Wintertime Cold Extremes in Northeast China and Their Linkage with Sea Ice in Barents-Kara Seas
The impacts of Arctic sea ice on the interannual variability of winter extreme low temperature (WELT) in Northeast China (NEC) and the associated atmospheric circulation patterns are explored in this study based on meteorological observation and the National Centers for Environmental Prediction-Nati...
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ftdoajarticles:oai:doaj.org/article:bc0974943c974a409fc4898cc6e67e19 2023-05-15T14:52:02+02:00 Wintertime Cold Extremes in Northeast China and Their Linkage with Sea Ice in Barents-Kara Seas Yongyue Luo Chun Li Jian Shi Xiadong An Yaqing Sun 2021-03-01T00:00:00Z https://doi.org/10.3390/atmos12030386 https://doaj.org/article/bc0974943c974a409fc4898cc6e67e19 EN eng MDPI AG https://www.mdpi.com/2073-4433/12/3/386 https://doaj.org/toc/2073-4433 doi:10.3390/atmos12030386 2073-4433 https://doaj.org/article/bc0974943c974a409fc4898cc6e67e19 Atmosphere, Vol 12, Iss 386, p 386 (2021) winter extreme low temperature Northeast China interannual variability atmospheric circulation sea ice Meteorology. Climatology QC851-999 article 2021 ftdoajarticles https://doi.org/10.3390/atmos12030386 2022-12-31T05:22:36Z The impacts of Arctic sea ice on the interannual variability of winter extreme low temperature (WELT) in Northeast China (NEC) and the associated atmospheric circulation patterns are explored in this study based on meteorological observation and the National Centers for Environmental Prediction-National Center for Atmospheric Research (NCEP/NCAR) reanalysis data. Results show that WELT in NEC has prominent interannual variability. We further use ±0.8 standard deviation as the threshold to select the years of frequent and rare extreme low temperature anomalies. Using composite analysis, we find that there are significant negative geopotential height anomalies at 500 hPa over NEC and positive geopotential height anomalies along the Arctic region, which represent the intensification of the East Asian trough (EAT) and the negative Arctic Oscillation (AO) phase in the years of more frequent WELT. The opposite characteristics are detected in the years of rare WELT. Furthermore, we determine that the Barents-Kara Seas are key sea ice regions in Arctic area. In the years of frequent WELT, the decrease of autumn Barents-Kara Seas sea ice and the positive sea surface temperature anomaly can last until the following winter, which is conducive to the intensification of anticyclonic anomalies in Ural regions and the northward extension of Ural ridge (UR). The northerly flow in front of UR guides the cold air penetrating southward from polar regions. Moreover, the anomalous cyclone over East Asia deepens the EAT. The northerly wind behind EAT guides the cold air to the NEC region, causing the wintertime low temperature there. The almost opposite situation occurs in the years of rare WELT. Article in Journal/Newspaper Arctic Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Atmosphere 12 3 386 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
winter extreme low temperature Northeast China interannual variability atmospheric circulation sea ice Meteorology. Climatology QC851-999 |
spellingShingle |
winter extreme low temperature Northeast China interannual variability atmospheric circulation sea ice Meteorology. Climatology QC851-999 Yongyue Luo Chun Li Jian Shi Xiadong An Yaqing Sun Wintertime Cold Extremes in Northeast China and Their Linkage with Sea Ice in Barents-Kara Seas |
topic_facet |
winter extreme low temperature Northeast China interannual variability atmospheric circulation sea ice Meteorology. Climatology QC851-999 |
description |
The impacts of Arctic sea ice on the interannual variability of winter extreme low temperature (WELT) in Northeast China (NEC) and the associated atmospheric circulation patterns are explored in this study based on meteorological observation and the National Centers for Environmental Prediction-National Center for Atmospheric Research (NCEP/NCAR) reanalysis data. Results show that WELT in NEC has prominent interannual variability. We further use ±0.8 standard deviation as the threshold to select the years of frequent and rare extreme low temperature anomalies. Using composite analysis, we find that there are significant negative geopotential height anomalies at 500 hPa over NEC and positive geopotential height anomalies along the Arctic region, which represent the intensification of the East Asian trough (EAT) and the negative Arctic Oscillation (AO) phase in the years of more frequent WELT. The opposite characteristics are detected in the years of rare WELT. Furthermore, we determine that the Barents-Kara Seas are key sea ice regions in Arctic area. In the years of frequent WELT, the decrease of autumn Barents-Kara Seas sea ice and the positive sea surface temperature anomaly can last until the following winter, which is conducive to the intensification of anticyclonic anomalies in Ural regions and the northward extension of Ural ridge (UR). The northerly flow in front of UR guides the cold air penetrating southward from polar regions. Moreover, the anomalous cyclone over East Asia deepens the EAT. The northerly wind behind EAT guides the cold air to the NEC region, causing the wintertime low temperature there. The almost opposite situation occurs in the years of rare WELT. |
format |
Article in Journal/Newspaper |
author |
Yongyue Luo Chun Li Jian Shi Xiadong An Yaqing Sun |
author_facet |
Yongyue Luo Chun Li Jian Shi Xiadong An Yaqing Sun |
author_sort |
Yongyue Luo |
title |
Wintertime Cold Extremes in Northeast China and Their Linkage with Sea Ice in Barents-Kara Seas |
title_short |
Wintertime Cold Extremes in Northeast China and Their Linkage with Sea Ice in Barents-Kara Seas |
title_full |
Wintertime Cold Extremes in Northeast China and Their Linkage with Sea Ice in Barents-Kara Seas |
title_fullStr |
Wintertime Cold Extremes in Northeast China and Their Linkage with Sea Ice in Barents-Kara Seas |
title_full_unstemmed |
Wintertime Cold Extremes in Northeast China and Their Linkage with Sea Ice in Barents-Kara Seas |
title_sort |
wintertime cold extremes in northeast china and their linkage with sea ice in barents-kara seas |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doi.org/10.3390/atmos12030386 https://doaj.org/article/bc0974943c974a409fc4898cc6e67e19 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
Atmosphere, Vol 12, Iss 386, p 386 (2021) |
op_relation |
https://www.mdpi.com/2073-4433/12/3/386 https://doaj.org/toc/2073-4433 doi:10.3390/atmos12030386 2073-4433 https://doaj.org/article/bc0974943c974a409fc4898cc6e67e19 |
op_doi |
https://doi.org/10.3390/atmos12030386 |
container_title |
Atmosphere |
container_volume |
12 |
container_issue |
3 |
container_start_page |
386 |
_version_ |
1766323164057436160 |