Relationship between the interannual and intraseasonal temperature variability in Northeast China
Abstract A significant negative correlation between the seasonal mean temperature anomaly and the intensity of the intraseasonal temperature oscillation in the northern winter over Northeast China is found during the time period 1959–2011. A stronger intraseasonal oscillation (ISO) is found during a...
Published in: | International Journal of Climatology |
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Online Access: | http://dx.doi.org/10.1002/joc.7247 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7247 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.7247 https://rmets.onlinelibrary.wiley.com/doi/am-pdf/10.1002/joc.7247 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7247 |
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crwiley:10.1002/joc.7247 2024-06-02T08:11:37+00:00 Relationship between the interannual and intraseasonal temperature variability in Northeast China Li, Wenhui Tan, Guirong Li, Tim Injury Prevention Research Center National Natural Science Foundation of China National Science Foundation National Oceanic and Atmospheric Administration 2021 http://dx.doi.org/10.1002/joc.7247 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7247 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.7247 https://rmets.onlinelibrary.wiley.com/doi/am-pdf/10.1002/joc.7247 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7247 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 42, issue 1, page 352-366 ISSN 0899-8418 1097-0088 journal-article 2021 crwiley https://doi.org/10.1002/joc.7247 2024-05-03T11:11:23Z Abstract A significant negative correlation between the seasonal mean temperature anomaly and the intensity of the intraseasonal temperature oscillation in the northern winter over Northeast China is found during the time period 1959–2011. A stronger intraseasonal oscillation (ISO) is found during an extremely cold winter. The cold winter in Northeast China is a part of zonally oriented large‐scale pattern with a negative (positive) temperature anomaly in mid‐ (high) latitudes and is associated with a negative phase of the North Atlantic Oscillation (NAO). The intraseasonal temperature anomaly originates from high‐latitude Central Eurasia and propagates southeastward. The southeastward propagation is attributed to the upper tropospheric dispersion of Rossby wave energy as a result of coupling of the low‐level temperature and the upper‐level geopotential height. The cause of the negative correlation between the intraseasonal and interannual modes is investigated. A cold winter in Northeast China is associated with a weakened meridional temperature gradient and vertical wind shear north of 50°N. This weakens synoptic variability in situ through baroclinic instability. Because the ISO competes for an energy source with the synoptic motion, the ISO is enhanced north of 50°N. The southeastward propagation of the enhanced ISO mode increased intraseasonal temperature variability over Northeast China. As a result, a cold winter in Northeast China is accompanied by an enhanced ISO variability in situ. The enhanced local ISO could further feedback to the winter mean temperature anomaly through nonlinear advective processes. The diagnosis of the temperature budget indicates that the ISO may interact with motion on other scales to contribute to the winter mean temperature anomaly in situ. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Wiley Online Library International Journal of Climatology 42 1 352 366 |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract A significant negative correlation between the seasonal mean temperature anomaly and the intensity of the intraseasonal temperature oscillation in the northern winter over Northeast China is found during the time period 1959–2011. A stronger intraseasonal oscillation (ISO) is found during an extremely cold winter. The cold winter in Northeast China is a part of zonally oriented large‐scale pattern with a negative (positive) temperature anomaly in mid‐ (high) latitudes and is associated with a negative phase of the North Atlantic Oscillation (NAO). The intraseasonal temperature anomaly originates from high‐latitude Central Eurasia and propagates southeastward. The southeastward propagation is attributed to the upper tropospheric dispersion of Rossby wave energy as a result of coupling of the low‐level temperature and the upper‐level geopotential height. The cause of the negative correlation between the intraseasonal and interannual modes is investigated. A cold winter in Northeast China is associated with a weakened meridional temperature gradient and vertical wind shear north of 50°N. This weakens synoptic variability in situ through baroclinic instability. Because the ISO competes for an energy source with the synoptic motion, the ISO is enhanced north of 50°N. The southeastward propagation of the enhanced ISO mode increased intraseasonal temperature variability over Northeast China. As a result, a cold winter in Northeast China is accompanied by an enhanced ISO variability in situ. The enhanced local ISO could further feedback to the winter mean temperature anomaly through nonlinear advective processes. The diagnosis of the temperature budget indicates that the ISO may interact with motion on other scales to contribute to the winter mean temperature anomaly in situ. |
author2 |
Injury Prevention Research Center National Natural Science Foundation of China National Science Foundation National Oceanic and Atmospheric Administration |
format |
Article in Journal/Newspaper |
author |
Li, Wenhui Tan, Guirong Li, Tim |
spellingShingle |
Li, Wenhui Tan, Guirong Li, Tim Relationship between the interannual and intraseasonal temperature variability in Northeast China |
author_facet |
Li, Wenhui Tan, Guirong Li, Tim |
author_sort |
Li, Wenhui |
title |
Relationship between the interannual and intraseasonal temperature variability in Northeast China |
title_short |
Relationship between the interannual and intraseasonal temperature variability in Northeast China |
title_full |
Relationship between the interannual and intraseasonal temperature variability in Northeast China |
title_fullStr |
Relationship between the interannual and intraseasonal temperature variability in Northeast China |
title_full_unstemmed |
Relationship between the interannual and intraseasonal temperature variability in Northeast China |
title_sort |
relationship between the interannual and intraseasonal temperature variability in northeast china |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1002/joc.7247 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7247 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.7247 https://rmets.onlinelibrary.wiley.com/doi/am-pdf/10.1002/joc.7247 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7247 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
International Journal of Climatology volume 42, issue 1, page 352-366 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.7247 |
container_title |
International Journal of Climatology |
container_volume |
42 |
container_issue |
1 |
container_start_page |
352 |
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366 |
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1800757825687781376 |