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Contribution of Arctic Cyclones of Different Origins to Poleward Heat Transport to the Arctic.

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Title: Contribution of Arctic Cyclones of Different Origins to Poleward Heat Transport to the Arctic.
Authors: Yang, Mingshi1 (AUTHOR), Wang, Zhuo1 (AUTHOR) zhuowang@illinois.edu, Walsh, John E.2 (AUTHOR), Doyle, James D.3 (AUTHOR), Fearon, Matthew G.4 (AUTHOR)
Source: Journal of Climate. May2025, Vol. 38 Issue 9, p2129-2138. 10p.
Subjects: Polar vortex, Cyclone tracking, Arctic climate, Autumn, Seasons, Cyclones
Abstract: Arctic cyclones play a crucial role in Arctic weather and climate. It has been shown that Arctic cyclones of different origins have different structural characteristics. In this study, we examine the contributions of Arctic cyclones of polar (ACP) origin and Arctic cyclones of midlatitude (ACM) origin to poleward heat transport in the Arctic using a cyclone track dataset and ERA5 reanalysis from 1979 to 2021. We found that ACMs are associated with stronger poleward heat transport per cyclone than ACPs due to their structural differences. The eddy component of heat transport along a latitude circle dominates over the mean component and is enhanced during years of high AC activity. Notably, ACM activity is concentrated over the Nordic seas and is significantly correlated to the variations of heat transport in winter, while the variability of ACP activity is associated with the changes of the Arctic frontal zone and is significantly correlated to the variations of heat transport in summer. The variations in ACP and ACM activity are associated with different environmental conditions: active ACM winters are associated with a stronger zonal jet over the subpolar regions, particularly across the North Atlantic, while active ACP summers are characterized by a stronger Arctic jet. Furthermore, poleward heat transport by the mean flow is enhanced significantly between 60° and 80°N during years of high AC activity in both summer and winter. Additionally, a negative correlation exists in the seasonal frequencies of ACPs and ACMs in summer and autumn, indicating the compensation between the heat transport by ACPs and ACMs. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Climate is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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Items – Name: Title
  Label: Title
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  Data: Contribution of Arctic Cyclones of Different Origins to Poleward Heat Transport to the Arctic.
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  Data: <searchLink fieldCode="AR" term="%22Yang%2C+Mingshi%22">Yang, Mingshi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Zhuo%22">Wang, Zhuo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhuowang@illinois.edu</i><br /><searchLink fieldCode="AR" term="%22Walsh%2C+John+E%2E%22">Walsh, John E.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Doyle%2C+James+D%2E%22">Doyle, James D.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fearon%2C+Matthew+G%2E%22">Fearon, Matthew G.</searchLink><relatesTo>4</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Climate%22">Journal of Climate</searchLink>. May2025, Vol. 38 Issue 9, p2129-2138. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Polar+vortex%22">Polar vortex</searchLink><br /><searchLink fieldCode="DE" term="%22Cyclone+tracking%22">Cyclone tracking</searchLink><br /><searchLink fieldCode="DE" term="%22Arctic+climate%22">Arctic climate</searchLink><br /><searchLink fieldCode="DE" term="%22Autumn%22">Autumn</searchLink><br /><searchLink fieldCode="DE" term="%22Seasons%22">Seasons</searchLink><br /><searchLink fieldCode="DE" term="%22Cyclones%22">Cyclones</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Arctic cyclones play a crucial role in Arctic weather and climate. It has been shown that Arctic cyclones of different origins have different structural characteristics. In this study, we examine the contributions of Arctic cyclones of polar (ACP) origin and Arctic cyclones of midlatitude (ACM) origin to poleward heat transport in the Arctic using a cyclone track dataset and ERA5 reanalysis from 1979 to 2021. We found that ACMs are associated with stronger poleward heat transport per cyclone than ACPs due to their structural differences. The eddy component of heat transport along a latitude circle dominates over the mean component and is enhanced during years of high AC activity. Notably, ACM activity is concentrated over the Nordic seas and is significantly correlated to the variations of heat transport in winter, while the variability of ACP activity is associated with the changes of the Arctic frontal zone and is significantly correlated to the variations of heat transport in summer. The variations in ACP and ACM activity are associated with different environmental conditions: active ACM winters are associated with a stronger zonal jet over the subpolar regions, particularly across the North Atlantic, while active ACP summers are characterized by a stronger Arctic jet. Furthermore, poleward heat transport by the mean flow is enhanced significantly between 60° and 80°N during years of high AC activity in both summer and winter. Additionally, a negative correlation exists in the seasonal frequencies of ACPs and ACMs in summer and autumn, indicating the compensation between the heat transport by ACPs and ACMs. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Climate is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1175/JCLI-D-24-0445.1
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      – Code: eng
        Text: English
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        PageCount: 10
        StartPage: 2129
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      – SubjectFull: Polar vortex
        Type: general
      – SubjectFull: Cyclone tracking
        Type: general
      – SubjectFull: Arctic climate
        Type: general
      – SubjectFull: Autumn
        Type: general
      – SubjectFull: Seasons
        Type: general
      – SubjectFull: Cyclones
        Type: general
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      – TitleFull: Contribution of Arctic Cyclones of Different Origins to Poleward Heat Transport to the Arctic.
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            NameFull: Yang, Mingshi
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            NameFull: Wang, Zhuo
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            NameFull: Walsh, John E.
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            NameFull: Doyle, James D.
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            – D: 01
              M: 05
              Text: May2025
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              Y: 2025
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