Differing mechanisms for the 2008 and 2016 wintertime cold events in southern China
Abstract Southern China was hit by a severe cold event during January 21–25, 2016, characteristic of a drastic and sudden temperature drop, with new records of low temperatures set in widespread areas. This cold event was dynamically linked to the activity of the Arctic oscillation (AO) whose evolut...
Published in: | International Journal of Climatology |
---|---|
Main Authors: | , , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2020
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/joc.6498 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.6498 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6498 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6498 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6498 |
id |
crwiley:10.1002/joc.6498 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/joc.6498 2024-09-30T14:31:24+00:00 Differing mechanisms for the 2008 and 2016 wintertime cold events in southern China Liao, Zhen Zhai, Panmao Chen, Yang Lu, Hong National Key Research and Development Program of China National Natural Science Foundation of China 2020 http://dx.doi.org/10.1002/joc.6498 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.6498 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6498 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6498 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6498 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 40, issue 11, page 4944-4955 ISSN 0899-8418 1097-0088 journal-article 2020 crwiley https://doi.org/10.1002/joc.6498 2024-09-11T04:14:44Z Abstract Southern China was hit by a severe cold event during January 21–25, 2016, characteristic of a drastic and sudden temperature drop, with new records of low temperatures set in widespread areas. This cold event was dynamically linked to the activity of the Arctic oscillation (AO) whose evolution led the event by about 2 weeks. Different from this short lasting but intense cold event in 2016, another cold event in the 2008 winter lasted much longer and occurred in tandem with freezing precipitation. Their differences in the duration and precipitation are essentially determined by differing behaviours of blocking highs at mid–high latitudes, the India–Burma Trough and the western Pacific subtropical high. The rapid southward invasion of cold air masses during the 2016 event resulted from the rapid decay of the blocking high, which emanated wave energies downstream and likewise lost wave energies to the local mean flow. By contrast, during the 2008 cold event, continuous upstream wave energy dispersion recurrently stimulated disturbances in the blocking domain, which then extracted energies from the mean flow efficiently to survive markedly longer. Moreover, in the 2008 case, the deepening of the India–Burma Trough and the westward extension of the western Pacific subtropical high jointly enhanced the moisture transport, leading to the freezing rain. This favourable configuration for precipitation was absent in the 2016 case, dictating its dry nature accordingly. Article in Journal/Newspaper Arctic Wiley Online Library Arctic Pacific International Journal of Climatology 40 11 4944 4955 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Southern China was hit by a severe cold event during January 21–25, 2016, characteristic of a drastic and sudden temperature drop, with new records of low temperatures set in widespread areas. This cold event was dynamically linked to the activity of the Arctic oscillation (AO) whose evolution led the event by about 2 weeks. Different from this short lasting but intense cold event in 2016, another cold event in the 2008 winter lasted much longer and occurred in tandem with freezing precipitation. Their differences in the duration and precipitation are essentially determined by differing behaviours of blocking highs at mid–high latitudes, the India–Burma Trough and the western Pacific subtropical high. The rapid southward invasion of cold air masses during the 2016 event resulted from the rapid decay of the blocking high, which emanated wave energies downstream and likewise lost wave energies to the local mean flow. By contrast, during the 2008 cold event, continuous upstream wave energy dispersion recurrently stimulated disturbances in the blocking domain, which then extracted energies from the mean flow efficiently to survive markedly longer. Moreover, in the 2008 case, the deepening of the India–Burma Trough and the westward extension of the western Pacific subtropical high jointly enhanced the moisture transport, leading to the freezing rain. This favourable configuration for precipitation was absent in the 2016 case, dictating its dry nature accordingly. |
author2 |
National Key Research and Development Program of China National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Liao, Zhen Zhai, Panmao Chen, Yang Lu, Hong |
spellingShingle |
Liao, Zhen Zhai, Panmao Chen, Yang Lu, Hong Differing mechanisms for the 2008 and 2016 wintertime cold events in southern China |
author_facet |
Liao, Zhen Zhai, Panmao Chen, Yang Lu, Hong |
author_sort |
Liao, Zhen |
title |
Differing mechanisms for the 2008 and 2016 wintertime cold events in southern China |
title_short |
Differing mechanisms for the 2008 and 2016 wintertime cold events in southern China |
title_full |
Differing mechanisms for the 2008 and 2016 wintertime cold events in southern China |
title_fullStr |
Differing mechanisms for the 2008 and 2016 wintertime cold events in southern China |
title_full_unstemmed |
Differing mechanisms for the 2008 and 2016 wintertime cold events in southern China |
title_sort |
differing mechanisms for the 2008 and 2016 wintertime cold events in southern china |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1002/joc.6498 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.6498 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6498 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6498 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6498 |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
International Journal of Climatology volume 40, issue 11, page 4944-4955 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.6498 |
container_title |
International Journal of Climatology |
container_volume |
40 |
container_issue |
11 |
container_start_page |
4944 |
op_container_end_page |
4955 |
_version_ |
1811635975933132800 |