Modulation of ENSO Teleconnection on the Relationship between Arctic Oscillation and Wintertime Temperature Variation in South Korea
Despite progressing global warming, extreme cold events in East Asia are still occurring frequently with temperature variability enhanced. To understand this situation, it is necessary to determine external and internal climatic factors and their modulation effects that influence regional temperatur...
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ftmdpi:oai:mdpi.com:/2073-4433/11/9/950/ 2023-08-20T04:03:59+02:00 Modulation of ENSO Teleconnection on the Relationship between Arctic Oscillation and Wintertime Temperature Variation in South Korea Sung-Ho Woo Jahyun Choi Jee-Hoon Jeong agris 2020-09-06 application/pdf https://doi.org/10.3390/atmos11090950 EN eng Multidisciplinary Digital Publishing Institute Climatology https://dx.doi.org/10.3390/atmos11090950 https://creativecommons.org/licenses/by/4.0/ Atmosphere; Volume 11; Issue 9; Pages: 950 El Niño southern oscillation Arctic Oscillation wintertime temperature East Asia teleconnection East Asian jet Text 2020 ftmdpi https://doi.org/10.3390/atmos11090950 2023-08-01T00:03:13Z Despite progressing global warming, extreme cold events in East Asia are still occurring frequently with temperature variability enhanced. To understand this situation, it is necessary to determine external and internal climatic factors and their modulation effects that influence regional temperature variability. We found that the positive correlation between Arctic Oscillation (AO) and surface air temperature (SAT) in South Korea during winter is modulated strongly by tropical influences associated with El Niño Southern Oscillation (ENSO). In the case of a negative (positive) SAT anomaly in South Korea during the positive (negative) AO phase, a state that is opposite to the typical relationship between AO and SAT, the tropical sea surface temperature shows a typical negative (positive) ENSO-like pattern. The atmospheric teleconnection associated with the negative (positive) ENSO conditions contributes to a deepening (flattening) of the climatological East Asian trough and an enhancing (weakening) of the East Asian jet, which leads to negative (positive) SAT anomalies in South Korea. This modulation effect is robustly observed in the historical simulations of three different models of CMIP5. Text Arctic Global warming MDPI Open Access Publishing Arctic Atmosphere 11 9 950 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
El Niño southern oscillation Arctic Oscillation wintertime temperature East Asia teleconnection East Asian jet |
spellingShingle |
El Niño southern oscillation Arctic Oscillation wintertime temperature East Asia teleconnection East Asian jet Sung-Ho Woo Jahyun Choi Jee-Hoon Jeong Modulation of ENSO Teleconnection on the Relationship between Arctic Oscillation and Wintertime Temperature Variation in South Korea |
topic_facet |
El Niño southern oscillation Arctic Oscillation wintertime temperature East Asia teleconnection East Asian jet |
description |
Despite progressing global warming, extreme cold events in East Asia are still occurring frequently with temperature variability enhanced. To understand this situation, it is necessary to determine external and internal climatic factors and their modulation effects that influence regional temperature variability. We found that the positive correlation between Arctic Oscillation (AO) and surface air temperature (SAT) in South Korea during winter is modulated strongly by tropical influences associated with El Niño Southern Oscillation (ENSO). In the case of a negative (positive) SAT anomaly in South Korea during the positive (negative) AO phase, a state that is opposite to the typical relationship between AO and SAT, the tropical sea surface temperature shows a typical negative (positive) ENSO-like pattern. The atmospheric teleconnection associated with the negative (positive) ENSO conditions contributes to a deepening (flattening) of the climatological East Asian trough and an enhancing (weakening) of the East Asian jet, which leads to negative (positive) SAT anomalies in South Korea. This modulation effect is robustly observed in the historical simulations of three different models of CMIP5. |
format |
Text |
author |
Sung-Ho Woo Jahyun Choi Jee-Hoon Jeong |
author_facet |
Sung-Ho Woo Jahyun Choi Jee-Hoon Jeong |
author_sort |
Sung-Ho Woo |
title |
Modulation of ENSO Teleconnection on the Relationship between Arctic Oscillation and Wintertime Temperature Variation in South Korea |
title_short |
Modulation of ENSO Teleconnection on the Relationship between Arctic Oscillation and Wintertime Temperature Variation in South Korea |
title_full |
Modulation of ENSO Teleconnection on the Relationship between Arctic Oscillation and Wintertime Temperature Variation in South Korea |
title_fullStr |
Modulation of ENSO Teleconnection on the Relationship between Arctic Oscillation and Wintertime Temperature Variation in South Korea |
title_full_unstemmed |
Modulation of ENSO Teleconnection on the Relationship between Arctic Oscillation and Wintertime Temperature Variation in South Korea |
title_sort |
modulation of enso teleconnection on the relationship between arctic oscillation and wintertime temperature variation in south korea |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2020 |
url |
https://doi.org/10.3390/atmos11090950 |
op_coverage |
agris |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Global warming |
genre_facet |
Arctic Global warming |
op_source |
Atmosphere; Volume 11; Issue 9; Pages: 950 |
op_relation |
Climatology https://dx.doi.org/10.3390/atmos11090950 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/atmos11090950 |
container_title |
Atmosphere |
container_volume |
11 |
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9 |
container_start_page |
950 |
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1774714430065475584 |