An updated interparcel mixing algorithm in the Lagrangian advection scheme with shape matrix (LASM) v0.2
Author:
Dong L.,Wang B.,Liu L.
Abstract
Abstract. The interparcel mixing algorithm in the Lagrangian advection scheme with shape matrix (LASM) is updated to make the scheme more robust. The linear degeneration criterion is replaced by the maximum deviation of the skeleton points so that the new algorithm is more effective in controlling the shape of parcels, which is vital for long time simulation. LASM is inherently shape-preserving without any complicated filter or limiter, so it is linear. This fact contributes to the ability of LASM of preserving the sum of multiple tracers exactly. A newly proposed terminator "toy"-chemistry test is also used to test LASM, which shows that LASM can preserve the weighted sum of two reactive chlorine-like species precisely.
Funder
National Natural Science Foundation of China
Publisher
Copernicus GmbH
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