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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ftdoajarticles:oai:doaj.org/article:796da0bdef0b4904b8a796d1f3a8736f 2023-05-15T14:51:36+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 2020-09-01T00:00:00Z https://doi.org/10.3390/atmos11090950 https://doaj.org/article/796da0bdef0b4904b8a796d1f3a8736f EN eng MDPI AG https://www.mdpi.com/2073-4433/11/9/950 https://doaj.org/toc/2073-4433 doi:10.3390/atmos11090950 2073-4433 https://doaj.org/article/796da0bdef0b4904b8a796d1f3a8736f Atmosphere, Vol 11, Iss 950, p 950 (2020) El Niño southern oscillation Arctic Oscillation wintertime temperature East Asia teleconnection East Asian jet Meteorology. Climatology QC851-999 article 2020 ftdoajarticles https://doi.org/10.3390/atmos11090950 2022-12-31T01:01:14Z 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. Article in Journal/Newspaper Arctic Global warming Directory of Open Access Journals: DOAJ Articles Arctic Atmosphere 11 9 950 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
El Niño southern oscillation Arctic Oscillation wintertime temperature East Asia teleconnection East Asian jet Meteorology. Climatology QC851-999 |
spellingShingle |
El Niño southern oscillation Arctic Oscillation wintertime temperature East Asia teleconnection East Asian jet Meteorology. Climatology QC851-999 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 Meteorology. Climatology QC851-999 |
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 |
Article in Journal/Newspaper |
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 |
MDPI AG |
publishDate |
2020 |
url |
https://doi.org/10.3390/atmos11090950 https://doaj.org/article/796da0bdef0b4904b8a796d1f3a8736f |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Global warming |
genre_facet |
Arctic Global warming |
op_source |
Atmosphere, Vol 11, Iss 950, p 950 (2020) |
op_relation |
https://www.mdpi.com/2073-4433/11/9/950 https://doaj.org/toc/2073-4433 doi:10.3390/atmos11090950 2073-4433 https://doaj.org/article/796da0bdef0b4904b8a796d1f3a8736f |
op_doi |
https://doi.org/10.3390/atmos11090950 |
container_title |
Atmosphere |
container_volume |
11 |
container_issue |
9 |
container_start_page |
950 |
_version_ |
1766322729106014208 |