Change of the CP ENSO’s role in the occurrence frequency of Arctic daily warming events triggered by Atlantic storms
Abstract Arctic daily warming is gradually garnering the attention of academics. Here we discuss an interdecadal change around the mid-1980s in the role of the Central Pacific El Niño-Southern Oscillation (CP ENSO) in the occurrence frequency of Arctic daily warming events triggered by Atlantic stor...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-07-01
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| Series: | npj Climate and Atmospheric Science |
| Online Access: | https://doi.org/10.1038/s41612-023-00399-y |
| _version_ | 1797778999081959424 |
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| author | Cen Wang Baohua Ren Chengyun Yang Jianqiu Zheng Linwei Jiang |
| author_facet | Cen Wang Baohua Ren Chengyun Yang Jianqiu Zheng Linwei Jiang |
| author_sort | Cen Wang |
| collection | DOAJ |
| description | Abstract Arctic daily warming is gradually garnering the attention of academics. Here we discuss an interdecadal change around the mid-1980s in the role of the Central Pacific El Niño-Southern Oscillation (CP ENSO) in the occurrence frequency of Arctic daily warming events triggered by Atlantic storms in winter (called the Atlantic pattern-Arctic rapid tropospheric daily warming (A-RTDW) event) and the possible mechanism. Before the mid-1980s, the Central Pacific El Niño/La Niña events weakened/strengthened the Iceland Low (IL); the resulting anomalous northerly/southerly at the east of the IL prevented/favored the A-RTDW event occurrence by leading Atlantic storms away from/into the Arctic. Thus, the CP ENSO could affect the occurrence frequency of A-RTDW events by the CP ENSO/IL teleconnection. In contrast, this role hardly exists after the mid-1980s. Before the mid-1980s, the CP ENSO could affect the polar vortex by planetary wave propagation upwards into the stratosphere to create the CP ENSO/IL teleconnection; thereby, the CP ENSO and A-RTDW could establish a connection. However, after the mid-1980s, the planetary wave associated with CP ENSO could not propagate upwards into the stratosphere; thus, the ENSO/IL teleconnection disappears, resulting in CP ENSO having no effect on the occurrence frequency of A-RTDW events. |
| first_indexed | 2024-03-12T23:24:33Z |
| format | Article |
| id | doaj.art-bc87324caafd4bf481b5435919b03dce |
| institution | Directory Open Access Journal |
| issn | 2397-3722 |
| language | English |
| last_indexed | 2024-03-12T23:24:33Z |
| publishDate | 2023-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Climate and Atmospheric Science |
| spelling | doaj.art-bc87324caafd4bf481b5435919b03dce2023-07-16T11:13:22ZengNature Portfolionpj Climate and Atmospheric Science2397-37222023-07-01611810.1038/s41612-023-00399-yChange of the CP ENSO’s role in the occurrence frequency of Arctic daily warming events triggered by Atlantic stormsCen Wang0Baohua Ren1Chengyun Yang2Jianqiu Zheng3Linwei Jiang4School of Earth and Space Sciences, University of Science and Technology of ChinaSchool of Earth and Space Sciences, University of Science and Technology of ChinaSchool of Earth and Space Sciences, University of Science and Technology of ChinaSchool of Earth and Space Sciences, University of Science and Technology of ChinaSchool of Earth and Space Sciences, University of Science and Technology of ChinaAbstract Arctic daily warming is gradually garnering the attention of academics. Here we discuss an interdecadal change around the mid-1980s in the role of the Central Pacific El Niño-Southern Oscillation (CP ENSO) in the occurrence frequency of Arctic daily warming events triggered by Atlantic storms in winter (called the Atlantic pattern-Arctic rapid tropospheric daily warming (A-RTDW) event) and the possible mechanism. Before the mid-1980s, the Central Pacific El Niño/La Niña events weakened/strengthened the Iceland Low (IL); the resulting anomalous northerly/southerly at the east of the IL prevented/favored the A-RTDW event occurrence by leading Atlantic storms away from/into the Arctic. Thus, the CP ENSO could affect the occurrence frequency of A-RTDW events by the CP ENSO/IL teleconnection. In contrast, this role hardly exists after the mid-1980s. Before the mid-1980s, the CP ENSO could affect the polar vortex by planetary wave propagation upwards into the stratosphere to create the CP ENSO/IL teleconnection; thereby, the CP ENSO and A-RTDW could establish a connection. However, after the mid-1980s, the planetary wave associated with CP ENSO could not propagate upwards into the stratosphere; thus, the ENSO/IL teleconnection disappears, resulting in CP ENSO having no effect on the occurrence frequency of A-RTDW events.https://doi.org/10.1038/s41612-023-00399-y |
| spellingShingle | Cen Wang Baohua Ren Chengyun Yang Jianqiu Zheng Linwei Jiang Change of the CP ENSO’s role in the occurrence frequency of Arctic daily warming events triggered by Atlantic storms npj Climate and Atmospheric Science |
| title | Change of the CP ENSO’s role in the occurrence frequency of Arctic daily warming events triggered by Atlantic storms |
| title_full | Change of the CP ENSO’s role in the occurrence frequency of Arctic daily warming events triggered by Atlantic storms |
| title_fullStr | Change of the CP ENSO’s role in the occurrence frequency of Arctic daily warming events triggered by Atlantic storms |
| title_full_unstemmed | Change of the CP ENSO’s role in the occurrence frequency of Arctic daily warming events triggered by Atlantic storms |
| title_short | Change of the CP ENSO’s role in the occurrence frequency of Arctic daily warming events triggered by Atlantic storms |
| title_sort | change of the cp enso s role in the occurrence frequency of arctic daily warming events triggered by atlantic storms |
| url | https://doi.org/10.1038/s41612-023-00399-y |
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