Possible Lagged Impact of the Arctic Sea Ice in Barents–Kara Seas on June Precipitation in Eastern China
Based on the Hadley Centre sea ice concentration, the ERA5 reanalysis, and three precipitation datasets, the possible lagged impact of the Barents–Kara sea ice on June rainfall across China is investigated. Using the singular value decomposition, it is revealed that the state of sea ice concentratio...
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ftdoajarticles:oai:doaj.org/article:d19d252d4e544327bc9c262eb6f4f99d 2023-05-15T15:01:48+02:00 Possible Lagged Impact of the Arctic Sea Ice in Barents–Kara Seas on June Precipitation in Eastern China Huidi Yang Jian Rao Haishan Chen 2022-04-01T00:00:00Z https://doi.org/10.3389/feart.2022.886192 https://doaj.org/article/d19d252d4e544327bc9c262eb6f4f99d EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/feart.2022.886192/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2022.886192 https://doaj.org/article/d19d252d4e544327bc9c262eb6f4f99d Frontiers in Earth Science, Vol 10 (2022) Barents–Kara seas sea ice China rainfall singular value decomposition CMIP6 Science Q article 2022 ftdoajarticles https://doi.org/10.3389/feart.2022.886192 2022-12-31T01:31:50Z Based on the Hadley Centre sea ice concentration, the ERA5 reanalysis, and three precipitation datasets, the possible lagged impact of the Barents–Kara sea ice on June rainfall across China is investigated. Using the singular value decomposition, it is revealed that the state of sea ice concentration in Barents–Kara Seas from November to December is closely related to regional precipitation in June, which is most evident across the Yangtze–Huai Rivers Valley and South China. Possible pathways from preceding Arctic sea ice concentration to June precipitation are examined and discussed. First, the sea ice concentration usually has a long memory, which exerts a long-lasting and lagged impact, although the sea ice anomaly amplitude gradually weakens from early winter to early summer. Second, an increase in Barents–Kara sea ice usually corresponds to a stronger stratospheric polar vortex in midwinter by suppressing extratropical wave activities, which is projected to the positive phase of northern annular mode (NAM). Strong vortex gradually recovers to its normal state and even weakens in spring, which corresponds to the negative NAM response from spring to early summer. Third, the stratospheric anomalies associated with the Barents–Kara sea ice variations propagate downward. Due to the out-of-phase relationship between the lower and upper stratospheric circulation anomalies after midwinter, westerly anomalies in midwinter are followed by easterly anomalies in later months in the circumpolar region, consistent with the positive NAM response in midwinter, negative NAM response in spring, and a wave train-like response in early summer to Barents–Kara sea ice increase (and vice versa). The observed lagged impact of Barents–Kara sea ice on China rainfall in June is limitedly simulated in the ten CMIP6 models used in this study. Article in Journal/Newspaper Arctic Kara Sea Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Kara Sea Midwinter ENVELOPE(139.931,139.931,-66.690,-66.690) Frontiers in Earth Science 10 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Barents–Kara seas sea ice China rainfall singular value decomposition CMIP6 Science Q |
spellingShingle |
Barents–Kara seas sea ice China rainfall singular value decomposition CMIP6 Science Q Huidi Yang Jian Rao Haishan Chen Possible Lagged Impact of the Arctic Sea Ice in Barents–Kara Seas on June Precipitation in Eastern China |
topic_facet |
Barents–Kara seas sea ice China rainfall singular value decomposition CMIP6 Science Q |
description |
Based on the Hadley Centre sea ice concentration, the ERA5 reanalysis, and three precipitation datasets, the possible lagged impact of the Barents–Kara sea ice on June rainfall across China is investigated. Using the singular value decomposition, it is revealed that the state of sea ice concentration in Barents–Kara Seas from November to December is closely related to regional precipitation in June, which is most evident across the Yangtze–Huai Rivers Valley and South China. Possible pathways from preceding Arctic sea ice concentration to June precipitation are examined and discussed. First, the sea ice concentration usually has a long memory, which exerts a long-lasting and lagged impact, although the sea ice anomaly amplitude gradually weakens from early winter to early summer. Second, an increase in Barents–Kara sea ice usually corresponds to a stronger stratospheric polar vortex in midwinter by suppressing extratropical wave activities, which is projected to the positive phase of northern annular mode (NAM). Strong vortex gradually recovers to its normal state and even weakens in spring, which corresponds to the negative NAM response from spring to early summer. Third, the stratospheric anomalies associated with the Barents–Kara sea ice variations propagate downward. Due to the out-of-phase relationship between the lower and upper stratospheric circulation anomalies after midwinter, westerly anomalies in midwinter are followed by easterly anomalies in later months in the circumpolar region, consistent with the positive NAM response in midwinter, negative NAM response in spring, and a wave train-like response in early summer to Barents–Kara sea ice increase (and vice versa). The observed lagged impact of Barents–Kara sea ice on China rainfall in June is limitedly simulated in the ten CMIP6 models used in this study. |
format |
Article in Journal/Newspaper |
author |
Huidi Yang Jian Rao Haishan Chen |
author_facet |
Huidi Yang Jian Rao Haishan Chen |
author_sort |
Huidi Yang |
title |
Possible Lagged Impact of the Arctic Sea Ice in Barents–Kara Seas on June Precipitation in Eastern China |
title_short |
Possible Lagged Impact of the Arctic Sea Ice in Barents–Kara Seas on June Precipitation in Eastern China |
title_full |
Possible Lagged Impact of the Arctic Sea Ice in Barents–Kara Seas on June Precipitation in Eastern China |
title_fullStr |
Possible Lagged Impact of the Arctic Sea Ice in Barents–Kara Seas on June Precipitation in Eastern China |
title_full_unstemmed |
Possible Lagged Impact of the Arctic Sea Ice in Barents–Kara Seas on June Precipitation in Eastern China |
title_sort |
possible lagged impact of the arctic sea ice in barents–kara seas on june precipitation in eastern china |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
https://doi.org/10.3389/feart.2022.886192 https://doaj.org/article/d19d252d4e544327bc9c262eb6f4f99d |
long_lat |
ENVELOPE(139.931,139.931,-66.690,-66.690) |
geographic |
Arctic Kara Sea Midwinter |
geographic_facet |
Arctic Kara Sea Midwinter |
genre |
Arctic Kara Sea Sea ice |
genre_facet |
Arctic Kara Sea Sea ice |
op_source |
Frontiers in Earth Science, Vol 10 (2022) |
op_relation |
https://www.frontiersin.org/articles/10.3389/feart.2022.886192/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2022.886192 https://doaj.org/article/d19d252d4e544327bc9c262eb6f4f99d |
op_doi |
https://doi.org/10.3389/feart.2022.886192 |
container_title |
Frontiers in Earth Science |
container_volume |
10 |
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1766333807270559744 |