Changes in the role of Pacific decadal oscillation on East Asian winter surface temperature
The complex interaction between the Pacific decadal oscillation (PDO) and East Asian winter temperatures remains unclear. This study reveals that since the early 2000s, East Asia has experienced a strengthening of Aleutian low (AL) and Siberian high (SH) during negative PDO phases, leading to an int...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | Environmental Research Letters |
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| Online Access: | https://doi.org/10.1088/1748-9326/adaf45 |
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| author | Doo Young Lee Sang-Wook Yeh Hyein Jeong Hyo-Seok Park |
| author_facet | Doo Young Lee Sang-Wook Yeh Hyein Jeong Hyo-Seok Park |
| author_sort | Doo Young Lee |
| collection | DOAJ |
| description | The complex interaction between the Pacific decadal oscillation (PDO) and East Asian winter temperatures remains unclear. This study reveals that since the early 2000s, East Asia has experienced a strengthening of Aleutian low (AL) and Siberian high (SH) during negative PDO phases, leading to an intensified East Asian winter monsoon (EAWM). The increased pressure gradient between the SH and the AL, driven by warming in the western Pacific associated with the negative PDO phase, has significantly contributed to a shift toward cooling in East Asia (105°–150° E, 20°–50° N) since the early 2000s. Observations and model simulations provide evidence that the enhanced tropical convection in the western Pacific under a negative PDO phase has intensified the atmospheric circulations associated with the EAWM since the early 2000s. Understanding these dynamics is crucial for improving winter temperature forecasts in East Asia. |
| format | Article |
| id | doaj-art-4ecaf721f4814db0a6a9aaecf71948e6 |
| institution | Kabale University |
| issn | 1748-9326 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Letters |
| spelling | doaj-art-4ecaf721f4814db0a6a9aaecf71948e62025-02-07T10:33:57ZengIOP PublishingEnvironmental Research Letters1748-93262025-01-0120202406210.1088/1748-9326/adaf45Changes in the role of Pacific decadal oscillation on East Asian winter surface temperatureDoo Young Lee0https://orcid.org/0000-0002-6129-2241Sang-Wook Yeh1https://orcid.org/0000-0003-4549-1686Hyein Jeong2Hyo-Seok Park3Institute of Ocean and Atmospheric Science (IOAS), Hanyang University , Ansan, Republic of KoreaInstitute of Ocean and Atmospheric Science (IOAS), Hanyang University , Ansan, Republic of Korea; Department of Marine Science and Convergence Engineering, Hanyang University , Ansan, Republic of KoreaInstitute of Ocean and Atmospheric Science (IOAS), Hanyang University , Ansan, Republic of KoreaInstitute of Ocean and Atmospheric Science (IOAS), Hanyang University , Ansan, Republic of Korea; Department of Marine Science and Convergence Engineering, Hanyang University , Ansan, Republic of KoreaThe complex interaction between the Pacific decadal oscillation (PDO) and East Asian winter temperatures remains unclear. This study reveals that since the early 2000s, East Asia has experienced a strengthening of Aleutian low (AL) and Siberian high (SH) during negative PDO phases, leading to an intensified East Asian winter monsoon (EAWM). The increased pressure gradient between the SH and the AL, driven by warming in the western Pacific associated with the negative PDO phase, has significantly contributed to a shift toward cooling in East Asia (105°–150° E, 20°–50° N) since the early 2000s. Observations and model simulations provide evidence that the enhanced tropical convection in the western Pacific under a negative PDO phase has intensified the atmospheric circulations associated with the EAWM since the early 2000s. Understanding these dynamics is crucial for improving winter temperature forecasts in East Asia.https://doi.org/10.1088/1748-9326/adaf45Pacific decadal oscillationEast Asian winter temperaturesAleutian lowSiberian high |
| spellingShingle | Doo Young Lee Sang-Wook Yeh Hyein Jeong Hyo-Seok Park Changes in the role of Pacific decadal oscillation on East Asian winter surface temperature Environmental Research Letters Pacific decadal oscillation East Asian winter temperatures Aleutian low Siberian high |
| title | Changes in the role of Pacific decadal oscillation on East Asian winter surface temperature |
| title_full | Changes in the role of Pacific decadal oscillation on East Asian winter surface temperature |
| title_fullStr | Changes in the role of Pacific decadal oscillation on East Asian winter surface temperature |
| title_full_unstemmed | Changes in the role of Pacific decadal oscillation on East Asian winter surface temperature |
| title_short | Changes in the role of Pacific decadal oscillation on East Asian winter surface temperature |
| title_sort | changes in the role of pacific decadal oscillation on east asian winter surface temperature |
| topic | Pacific decadal oscillation East Asian winter temperatures Aleutian low Siberian high |
| url | https://doi.org/10.1088/1748-9326/adaf45 |
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