Articles | Volume 8, issue 12
Geosci. Model Dev., 8, 3975–3986, 2015
https://doi.org/10.5194/gmd-8-3975-2015
Geosci. Model Dev., 8, 3975–3986, 2015
https://doi.org/10.5194/gmd-8-3975-2015

Model description paper 14 Dec 2015

Model description paper | 14 Dec 2015

NCAR_Topo (v1.0): NCAR global model topography generation software for unstructured grids

P. H. Lauritzen1, J. T. Bacmeister1, P. F. Callaghan1, and M. A. Taylor2 P. H. Lauritzen et al.
  • 1National Center for Atmospheric Research, 1850 Table Mesa Drive, Boulder, Colorado, USA
  • 2Sandia National Laboratories, Albuquerque, New Mexico, USA

Abstract. It is the purpose of this paper to document the NCAR global model topography generation software for unstructured grids (NCAR_Topo (v1.0)). Given a model grid, the software computes the fraction of the grid box covered by land, the grid-box mean elevation (deviation from a geoid that defines nominal sea level surface), and associated sub-grid-scale variances commonly used for gravity wave and turbulent mountain stress parameterizations. The software supports regular latitude–longitude grids as well as unstructured grids, e.g., icosahedral, Voronoi, cubed-sphere and variable-resolution grids.

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Short summary
This paper documents the NCAR global model topography generation software. The software generates elevation and related data for global atmospheric models based in GTOPO30 or GMTED2010/MODIS source data.