Publication Date:
2014-04-17
Description:
A high-order incremental 'remap-type' transport scheme is presented (FF-CSLAM). The scheme utilizes bi-quadratic polynomial sub-grid-cell reconstruction functions based on the weighted least-squares method. The integration of the reconstruction functions over flux-areas, which is inherent in remap schemes, makes use of CSLAM approach of line integration. Though the formal order of the scheme is second order yet quadratic sub-grid scale polynomial reconstruction does lead to improvement in the overall accuracy of the scheme. Since the rigorous search for overlap areas between flux-areas and grid cells is cumbersome two simplifications have been suggested in the literature. The main objectives in this paper is a) to formulate flux-form CSLAM for the icosahedral-hexagonal grid; and b) to assess the accuracy of two flux-integral simplifications, as discussed in the paper.
Electronic ISSN:
1942-2466
Topics:
Geography
,
Geosciences
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