Recent changes in the subseasonal influence of the Western Pacific pattern on winter temperature over South Korea
Bibliographic Data
| ID | 15548937 |
|---|---|
| Authors | Suyeon Moon (0000-0001-5940-9589, APEC Climate Center, corresponding author), Seul-Hee Im (APEC Climate Center), Ok-Yeon Kim (0000-0001-5679-0468, APEC Climate Center), OkYeon Kim, Woo‐Seop Lee (0000-0003-1677-1929, APEC Climate Center) |
| Year | 2025 |
| Volume | 20 |
| Issue | 8 |
| Pages | 084038-084038 |
| Publication date | 2025-06-26 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Environmental Research Letters (JOURNAL) |
| Journal identifiers | ISSN: 1748-9326 • E-ISSN: 1748-9326 |
| Publisher | IOP Publishing (PUBLISHER • GB) |
| DOI | 10.1088/1748-9326/ade897 |
| OpenAlex | W4411682816 |
| Language | EN |
| References cited | 47 |
The Western Pacific (WP) pattern is a crucial driver of mid-latitude teleconnections in the Northern Hemisphere, strongly influencing East Asian winter temperatures. Although its seasonal impacts are well established, its subseasonal variability and long-term changes remain less understood. This study identifies significant changes in the influence of WP on surface temperature over South Korea since the mid-1990s using observational and reanalysis datasets. Our analysis reveals a significant shift in the WP teleconnection, with its influence strengthening in December but weakening in January and February. This change is attributed to an anomalous displacement of the WP-associated anticyclone and modulated by interactions with the Arctic Oscillation. Furthermore, seasonal forecast models from the Asia–Pacific Economic Cooperation Climate Center multi-model ensemble capture the WP-induced temperature variations in December; however, strong modulation by El Niño–Southern Oscillation inhibits the independent effect of the WP teleconnection. These findings highlight the critical gaps in seasonal forecast models and emphasize the need for improved representations of WP teleconnections in subseasonal forecasts. A refined understanding of winter temperature variability is essential for enhancing climate predictions, supporting climate adaptation strategies, and mitigating societal risks associated with increasing winter temperature variability in South Korea
Climatology · Geography · Meteorology · Environmental Science · Marine and Coastal Research · Geology
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The JRA-55 Reanalysis
The Modern-Era Retrospective Analysis for Research and Applications, Version 2 (Merra-2)
The ERA5 global reanalysis
The western Pacific pattern precursor of major stratospheric sudden warmings and the Enso modulation
On the observed connection between Arctic sea ice and Eurasian snow in relation to the winter North Atlantic Oscillation
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The roles of global warming and Arctic Oscillation in the winter 2020 extremes in East Asia
Inconsistent Enso teleconnections over East Asia in early and late winter
| Highly cited | No |
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