Journal cover Journal topic
Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/gmd-2018-21
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Development and technical paper
29 Mar 2018
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Geoscientific Model Development (GMD).
Adaptive Cartesian Meshes for Atmospheric Single-Column Models, a study using Basilisk 18-02-16
J. Antoon van Hooft1, Stéphane Popinet2, and Bas J. H. van de Wiel1 1Delft University of Technology, Department of Geoscience and Remote Sensing, Delft, the Netherlands
2Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7190, Institut Jean Le Rond d’Alembert, Paris, France
Abstract. It is well known that the representation of certain atmospheric conditions in climate and weather models can still suffer from the limited grid resolution that is facilitated by modern-day computer systems. Herein we study a simple one-dimensional analogy to those models by using a Single-Column Model (SCM) description of the atmosphere. The model employs an adaptive Cartesian mesh that applies a high-resolution mesh only when and where it is required. The so-called adaptive-grid model is described and we report on our findings obtained for tests to evaluate the representation of the atmospheric boundary layer, based on the first two GABLS intercomparison cases. The analysis shows that the adaptive-grid algorithm is able to dynamically coarsen and refine the numerical grid whilst maintaining an accurate solution. This is an interesting result as in reality, transitional dynamics (e.g. due to the diurnal cycle or due to changing synoptic conditions) are rule rather than exception.
Citation: van Hooft, J. A., Popinet, S., and van de Wiel, B. J. H.: Adaptive Cartesian Meshes for Atmospheric Single-Column Models, a study using Basilisk 18-02-16, Geosci. Model Dev. Discuss., https://doi.org/10.5194/gmd-2018-21, in review, 2018.
J. Antoon van Hooft et al.
J. Antoon van Hooft et al.

Model code and software

Basilisk 18-02-16 S. Popinet https://doi.org/10.5281/zenodo.1203631
J. Antoon van Hooft et al.

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Short summary
In this work the usage of adaptive Cartesian meshes in atmospheric single-column models is explored. Results are presented for test scenarios based on the first two GABLS inter comparison studies. Consistent with existing literature, we conclude that the method is promising and future atmospheric modeling efforts would warrant the extension of the present techniques to a three-dimensional grid.
In this work the usage of adaptive Cartesian meshes in atmospheric single-column models is...
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