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DOE OSTI · 1233708

Chemistry in CESM-SE: Evaluation, Performance and Optimization

Lamarque, Jean-Francois·Conley, Andrew·Vitt, Francis·Drake, John·Sun, Jian
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Abstract

The purpose of the proposed work focused on development of chemistry representation within the Spectral Element (SE) dynamical core as implemented in the Community Earth System Model (CESM). More specifically, a main focus was on the ability of SE to accurately represent tracer transport. The proposed approach was to incrementally increase the complexity of the problem, starting from specified two-dimensional flow and tracers to simulations using specified dynamics and full chemistry. As demonstrated below, we have successfully studied all aspects of the proposed work, although only part of the work has been published in the refereed literature so far. Furthermore, because the SE dynamical core has been found to have several deficiencies that are still being investigated for solution, not all proposed tasks were finalized. In addition to the tests for SE performance, in an effort to decrease the computational burden of interactive chemistry, especially in the case of a large number of chemical species and chemical reactions, development on a faster chemical solver and implementation on GPUs has been implemented in CESM under the leadership of John Drake (U. Tennessee).

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Lamarque, Jean-Francois, Conley, Andrew, Vitt, Francis, Drake, John, Sun, Jian. 2016-01-06. Chemistry in CESM-SE: Evaluation, Performance and Optimization. https://doi.org/10.2172/1233708

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