Strong sub-seasonal wintertime cooling over East Asia and Northern Europe associated with super El Niño events
East Asia experienced a record-breaking cold event during the 2015/16 boreal winter, with pronounced impacts on livelihood in the region. We find that this large-scale cold spell can be attributed to the concurrent super El Nino event in the tropical Pacific. Our analysis reveals that all super El N...
Published in: | Scientific Reports |
---|---|
Other Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2017
|
Subjects: | |
Online Access: | https://doi.org/10.1038/s41598-017-03977-2 |
id |
ftncar:oai:drupal-site.org:articles_20894 |
---|---|
record_format |
openpolar |
spelling |
ftncar:oai:drupal-site.org:articles_20894 2023-09-05T13:17:28+02:00 Strong sub-seasonal wintertime cooling over East Asia and Northern Europe associated with super El Niño events Geng, Xin (author) Zhang, Wenjun (author) Stuecker, Malte F. (author) Jin, Fei-Fei (author) 2017-12 https://doi.org/10.1038/s41598-017-03977-2 en eng Scientific Reports--Sci Rep--2045-2322 articles:20894 ark:/85065/d7cz39m4 doi:10.1038/s41598-017-03977-2 Copyright 2017 Author(s). Published under license by the Nature Publishing Group. article Text 2017 ftncar https://doi.org/10.1038/s41598-017-03977-2 2023-08-14T18:46:56Z East Asia experienced a record-breaking cold event during the 2015/16 boreal winter, with pronounced impacts on livelihood in the region. We find that this large-scale cold spell can be attributed to the concurrent super El Nino event in the tropical Pacific. Our analysis reveals that all super El Nino winters (1982/83, 1997/98, and 2015/16) were accompanied by a rapid sub-seasonal North Atlantic Oscillation (NAO)/Arctic Oscillation (AO) phase reversal from a positive to a negative state during early January, which was largely caused by the interaction of these super El Nino events with the subtropical jet annual cycle. The NAO/AO phase transition leads to a rapidly strengthened Siberian High, which favors southward intrusions of cold air to East Asia and thus causes severe local cooling. Similar cold spells can also be detected over Northern Europe associated with the fast sub-seasonal NAO/AO phase reversal. Due to the weaker amplitude of the ENSO forcing, these sub-seasonal atmospheric responses cannot be detected for moderate El Nino events. The super El Nino associated sub-seasonal signal of the East Asian and Northern Europe wintertime temperature responses carries important implications for future predictability of regional extreme events. Article in Journal/Newspaper Arctic North Atlantic North Atlantic oscillation OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Arctic Pacific Scientific Reports 7 1 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
East Asia experienced a record-breaking cold event during the 2015/16 boreal winter, with pronounced impacts on livelihood in the region. We find that this large-scale cold spell can be attributed to the concurrent super El Nino event in the tropical Pacific. Our analysis reveals that all super El Nino winters (1982/83, 1997/98, and 2015/16) were accompanied by a rapid sub-seasonal North Atlantic Oscillation (NAO)/Arctic Oscillation (AO) phase reversal from a positive to a negative state during early January, which was largely caused by the interaction of these super El Nino events with the subtropical jet annual cycle. The NAO/AO phase transition leads to a rapidly strengthened Siberian High, which favors southward intrusions of cold air to East Asia and thus causes severe local cooling. Similar cold spells can also be detected over Northern Europe associated with the fast sub-seasonal NAO/AO phase reversal. Due to the weaker amplitude of the ENSO forcing, these sub-seasonal atmospheric responses cannot be detected for moderate El Nino events. The super El Nino associated sub-seasonal signal of the East Asian and Northern Europe wintertime temperature responses carries important implications for future predictability of regional extreme events. |
author2 |
Geng, Xin (author) Zhang, Wenjun (author) Stuecker, Malte F. (author) Jin, Fei-Fei (author) |
format |
Article in Journal/Newspaper |
title |
Strong sub-seasonal wintertime cooling over East Asia and Northern Europe associated with super El Niño events |
spellingShingle |
Strong sub-seasonal wintertime cooling over East Asia and Northern Europe associated with super El Niño events |
title_short |
Strong sub-seasonal wintertime cooling over East Asia and Northern Europe associated with super El Niño events |
title_full |
Strong sub-seasonal wintertime cooling over East Asia and Northern Europe associated with super El Niño events |
title_fullStr |
Strong sub-seasonal wintertime cooling over East Asia and Northern Europe associated with super El Niño events |
title_full_unstemmed |
Strong sub-seasonal wintertime cooling over East Asia and Northern Europe associated with super El Niño events |
title_sort |
strong sub-seasonal wintertime cooling over east asia and northern europe associated with super el niño events |
publishDate |
2017 |
url |
https://doi.org/10.1038/s41598-017-03977-2 |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic North Atlantic North Atlantic oscillation |
genre_facet |
Arctic North Atlantic North Atlantic oscillation |
op_relation |
Scientific Reports--Sci Rep--2045-2322 articles:20894 ark:/85065/d7cz39m4 doi:10.1038/s41598-017-03977-2 |
op_rights |
Copyright 2017 Author(s). Published under license by the Nature Publishing Group. |
op_doi |
https://doi.org/10.1038/s41598-017-03977-2 |
container_title |
Scientific Reports |
container_volume |
7 |
container_issue |
1 |
_version_ |
1776198629913001984 |