Held-Suarez simulations with the Community Atmosphere Model Spectral Element (CAM-SE) dynamical core: A global axial angular momentum analysis using Eulerian and floating Lagrangian vertical coordinates

AMS Citation:
Lauritzen, P. H., J. Bacmeister, T. Dubos, S. Lebonnois, and M. A. Taylor, 2014: Held-Suarez simulations with the Community Atmosphere Model Spectral Element (CAM-SE) dynamical core: A global axial angular momentum analysis using Eulerian and floating Lagrangian vertical coordinates. Journal of Advances in Modeling Earth Systems, 6, 129-140, doi:10.1002/2013MS000268.
Date:2014-03-01
Resource Type:article
Title:Held-Suarez simulations with the Community Atmosphere Model Spectral Element (CAM-SE) dynamical core: A global axial angular momentum analysis using Eulerian and floating Lagrangian vertical coordinates
Abstract: In this paper, an analysis of the global AAM conservation properties of NCAR's Community Atmosphere Model Spectral Element (CAM-SE) dynamical core under Held-Suarez forcing is presented. It is shown that the spurious sources/sinks of AAM in CAM-SE are 3 orders of magnitude smaller than the parameterized (physical) sources/sinks. The effect on AAM conservation by changing various numerical aspects of the dynamical core (e.g., different vertical coordinates, reduced formal order of accuracy, increased dissipation, and decreased divergence damping) is investigated. In particular, it is noted that changing from Eulerian (hybrid-sigma) to floating Lagrangian vertical coordinates does not alter the global AAM conservation properties of CAM-SE.
Peer Review:Refereed
Copyright Information:Copyright 2014 American Geophysical Union.
OpenSky citable URL: ark:/85065/d7bc40gt
Publisher's Version: 10.1002/2013MS000268
Author(s):
  • Peter Lauritzen - NCAR/UCAR
  • Julio Bacmeister - NCAR/UCAR
  • Thomas Dubos
  • Sebastien Lebonnois
  • Mark Taylor
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