Potential Vorticity Dynamics Explain How Extratropical Oceans and the Arctic Modulate Wintertime Land‐Temperature Variations
Abstract Temperature variations across the continental northern hemisphere at the interdecadal scale are thought to be remotely modulated by oceanic internal climate variability and the Arctic. Nevertheless, further elucidating the dynamics is essential for clarifying ongoing debates. We show that p...
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ftdoajarticles:oai:doaj.org/article:7cd3fac602cd4e27ab023f8ce8c17c4c 2023-05-15T14:42:02+02:00 Potential Vorticity Dynamics Explain How Extratropical Oceans and the Arctic Modulate Wintertime Land‐Temperature Variations Yongkun Xie Jianping Huang Guoxiong Wu Yimin Liu 2023-02-01T00:00:00Z https://doi.org/10.1029/2022EF003275 https://doaj.org/article/7cd3fac602cd4e27ab023f8ce8c17c4c EN eng Wiley https://doi.org/10.1029/2022EF003275 https://doaj.org/toc/2328-4277 2328-4277 doi:10.1029/2022EF003275 https://doaj.org/article/7cd3fac602cd4e27ab023f8ce8c17c4c Earth's Future, Vol 11, Iss 2, Pp n/a-n/a (2023) land‐temperature variations wintertime extratropical oceans the Arctic dynamics potential vorticity Environmental sciences GE1-350 Ecology QH540-549.5 article 2023 ftdoajarticles https://doi.org/10.1029/2022EF003275 2023-02-26T01:27:39Z Abstract Temperature variations across the continental northern hemisphere at the interdecadal scale are thought to be remotely modulated by oceanic internal climate variability and the Arctic. Nevertheless, further elucidating the dynamics is essential for clarifying ongoing debates. We show that potential vorticity (PV) dynamics provide a concise explanation for these teleconnections. Our findings demonstrate that extratropical oceans and the Arctic can remotely modulate the wintertime continental temperature variations by stimulating PV anomalies, which are constrained by climatological PV gradients and jet streams. A causal explanation includes anomalous temperature and precipitation over oceans and the Arctic inducing local PV anomalies via diabatic heating. Subsequently, meridional and downstream advection distributes the anomalous PV to remote land regions where the climatological PV gradients are strong, that is, involving PV fronts, as well as jet streams; therefore, PV fronts and jet streams jointly indicate land regions that are largely and frequently impacted. However, land can also modulate other regions through the same mechanism when variations over land occur in advance. Clear causality depends on which factor is independent, while interactions among those regions may convolute the causality, thereby causing further debates. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Earth's Future 11 2 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
land‐temperature variations wintertime extratropical oceans the Arctic dynamics potential vorticity Environmental sciences GE1-350 Ecology QH540-549.5 |
spellingShingle |
land‐temperature variations wintertime extratropical oceans the Arctic dynamics potential vorticity Environmental sciences GE1-350 Ecology QH540-549.5 Yongkun Xie Jianping Huang Guoxiong Wu Yimin Liu Potential Vorticity Dynamics Explain How Extratropical Oceans and the Arctic Modulate Wintertime Land‐Temperature Variations |
topic_facet |
land‐temperature variations wintertime extratropical oceans the Arctic dynamics potential vorticity Environmental sciences GE1-350 Ecology QH540-549.5 |
description |
Abstract Temperature variations across the continental northern hemisphere at the interdecadal scale are thought to be remotely modulated by oceanic internal climate variability and the Arctic. Nevertheless, further elucidating the dynamics is essential for clarifying ongoing debates. We show that potential vorticity (PV) dynamics provide a concise explanation for these teleconnections. Our findings demonstrate that extratropical oceans and the Arctic can remotely modulate the wintertime continental temperature variations by stimulating PV anomalies, which are constrained by climatological PV gradients and jet streams. A causal explanation includes anomalous temperature and precipitation over oceans and the Arctic inducing local PV anomalies via diabatic heating. Subsequently, meridional and downstream advection distributes the anomalous PV to remote land regions where the climatological PV gradients are strong, that is, involving PV fronts, as well as jet streams; therefore, PV fronts and jet streams jointly indicate land regions that are largely and frequently impacted. However, land can also modulate other regions through the same mechanism when variations over land occur in advance. Clear causality depends on which factor is independent, while interactions among those regions may convolute the causality, thereby causing further debates. |
format |
Article in Journal/Newspaper |
author |
Yongkun Xie Jianping Huang Guoxiong Wu Yimin Liu |
author_facet |
Yongkun Xie Jianping Huang Guoxiong Wu Yimin Liu |
author_sort |
Yongkun Xie |
title |
Potential Vorticity Dynamics Explain How Extratropical Oceans and the Arctic Modulate Wintertime Land‐Temperature Variations |
title_short |
Potential Vorticity Dynamics Explain How Extratropical Oceans and the Arctic Modulate Wintertime Land‐Temperature Variations |
title_full |
Potential Vorticity Dynamics Explain How Extratropical Oceans and the Arctic Modulate Wintertime Land‐Temperature Variations |
title_fullStr |
Potential Vorticity Dynamics Explain How Extratropical Oceans and the Arctic Modulate Wintertime Land‐Temperature Variations |
title_full_unstemmed |
Potential Vorticity Dynamics Explain How Extratropical Oceans and the Arctic Modulate Wintertime Land‐Temperature Variations |
title_sort |
potential vorticity dynamics explain how extratropical oceans and the arctic modulate wintertime land‐temperature variations |
publisher |
Wiley |
publishDate |
2023 |
url |
https://doi.org/10.1029/2022EF003275 https://doaj.org/article/7cd3fac602cd4e27ab023f8ce8c17c4c |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Earth's Future, Vol 11, Iss 2, Pp n/a-n/a (2023) |
op_relation |
https://doi.org/10.1029/2022EF003275 https://doaj.org/toc/2328-4277 2328-4277 doi:10.1029/2022EF003275 https://doaj.org/article/7cd3fac602cd4e27ab023f8ce8c17c4c |
op_doi |
https://doi.org/10.1029/2022EF003275 |
container_title |
Earth's Future |
container_volume |
11 |
container_issue |
2 |
_version_ |
1766313699353559040 |