
author |
White, Rachel H. Hilgenbrink, Casey Sheshadri, Aditi |
author_facet |
White, Rachel H. Hilgenbrink, Casey Sheshadri, Aditi |
author_sort |
White, Rachel H. |
title |
The Importance of Greenland in Setting the Northern Preferred Position of the North Atlantic Eddy-Driven Jet |
title_short |
The Importance of Greenland in Setting the Northern Preferred Position of the North Atlantic Eddy-Driven Jet |
title_full |
The Importance of Greenland in Setting the Northern Preferred Position of the North Atlantic Eddy-Driven Jet |
title_fullStr |
The Importance of Greenland in Setting the Northern Preferred Position of the North Atlantic Eddy-Driven Jet |
title_full_unstemmed |
The Importance of Greenland in Setting the Northern Preferred Position of the North Atlantic Eddy-Driven Jet |
title_sort |
importance of greenland in setting the northern preferred position of the north atlantic eddy-driven jet |
publisher |
Zenodo |
publishDate |
2019 |
url |
https://doi.org/10.1029/2019GL084780 |
genre |
Greenland North Atlantic |
genre_facet |
Greenland North Atlantic |
op_source |
Geophysical Research Letters, (2019-12-06) |
op_relation |
https://zenodo.org/communities/eu https://doi.org/10.1029/2019GL084780 oai:zenodo.org:4091768 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.1029/2019GL084780 |
container_title |
Geophysical Research Letters |
container_volume |
46 |
container_issue |
23 |
container_start_page |
14126 |
op_container_end_page |
14134 |
_version_ |
1810445635080421376 |