Climatological features of blocking highs from the perspective of air mass and mass transport
Abstract We investigated the spatiotemporal features of the air mass and its transport during the lifetime of the four main blocking highs (the Greenland, Atlantic–Europe, Ural and North Pacific blocking highs) observed in the northern winter using the daily European Centre for Medium‐Range Weather...
Published in: | International Journal of Climatology |
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crwiley:10.1002/joc.6238 2024-06-23T07:53:17+00:00 Climatological features of blocking highs from the perspective of air mass and mass transport Li, Yafei Ren, Rongcai Cai, Ming Yu, Yueyue National Natural Science Foundation of China 2019 http://dx.doi.org/10.1002/joc.6238 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.6238 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6238 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6238 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6238 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 40, issue 2, page 782-794 ISSN 0899-8418 1097-0088 journal-article 2019 crwiley https://doi.org/10.1002/joc.6238 2024-06-13T04:22:44Z Abstract We investigated the spatiotemporal features of the air mass and its transport during the lifetime of the four main blocking highs (the Greenland, Atlantic–Europe, Ural and North Pacific blocking highs) observed in the northern winter using the daily European Centre for Medium‐Range Weather Forecasts Re‐Analysis Interim data set for the time period 1979–2016. The results showed that the positive mass anomalies corresponding to a blocking high only appear in the mid‐troposphere, while negative mass anomalies persist in the lower layer during blocking events. Budget analysis based on the mass continuity equation under isentropic coordinates indicated that adiabatic mass transport is the main contributor to the build‐up of blocking highs and is always convergent in the mid‐troposphere before the peak day of blocking. By contrast, diabatic mass transport always moves the air mass from the mid‐ to lower troposphere and acts to destroy the blocking high. The meridional flow makes the strongest contribution to mass convergence in the Greenland and North Pacific blocking highs in the mid‐troposphere, whereas zonal flow is the main contributor to mass convergence in the Atlantic–Europe blocking high. Both zonal and meridional flows contribute to mass convergence in the Ural blocking high, although meridional flow makes a greater contribution. Article in Journal/Newspaper Greenland Wiley Online Library Greenland Pacific International Journal of Climatology 40 2 782 794 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract We investigated the spatiotemporal features of the air mass and its transport during the lifetime of the four main blocking highs (the Greenland, Atlantic–Europe, Ural and North Pacific blocking highs) observed in the northern winter using the daily European Centre for Medium‐Range Weather Forecasts Re‐Analysis Interim data set for the time period 1979–2016. The results showed that the positive mass anomalies corresponding to a blocking high only appear in the mid‐troposphere, while negative mass anomalies persist in the lower layer during blocking events. Budget analysis based on the mass continuity equation under isentropic coordinates indicated that adiabatic mass transport is the main contributor to the build‐up of blocking highs and is always convergent in the mid‐troposphere before the peak day of blocking. By contrast, diabatic mass transport always moves the air mass from the mid‐ to lower troposphere and acts to destroy the blocking high. The meridional flow makes the strongest contribution to mass convergence in the Greenland and North Pacific blocking highs in the mid‐troposphere, whereas zonal flow is the main contributor to mass convergence in the Atlantic–Europe blocking high. Both zonal and meridional flows contribute to mass convergence in the Ural blocking high, although meridional flow makes a greater contribution. |
author2 |
National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Li, Yafei Ren, Rongcai Cai, Ming Yu, Yueyue |
spellingShingle |
Li, Yafei Ren, Rongcai Cai, Ming Yu, Yueyue Climatological features of blocking highs from the perspective of air mass and mass transport |
author_facet |
Li, Yafei Ren, Rongcai Cai, Ming Yu, Yueyue |
author_sort |
Li, Yafei |
title |
Climatological features of blocking highs from the perspective of air mass and mass transport |
title_short |
Climatological features of blocking highs from the perspective of air mass and mass transport |
title_full |
Climatological features of blocking highs from the perspective of air mass and mass transport |
title_fullStr |
Climatological features of blocking highs from the perspective of air mass and mass transport |
title_full_unstemmed |
Climatological features of blocking highs from the perspective of air mass and mass transport |
title_sort |
climatological features of blocking highs from the perspective of air mass and mass transport |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1002/joc.6238 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.6238 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6238 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6238 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6238 |
geographic |
Greenland Pacific |
geographic_facet |
Greenland Pacific |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
International Journal of Climatology volume 40, issue 2, page 782-794 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.6238 |
container_title |
International Journal of Climatology |
container_volume |
40 |
container_issue |
2 |
container_start_page |
782 |
op_container_end_page |
794 |
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1802644870926434304 |