Preprints
https://doi.org/10.5194/egusphere-2022-351
https://doi.org/10.5194/egusphere-2022-351
 
24 May 2022
24 May 2022

The composite development and structure of intense synoptic-scale Arctic cyclones

Alexander F. Vessey1, Kevin I. Hodges1,2, Len C. Shaffrey1,2, and Jonathan J. Day3 Alexander F. Vessey et al.
  • 1Department of Meteorology, University of Reading, Earley Gate, Reading RG6 6BB, UK
  • 2National Centre for Atmospheric Science, University of Reading, Earley Gate, Reading RG6 6BB, UK
  • 3ECMWF, Shinfeld Park, Reading RG2 9AX, UK

Abstract. Understanding the location and intensity of hazardous weather across the Arctic is important for assessing risks to infrastructure, shipping, and coastal communities. A key driver of these risks are the high winds, high ocean waves and heavy precipitation, which are dependent on the structure and development of intense synoptic-scale cyclones. This study aims to describe the typical lifetime, structure, and development of a large sample of past intense winter (DJF) and summer (JJA) synoptic-scale Arctic cyclones, using a storm compositing methodology applied to the ERA5 reanalysis.

Results show that the composite development and structure of intense Arctic summer cyclones is different to that of intense winter Arctic and North Atlantic Ocean extra-tropical cyclones, and to that described in conceptual models of extra-tropical and Arctic cyclones. The composite structure of intense Arctic summer cyclones shows that they typically undergo a structural transition around the time of maximum intensity from having a baroclinic structure to an axi-symmetric cold-core structure throughout the troposphere, with a low-lying tropopause and large positive temperature anomaly in the lower stratosphere. Arctic summer cyclones are also found to have longer lifetimes than these other cyclones, potentially causing prolonged hazardous and disruptive weather conditions in the Arctic.

Journal article(s) based on this preprint

22 Sep 2022
The composite development and structure of intense synoptic-scale Arctic cyclones
Alexander F. Vessey, Kevin I. Hodges, Len C. Shaffrey, and Jonathan J. Day
Weather Clim. Dynam., 3, 1097–1112, https://doi.org/10.5194/wcd-3-1097-2022,https://doi.org/10.5194/wcd-3-1097-2022, 2022
Short summary

Alexander F. Vessey et al.

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-351', Anonymous Referee #1, 11 Jun 2022
  • RC2: 'Comment on egusphere-2022-351', Anonymous Referee #2, 19 Jun 2022
  • RC3: 'Comment on egusphere-2022-351', Anonymous Referee #3, 30 Jun 2022
  • AC1: 'Comment on egusphere-2022-351', Alexander Vessey, 02 Aug 2022

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-351', Anonymous Referee #1, 11 Jun 2022
  • RC2: 'Comment on egusphere-2022-351', Anonymous Referee #2, 19 Jun 2022
  • RC3: 'Comment on egusphere-2022-351', Anonymous Referee #3, 30 Jun 2022
  • AC1: 'Comment on egusphere-2022-351', Alexander Vessey, 02 Aug 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Alexander Vessey on behalf of the Authors (02 Aug 2022)  Author's response    Author's tracked changes    Manuscript
ED: Referee Nomination & Report Request started (08 Aug 2022) by Tiina Nygård
RR by Anonymous Referee #2 (26 Aug 2022)
ED: Publish subject to technical corrections (26 Aug 2022) by Tiina Nygård
AR by Alexander Vessey on behalf of the Authors (05 Sep 2022)  Author's response    Manuscript

Journal article(s) based on this preprint

22 Sep 2022
The composite development and structure of intense synoptic-scale Arctic cyclones
Alexander F. Vessey, Kevin I. Hodges, Len C. Shaffrey, and Jonathan J. Day
Weather Clim. Dynam., 3, 1097–1112, https://doi.org/10.5194/wcd-3-1097-2022,https://doi.org/10.5194/wcd-3-1097-2022, 2022
Short summary

Alexander F. Vessey et al.

Alexander F. Vessey et al.

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Short summary
Understanding the location and intensity of hazardous weather across the Arctic is important for assessing risks to infrastructure, shipping, and coastal communities. This study describes the typical lifetime and structure of intense winter and summer Arctic cyclones. Results show the composite development and structure of intense Arctic summer cyclones is different to intense winter Arctic and North Atlantic Ocean extra-tropical cyclones, and to conceptual models.