Nonlinear impact of the Arctic Oscillation on extratropical surface air temperature
The Arctic Oscillation (AO) is the leading climate mode of sea level pressure (SLP) anomalies during cold season in the Northern Hemisphere. To a large extent, the atmospheric climate anomalies associated with positive and negative phases of the AO are opposite to each other, indicating linear impac...
Published in: | Journal of Geophysical Research: Atmospheres |
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Online Access: | https://oceanrep.geomar.de/id/eprint/15141/ https://oceanrep.geomar.de/id/eprint/15141/1/Son_Nonlinear.pdf https://oceanrep.geomar.de/id/eprint/15141/7/Son_et_al-2012-Journal_of_Geophysical_Research__Atmospheres_%281984-2012%29.pdf https://doi.org/10.1029/2012JD018090 |
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ftoceanrep:oai:oceanrep.geomar.de:15141 2023-05-15T14:27:08+02:00 Nonlinear impact of the Arctic Oscillation on extratropical surface air temperature Son, Hye-Young Park, Wonsun Jeong, Jee-Hoon Yeh, Sang-Wook Kim, Baek-Min Kwon, MinHo Kug, Jong-Seong 2012 text https://oceanrep.geomar.de/id/eprint/15141/ https://oceanrep.geomar.de/id/eprint/15141/1/Son_Nonlinear.pdf https://oceanrep.geomar.de/id/eprint/15141/7/Son_et_al-2012-Journal_of_Geophysical_Research__Atmospheres_%281984-2012%29.pdf https://doi.org/10.1029/2012JD018090 en eng AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/15141/1/Son_Nonlinear.pdf https://oceanrep.geomar.de/id/eprint/15141/7/Son_et_al-2012-Journal_of_Geophysical_Research__Atmospheres_%281984-2012%29.pdf Son, H. Y., Park, W. , Jeong, J. H., Yeh, S. W., Kim, B. M., Kwon, M. and Kug, J. S. (2012) Nonlinear impact of the Arctic Oscillation on extratropical surface air temperature. Open Access Journal of Geophysical Research: Atmospheres, 117 . D19102. DOI 10.1029/2012JD018090 <https://doi.org/10.1029/2012JD018090>. doi:10.1029/2012JD018090 info:eu-repo/semantics/openAccess Article PeerReviewed 2012 ftoceanrep https://doi.org/10.1029/2012JD018090 2023-04-07T15:04:57Z The Arctic Oscillation (AO) is the leading climate mode of sea level pressure (SLP) anomalies during cold season in the Northern Hemisphere. To a large extent, the atmospheric climate anomalies associated with positive and negative phases of the AO are opposite to each other, indicating linear impact. However, there is also significant nonlinear relationship between the AO and other winter climate variability. We investigate nonlinear impacts of the AO on surface air temperature (SAT) using reanalysis data and a multi-millennial long climate simulation. It is found that SAT response to the AO, in terms of both spatial pattern and magnitude, is almost linear when the amplitude of the AO is moderate. However, the response becomes quite nonlinear as the amplitude of the AO becomes stronger. First, the pattern shift in SAT depends on AO phase and magnitude, and second, the SAT magnitude depends on AO phase. In particular, these nonlinearities are distinct over the North America and Eurasian Continent. Based on the analyses of model output, we suggest that the nonlinear zonal advection term is one of the critical components in generating nonlinear SAT response, particularly over the North America. Key Points: - We investigate nonlinear impacts of the AO on surface air temperature - The response becomes nonlinear for the strong AO events - The nonlinear advection is a critical component for the nonlinear SAT response Article in Journal/Newspaper Arctic Arctic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Journal of Geophysical Research: Atmospheres 117 D19 n/a n/a |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
The Arctic Oscillation (AO) is the leading climate mode of sea level pressure (SLP) anomalies during cold season in the Northern Hemisphere. To a large extent, the atmospheric climate anomalies associated with positive and negative phases of the AO are opposite to each other, indicating linear impact. However, there is also significant nonlinear relationship between the AO and other winter climate variability. We investigate nonlinear impacts of the AO on surface air temperature (SAT) using reanalysis data and a multi-millennial long climate simulation. It is found that SAT response to the AO, in terms of both spatial pattern and magnitude, is almost linear when the amplitude of the AO is moderate. However, the response becomes quite nonlinear as the amplitude of the AO becomes stronger. First, the pattern shift in SAT depends on AO phase and magnitude, and second, the SAT magnitude depends on AO phase. In particular, these nonlinearities are distinct over the North America and Eurasian Continent. Based on the analyses of model output, we suggest that the nonlinear zonal advection term is one of the critical components in generating nonlinear SAT response, particularly over the North America. Key Points: - We investigate nonlinear impacts of the AO on surface air temperature - The response becomes nonlinear for the strong AO events - The nonlinear advection is a critical component for the nonlinear SAT response |
format |
Article in Journal/Newspaper |
author |
Son, Hye-Young Park, Wonsun Jeong, Jee-Hoon Yeh, Sang-Wook Kim, Baek-Min Kwon, MinHo Kug, Jong-Seong |
spellingShingle |
Son, Hye-Young Park, Wonsun Jeong, Jee-Hoon Yeh, Sang-Wook Kim, Baek-Min Kwon, MinHo Kug, Jong-Seong Nonlinear impact of the Arctic Oscillation on extratropical surface air temperature |
author_facet |
Son, Hye-Young Park, Wonsun Jeong, Jee-Hoon Yeh, Sang-Wook Kim, Baek-Min Kwon, MinHo Kug, Jong-Seong |
author_sort |
Son, Hye-Young |
title |
Nonlinear impact of the Arctic Oscillation on extratropical surface air temperature |
title_short |
Nonlinear impact of the Arctic Oscillation on extratropical surface air temperature |
title_full |
Nonlinear impact of the Arctic Oscillation on extratropical surface air temperature |
title_fullStr |
Nonlinear impact of the Arctic Oscillation on extratropical surface air temperature |
title_full_unstemmed |
Nonlinear impact of the Arctic Oscillation on extratropical surface air temperature |
title_sort |
nonlinear impact of the arctic oscillation on extratropical surface air temperature |
publisher |
AGU (American Geophysical Union) |
publishDate |
2012 |
url |
https://oceanrep.geomar.de/id/eprint/15141/ https://oceanrep.geomar.de/id/eprint/15141/1/Son_Nonlinear.pdf https://oceanrep.geomar.de/id/eprint/15141/7/Son_et_al-2012-Journal_of_Geophysical_Research__Atmospheres_%281984-2012%29.pdf https://doi.org/10.1029/2012JD018090 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic |
genre_facet |
Arctic Arctic |
op_relation |
https://oceanrep.geomar.de/id/eprint/15141/1/Son_Nonlinear.pdf https://oceanrep.geomar.de/id/eprint/15141/7/Son_et_al-2012-Journal_of_Geophysical_Research__Atmospheres_%281984-2012%29.pdf Son, H. Y., Park, W. , Jeong, J. H., Yeh, S. W., Kim, B. M., Kwon, M. and Kug, J. S. (2012) Nonlinear impact of the Arctic Oscillation on extratropical surface air temperature. Open Access Journal of Geophysical Research: Atmospheres, 117 . D19102. DOI 10.1029/2012JD018090 <https://doi.org/10.1029/2012JD018090>. doi:10.1029/2012JD018090 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2012JD018090 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
117 |
container_issue |
D19 |
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n/a |
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_version_ |
1766300742800375808 |