Articles | Volume 14, issue 11
Geosci. Model Dev., 14, 6919–6944, 2021
Geosci. Model Dev., 14, 6919–6944, 2021
Development and technical paper
16 Nov 2021
Development and technical paper | 16 Nov 2021

Topography-based local spherical Voronoi grid refinement on classical and moist shallow-water finite-volume models

Luan F. Santos and Pedro S. Peixoto

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Cited articles

Amante, C. and Eakins, B.: ETOPO1 1 Arc-Minute Global Relief Model: procedures, data sources and analysis, NOAA National Centers for Environmental Information [data set],, 2009. a, b, c, d
Barros, S. and Garcia, C.: A Global Semi-Implicit Semi-Lagrangian Shallow-Water Model on Locally Refined Grids, Mon. Weather Rev., 132, 53–65,<0053:AGSSSM>2.0.CO;2, 2004. a
Behrens, J.: Adaptive Atmospheric Modeling-Key Techniques in Grid Generation, Data Structures, and Numerical Operations with Applications, Lecture Notes in Computational Science and Engineering, vol. 54, Springer, Berlin, Germany, 2006. a
Brachet, M. and Croisille, J.-P.: Spherical shallow-water wave simulation by a cubed-sphere finite-difference solver, Q. J. Roy. Meteor. Soc., 147, 786–800,, 2021. a
Chou, S. C., Dereczynski, C., Gomes, J. L., Pesquero, J. F., Avila, A. M. H. d., Resende, N. C., Alves, L. F., Ruiz-Cárdenas, R., Souza, C. R. d., and Bustamante, J. F. F.: Ten-year seasonal climate reforecasts over South America using the Eta Regional Climate Model, An. Acad. Bras. Cienc., 92, 3,, 2020. a
Short summary
The Andes act as a wall in atmospheric flows and play an important role in the weather of South America but are currently underrepresented in weather and climate models. In this work, we propose grids that better capture the mountains and, using idealized dynamical models, study the effects caused by the use of such grids. While possibly improving forecasts for short periods, the grids introduce spurious numerical (nonphysical) effects, which can demand added caution from model developers.