View in EDS

Gravity Waves in Global High‐Resolution Simulations With Explicit and Parameterized Convection.

Saved in:
Bibliographic Details
Title: Gravity Waves in Global High‐Resolution Simulations With Explicit and Parameterized Convection.
Authors: Stephan, C. C.1, Schmidt, H.1, Strube, C.2, Ern, M.2, Hoffmann, L.2, Preusse, P.2, Klocke, D.3
Source: Journal of Geophysical Research. Atmospheres. 4/27/2019, Vol. 124 Issue 8, p4446-4459. 14p.
Subject Terms: *Convection (Meteorology), *Ozone layer, Gravity waves, Simulation methods & models, Spatiotemporal processes, Parameterization
Abstract: Increasing computing resources allow us to run weather and climate models at horizontal resolutions of 1–10 km. At this range, which is often referred to as the convective gray zone, clouds and convective transport are partly resolved, yet models may not achieve a satisfactory performance without convective parameterizations. Meanwhile, large fractions of the gravity wave (GW) spectrum become resolved at these scales. Convectively generated GWs are sensitive to spatiotemporal characteristics of convective cells. This raises the question of how resolved GWs respond to changes in the treatment of convection. Two global simulations with a horizontal grid spacing of 5 km are performed, one with explicit and one with parameterized convection. The latitudinal profiles of absolute zonal‐mean GW momentum flux match well between both model configurations and observations by satellite limb sounders. However, the simulation with explicit convection shows ∼30–50% larger zonal‐mean momentum fluxes in the summer hemisphere subtropics, where convection is the dominant source of GWs. Our results imply that changes in convection associated with the choice of explicit versus parameterized convection can have important consequences for resolved GWs, with broad implications for the circulation and the transport in the middle atmosphere. Key Points: Parameterized convection reduces the stratospheric zonal‐mean zonal gravity wave momentum fluxExplicit convection is associated with stronger updrafts and gravity wave sourcesSpectral changes result from more variable precipitation in the simulation with explicit convection [ABSTRACT FROM AUTHOR]
Copyright of Journal of Geophysical Research. Atmospheres is the property of Wiley-Blackwell 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.)
Database: GreenFILE
FullText Text:
  Availability: 0
Header DbId: 8gh
DbLabel: GreenFILE
An: 136466103
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Gravity Waves in Global High‐Resolution Simulations With Explicit and Parameterized Convection.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Stephan%2C+C%2E+C%2E%22">Stephan, C. C.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Schmidt%2C+H%2E%22">Schmidt, H.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Strube%2C+C%2E%22">Strube, C.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Ern%2C+M%2E%22">Ern, M.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Hoffmann%2C+L%2E%22">Hoffmann, L.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Preusse%2C+P%2E%22">Preusse, P.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Klocke%2C+D%2E%22">Klocke, D.</searchLink><relatesTo>3</relatesTo>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Journal+of+Geophysical+Research%2E+Atmospheres%22">Journal of Geophysical Research. Atmospheres</searchLink>. 4/27/2019, Vol. 124 Issue 8, p4446-4459. 14p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Convection+%28Meteorology%29%22">Convection (Meteorology)</searchLink><br />*<searchLink fieldCode="DE" term="%22Ozone+layer%22">Ozone layer</searchLink><br /><searchLink fieldCode="DE" term="%22Gravity+waves%22">Gravity waves</searchLink><br /><searchLink fieldCode="DE" term="%22Simulation+methods+%26+models%22">Simulation methods & models</searchLink><br /><searchLink fieldCode="DE" term="%22Spatiotemporal+processes%22">Spatiotemporal processes</searchLink><br /><searchLink fieldCode="DE" term="%22Parameterization%22">Parameterization</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Increasing computing resources allow us to run weather and climate models at horizontal resolutions of 1–10 km. At this range, which is often referred to as the convective gray zone, clouds and convective transport are partly resolved, yet models may not achieve a satisfactory performance without convective parameterizations. Meanwhile, large fractions of the gravity wave (GW) spectrum become resolved at these scales. Convectively generated GWs are sensitive to spatiotemporal characteristics of convective cells. This raises the question of how resolved GWs respond to changes in the treatment of convection. Two global simulations with a horizontal grid spacing of 5 km are performed, one with explicit and one with parameterized convection. The latitudinal profiles of absolute zonal‐mean GW momentum flux match well between both model configurations and observations by satellite limb sounders. However, the simulation with explicit convection shows ∼30–50% larger zonal‐mean momentum fluxes in the summer hemisphere subtropics, where convection is the dominant source of GWs. Our results imply that changes in convection associated with the choice of explicit versus parameterized convection can have important consequences for resolved GWs, with broad implications for the circulation and the transport in the middle atmosphere. Key Points: Parameterized convection reduces the stratospheric zonal‐mean zonal gravity wave momentum fluxExplicit convection is associated with stronger updrafts and gravity wave sourcesSpectral changes result from more variable precipitation in the simulation with explicit convection [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Geophysical Research. Atmospheres is the property of Wiley-Blackwell 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.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=8gh&AN=136466103
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1029/2018JD030073
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 14
        StartPage: 4446
    Subjects:
      – SubjectFull: Convection (Meteorology)
        Type: general
      – SubjectFull: Ozone layer
        Type: general
      – SubjectFull: Gravity waves
        Type: general
      – SubjectFull: Simulation methods & models
        Type: general
      – SubjectFull: Spatiotemporal processes
        Type: general
      – SubjectFull: Parameterization
        Type: general
    Titles:
      – TitleFull: Gravity Waves in Global High‐Resolution Simulations With Explicit and Parameterized Convection.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Stephan, C. C.
      – PersonEntity:
          Name:
            NameFull: Schmidt, H.
      – PersonEntity:
          Name:
            NameFull: Strube, C.
      – PersonEntity:
          Name:
            NameFull: Ern, M.
      – PersonEntity:
          Name:
            NameFull: Hoffmann, L.
      – PersonEntity:
          Name:
            NameFull: Preusse, P.
      – PersonEntity:
          Name:
            NameFull: Klocke, D.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 27
              M: 04
              Text: 4/27/2019
              Type: published
              Y: 2019
          Identifiers:
            – Type: issn-print
              Value: 2169897X
          Numbering:
            – Type: volume
              Value: 124
            – Type: issue
              Value: 8
          Titles:
            – TitleFull: Journal of Geophysical Research. Atmospheres
              Type: main
ResultId 1