Preprints
https://doi.org/10.5194/egusphere-2024-597
https://doi.org/10.5194/egusphere-2024-597
04 Mar 2024
 | 04 Mar 2024

Spatio-temporal filtering of jets obscures the reinforcement of baroclinicity by latent heating

Henrik Auestad, Clemens Spensberger, Andrea Marcheggiani, Paulo Ceppi, Thomas Spengler, and Tim Woollings

Abstract. Latent heating modifies the jet stream by modifying the vertical geostrophic wind shear, thereby altering the potential for baroclinic development. Hence, correctly representing diabatic effects is important for modelling the mid-latitude atmospheric circulation and variability. Yet, the direct effects of diabatic heating remain poorly understood. For example, there is no consensus on the effect of latent heating on the cross-jet temperature contrast. We show that this disagreement is attributable to the choice of spatio-temporal filtering. Jet representations relying on filtered wind tend to have the strongest latent heating on the cold flank of the jet, thus weakening the cross-jet temperature contrast. In contrast, jet representations reflecting the two-dimensional instantaneous wind field have the strongest latent heating on the warm flank of the jet. Furthermore, we show that latent heating primarily occurs on the warm flank of poleward directed instantaneous jets, which is the case for all storm tracks and seasons.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.

Journal article(s) based on this preprint

14 Oct 2024
Spatio-temporal averaging of jets obscures the reinforcement of baroclinicity by latent heating
Henrik Auestad, Clemens Spensberger, Andrea Marcheggiani, Paulo Ceppi, Thomas Spengler, and Tim Woollings
Weather Clim. Dynam., 5, 1269–1286, https://doi.org/10.5194/wcd-5-1269-2024,https://doi.org/10.5194/wcd-5-1269-2024, 2024
Short summary
Henrik Auestad, Clemens Spensberger, Andrea Marcheggiani, Paulo Ceppi, Thomas Spengler, and Tim Woollings

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2024-597', Anonymous Referee #1, 01 Apr 2024
  • RC2: 'Comment on egusphere-2024-597', Anonymous Referee #2, 23 Apr 2024
  • AC1: 'Author Comment - reply', Henrik Auestad, 28 May 2024

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2024-597', Anonymous Referee #1, 01 Apr 2024
  • RC2: 'Comment on egusphere-2024-597', Anonymous Referee #2, 23 Apr 2024
  • AC1: 'Author Comment - reply', Henrik Auestad, 28 May 2024

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Henrik Auestad on behalf of the Authors (28 May 2024)  Author's response   Author's tracked changes   Manuscript 
ED: Referee Nomination & Report Request started (05 Jun 2024) by Gwendal Rivière
RR by Anonymous Referee #2 (18 Jun 2024)
RR by Anonymous Referee #1 (01 Jul 2024)
ED: Publish subject to revisions (further review by editor and referees) (09 Jul 2024) by Gwendal Rivière
AR by Henrik Auestad on behalf of the Authors (15 Aug 2024)  Author's response   Author's tracked changes   Manuscript 
ED: Publish subject to technical corrections (28 Aug 2024) by Gwendal Rivière
AR by Henrik Auestad on behalf of the Authors (29 Aug 2024)  Manuscript 

Journal article(s) based on this preprint

14 Oct 2024
Spatio-temporal averaging of jets obscures the reinforcement of baroclinicity by latent heating
Henrik Auestad, Clemens Spensberger, Andrea Marcheggiani, Paulo Ceppi, Thomas Spengler, and Tim Woollings
Weather Clim. Dynam., 5, 1269–1286, https://doi.org/10.5194/wcd-5-1269-2024,https://doi.org/10.5194/wcd-5-1269-2024, 2024
Short summary
Henrik Auestad, Clemens Spensberger, Andrea Marcheggiani, Paulo Ceppi, Thomas Spengler, and Tim Woollings
Henrik Auestad, Clemens Spensberger, Andrea Marcheggiani, Paulo Ceppi, Thomas Spengler, and Tim Woollings

Viewed

Total article views: 404 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
300 78 26 404 20 15
  • HTML: 300
  • PDF: 78
  • XML: 26
  • Total: 404
  • BibTeX: 20
  • EndNote: 15
Views and downloads (calculated since 04 Mar 2024)
Cumulative views and downloads (calculated since 04 Mar 2024)

Viewed (geographical distribution)

Total article views: 479 (including HTML, PDF, and XML) Thereof 479 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Latest update: 14 Oct 2024
Download

The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.

Short summary
Latent heating due to condensation can influence atmospheric circulation by strengthening or weakening horizontal temperature contrasts. Strong temperature contrasts intensify storms and imply the existence of strong upper tropospheric winds, called jets. It remains unclear whether latent heating preferentially reinforces or abates the existing jet. We show that this disagreement is attributable to how the jet is defined, confirming that latent heating reinforces the jet.