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Updated: Jun 19, 2026
10:05
Fast Grid Preparation for Time-Resolved Cryo-Electron Microscopy
Published on: November 6, 2021
Block-structured adaptive meshes and reduced grids for atmospheric general circulation models.
Christiane Jablonowski1, Robert C Oehmke, Quentin F Stout
1Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, MI 48109, USA. cjablono@umich.edu
Summary
Adaptive mesh refinement in climate models offers flexibility. Reduced grids are useful for advection but require caution in nonlinear simulations, while static adaptations effectively capture baroclinic waves.
Area of Science:
- Atmospheric Science
- Computational Fluid Dynamics
- Climate Modeling
Background:
- Adaptive mesh refinement (AMR) provides flexible resolution for climate and weather models.
- AMR can coarsen grids in polar regions, creating reduced grid setups.
- Existing dynamical cores can be enhanced with adaptive grid techniques.
Purpose of the Study:
- To apply a spherical, block-structured AMR technique to the Lin-Rood finite-volume dynamical core.
- To investigate the performance of static mesh adaptations and reduced grids.
- To evaluate the suitability of these techniques for weather and climate research.
Main Methods:
- Implementation of a hydrostatic dynamics package using conservative and monotonic finite-volume discretization.
- Development of an adaptive dynamical core on a flexible latitude-longitude grid.
- Testing in two- and three-dimensional model configurations using shallow water test cases.
Main Results:
- Reduced grid configurations show viability for pure advection but need moderate use in nonlinear simulations.
- Static grid adaptations successfully resolve three-dimensional baroclinic waves in storm-track regions.
- Testing included advection of a cosine bell, moving vortices, steady-state flow, Rossby-Haurwitz wave, and cross-polar flows.
Conclusions:
- Adaptive mesh refinement offers a flexible framework for variable-resolution climate and weather models.
- Reduced grids are suitable for specific applications like advection, but nonlinear dynamics require careful consideration.
- Static grid adaptations are effective for resolving key atmospheric phenomena like baroclinic waves.
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