Vertical Velocity in the Gray Zone
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Vertical Velocity in the Gray Zone
  • Published Date:

    2017

  • Source:
    Journal of Advances in Modeling Earth Systems, 9(6), 2304-2316.
Filetype[PDF-778.07 KB]


Details:
  • Personal Author:
    Jeevanjee, N.
  • Description:
    We describe how convective vertical velocities w(c) vary in the "gray zone'' of horizontal resolution, using both hydrostatic and nonhydrostatic versions of GFDL's FV3 dynamical core, as well as analytical solutions to the equations of motion. We derive a simple criterion (based on parcel geometries) for a model to resolve convection, and find that O(100 m) resolution can be required for convergence of w(c). We also find, both numerically and analytically, that hydrostatic systems overestimate w(c), by a factor of 2-3 in the convection-resolving regime. This overestimation is simply understood in terms of the "effective buoyancy pressure'' of Jeevanjee and Romps (2015, 2016).
  • DOI:
    http://dx.doi.org/10.1002/2017ms001059
  • Document Type:
    Journal Article
  • Funding:
    Grant no. NA14OAR4320106
  • Collection(s):
    NOAA Cooperative Institutes
    Office of Oceanic and Atmospheric Research (OAR)
  • Main Document Checksum:
  • File Type:
  • Supporting Files:
    No Additional Files
    1. Filetype[PDF - 8.04 MB]
      Personal Author:
      Song, Z. Y.; Lee, S. K.; Wang, C. Z.; Kirtman, B. P.; Qiao, F. L.;
      Published Date:
      2015
      Source:
      Ocean Modelling, 96, 280-290.
      Description:
      In order to identify and quantify intrinsic errors in the atmosphere-land and ocean-sea ice model components of the Community Earth System Model version 1 (CESM1) and their contributions to the tropical Atlantic sea surface temperature (SST) bias in ...
      File Type:
      Filetype[PDF - 8.04 MB]

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