The role of stratosphere vortex downward intrusion in a long‐lasting late‐summer Arctic storm

Storm activities have recently exhibited intensification over the Arctic, potentially impacting air–ice–sea interactions and contributing to rapid changes in the Arctic climate and environment. In this study, the spatial and temporal structures and driving mechanisms of a long‐lasting storm occurrin...

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Published in:Quarterly Journal of the Royal Meteorological Society
Main Authors: Tao, Wei, Zhang, Jing, Zhang, Xiangdong
Other Authors: North Carolina Agricultural and Technical State University
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2017
Subjects:
Online Access:http://dx.doi.org/10.1002/qj.3055
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spelling crwiley:10.1002/qj.3055 2024-06-23T07:49:38+00:00 The role of stratosphere vortex downward intrusion in a long‐lasting late‐summer Arctic storm Tao, Wei Zhang, Jing Zhang, Xiangdong North Carolina Agricultural and Technical State University 2017 http://dx.doi.org/10.1002/qj.3055 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fqj.3055 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.3055 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Quarterly Journal of the Royal Meteorological Society volume 143, issue 705, page 1953-1966 ISSN 0035-9009 1477-870X journal-article 2017 crwiley https://doi.org/10.1002/qj.3055 2024-06-06T04:22:27Z Storm activities have recently exhibited intensification over the Arctic, potentially impacting air–ice–sea interactions and contributing to rapid changes in the Arctic climate and environment. In this study, the spatial and temporal structures and driving mechanisms of a long‐lasting storm occurring in September 2010 over the Arctic Ocean have been investigated using modelling experiments. The storm dominantly demonstrates an equivalent barotropic structure from the surface to the lower stratosphere, and an upper troposphere–lower stratosphere warm and mid–low troposphere cold temperature anomaly distribution throughout its entire development period, showing large differences from those that are predominantly driven by baroclinic instability. The stratosphere vortex downward intrusion and the resultant upper troposphere–lower stratosphere positive potential vorticity ( PV ) anomaly play a decisive role in the storm's intensification and long‐lasting duration, though a merged surface baroclinic front also makes contributions at the initial time period. Although both increased static stability and positive vorticity due to the thermal structure anomaly and resulting cyclonic jet are two contributors to PV , we found that the former predominantly governs the PV anomaly evolution and, in turn, determines the storm's intensity and lifetime. In particular, our new finding shows an out‐of‐phase occurrence in time between the maximum upper warm and lower cold temperature anomalies, which sustains the intensity and persistence of the PV anomaly and, in turn, the storm over an extended time period. The results here may have significant implications for enhancing Arctic storm prediction capability, and improving understanding of the physical mechanisms of large‐scale climate variability and changes and their linkage to synoptic storms. Article in Journal/Newspaper Arctic Arctic Ocean Wiley Online Library Arctic Arctic Ocean Quarterly Journal of the Royal Meteorological Society 143 705 1953 1966
institution Open Polar
collection Wiley Online Library
op_collection_id crwiley
language English
description Storm activities have recently exhibited intensification over the Arctic, potentially impacting air–ice–sea interactions and contributing to rapid changes in the Arctic climate and environment. In this study, the spatial and temporal structures and driving mechanisms of a long‐lasting storm occurring in September 2010 over the Arctic Ocean have been investigated using modelling experiments. The storm dominantly demonstrates an equivalent barotropic structure from the surface to the lower stratosphere, and an upper troposphere–lower stratosphere warm and mid–low troposphere cold temperature anomaly distribution throughout its entire development period, showing large differences from those that are predominantly driven by baroclinic instability. The stratosphere vortex downward intrusion and the resultant upper troposphere–lower stratosphere positive potential vorticity ( PV ) anomaly play a decisive role in the storm's intensification and long‐lasting duration, though a merged surface baroclinic front also makes contributions at the initial time period. Although both increased static stability and positive vorticity due to the thermal structure anomaly and resulting cyclonic jet are two contributors to PV , we found that the former predominantly governs the PV anomaly evolution and, in turn, determines the storm's intensity and lifetime. In particular, our new finding shows an out‐of‐phase occurrence in time between the maximum upper warm and lower cold temperature anomalies, which sustains the intensity and persistence of the PV anomaly and, in turn, the storm over an extended time period. The results here may have significant implications for enhancing Arctic storm prediction capability, and improving understanding of the physical mechanisms of large‐scale climate variability and changes and their linkage to synoptic storms.
author2 North Carolina Agricultural and Technical State University
format Article in Journal/Newspaper
author Tao, Wei
Zhang, Jing
Zhang, Xiangdong
spellingShingle Tao, Wei
Zhang, Jing
Zhang, Xiangdong
The role of stratosphere vortex downward intrusion in a long‐lasting late‐summer Arctic storm
author_facet Tao, Wei
Zhang, Jing
Zhang, Xiangdong
author_sort Tao, Wei
title The role of stratosphere vortex downward intrusion in a long‐lasting late‐summer Arctic storm
title_short The role of stratosphere vortex downward intrusion in a long‐lasting late‐summer Arctic storm
title_full The role of stratosphere vortex downward intrusion in a long‐lasting late‐summer Arctic storm
title_fullStr The role of stratosphere vortex downward intrusion in a long‐lasting late‐summer Arctic storm
title_full_unstemmed The role of stratosphere vortex downward intrusion in a long‐lasting late‐summer Arctic storm
title_sort role of stratosphere vortex downward intrusion in a long‐lasting late‐summer arctic storm
publisher Wiley
publishDate 2017
url http://dx.doi.org/10.1002/qj.3055
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fqj.3055
https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.3055
geographic Arctic
Arctic Ocean
geographic_facet Arctic
Arctic Ocean
genre Arctic
Arctic Ocean
genre_facet Arctic
Arctic Ocean
op_source Quarterly Journal of the Royal Meteorological Society
volume 143, issue 705, page 1953-1966
ISSN 0035-9009 1477-870X
op_rights http://onlinelibrary.wiley.com/termsAndConditions#vor
op_doi https://doi.org/10.1002/qj.3055
container_title Quarterly Journal of the Royal Meteorological Society
container_volume 143
container_issue 705
container_start_page 1953
op_container_end_page 1966
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