Support for Emerging Climate and Forecast Grid Conventions in the Earth System Modeling Framework

07/26/2011 - 2:25pm to 2:50pm
Main Seminar Room - ML
Anthony Wong

Anthony Wong, University of Colorado, Boulder

Abstract:  We have increased the functionality of the Earth System Modeling Framework (ESMF) by adding support for proposed Climate and Forecasting (CF) conventions for unstructured grids and multi-patch logically rectangular grids. This new capability enables modelers to share, analyze, visualize, remap and inter-compare data more easily.  Multi-patch logically rectangular grids are handled by the CF GridSpec convention. Users may now create an ESMF Grid object from a GridSpec format netCDF file as well as write an ESMF Grid object to a GridSpec netCDF file. Support is provided for one to four spatial dimensions and staggering at cell corners or centers. This enables users to read GridSpec grids into ESMF and then to employ them in a model or with other ESMF utilities such as regridding. The ESMF Grid interface may also be applied to define a grid and output it to the GridSpec format, allowing standardized sharing of grid information among users. Additionally, we have begun to develop support for the emerging UGRID CF unstructured format by providing functionality to allow users to read in UGRID netCDF grids of two or three spatial dimensions and to create ESMF Mesh objects from them. This capability permits users who have their meshes in this format to easily use ESMF mesh capabilities such as regridding.

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Presented on July 26, 2011 at NCAR