Multiscale Modeling Framework Using Element‐Based Galerkin Methods for Moist Atmospheric Limited‐Area Simulations
Abstract This paper presents a multiscale modeling framework (MMF) to model moist atmospheric limited‐area weather. The MMF resolves large‐scale convection using a coarse grid while simultaneously resolving local features through numerous fine local grids and coupling them seamlessly. Both large‐ an...
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| Format: | Article |
| Language: | English |
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American Geophysical Union (AGU)
2025-07-01
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| Series: | Journal of Advances in Modeling Earth Systems |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2024MS004453 |
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| author | Soonpil Kang James F. Kelly Anthony P. Austin Francis X. Giraldo |
| author_facet | Soonpil Kang James F. Kelly Anthony P. Austin Francis X. Giraldo |
| author_sort | Soonpil Kang |
| collection | DOAJ |
| description | Abstract This paper presents a multiscale modeling framework (MMF) to model moist atmospheric limited‐area weather. The MMF resolves large‐scale convection using a coarse grid while simultaneously resolving local features through numerous fine local grids and coupling them seamlessly. Both large‐ and small‐scale processes are modeled using the compressible Navier‐Stokes equations within the Nonhydrostatic Unified Model of the Atmosphere (NUMA), and are discretized using a continuous element‐based Galerkin method (spectral elements) with high‐order basis functions. Consequently, the large‐scale and small‐scale models share the same dynamical core but have the flexibility to be adjusted individually. The proposed MMF method is tested in 2D and 3D idealized limited‐area weather problems involving storm clouds produced by squall line and supercell simulations. Numerical results from the MMF showed enhanced representation of cloud processes compared to the coarse model. |
| format | Article |
| id | doaj-art-ecbca8170f63454da36ed26bea4da8c9 |
| institution | DOAJ |
| issn | 1942-2466 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | American Geophysical Union (AGU) |
| record_format | Article |
| series | Journal of Advances in Modeling Earth Systems |
| spelling | doaj-art-ecbca8170f63454da36ed26bea4da8c92025-08-20T03:09:19ZengAmerican Geophysical Union (AGU)Journal of Advances in Modeling Earth Systems1942-24662025-07-01177n/an/a10.1029/2024MS004453Multiscale Modeling Framework Using Element‐Based Galerkin Methods for Moist Atmospheric Limited‐Area SimulationsSoonpil Kang0James F. Kelly1Anthony P. Austin2Francis X. Giraldo3Department of Applied Mathematics Naval Postgraduate School Monterey CA USASpace Science Division U.S. Naval Research Laboratory Washington DC USADepartment of Applied Mathematics Naval Postgraduate School Monterey CA USADepartment of Applied Mathematics Naval Postgraduate School Monterey CA USAAbstract This paper presents a multiscale modeling framework (MMF) to model moist atmospheric limited‐area weather. The MMF resolves large‐scale convection using a coarse grid while simultaneously resolving local features through numerous fine local grids and coupling them seamlessly. Both large‐ and small‐scale processes are modeled using the compressible Navier‐Stokes equations within the Nonhydrostatic Unified Model of the Atmosphere (NUMA), and are discretized using a continuous element‐based Galerkin method (spectral elements) with high‐order basis functions. Consequently, the large‐scale and small‐scale models share the same dynamical core but have the flexibility to be adjusted individually. The proposed MMF method is tested in 2D and 3D idealized limited‐area weather problems involving storm clouds produced by squall line and supercell simulations. Numerical results from the MMF showed enhanced representation of cloud processes compared to the coarse model.https://doi.org/10.1029/2024MS004453multiscale modeling frameworksuperparameterizationcompressible Navier‐Stokes equationsprecipitation microphysicselement‐based Galerkin methodnumerical weather prediction |
| spellingShingle | Soonpil Kang James F. Kelly Anthony P. Austin Francis X. Giraldo Multiscale Modeling Framework Using Element‐Based Galerkin Methods for Moist Atmospheric Limited‐Area Simulations Journal of Advances in Modeling Earth Systems multiscale modeling framework superparameterization compressible Navier‐Stokes equations precipitation microphysics element‐based Galerkin method numerical weather prediction |
| title | Multiscale Modeling Framework Using Element‐Based Galerkin Methods for Moist Atmospheric Limited‐Area Simulations |
| title_full | Multiscale Modeling Framework Using Element‐Based Galerkin Methods for Moist Atmospheric Limited‐Area Simulations |
| title_fullStr | Multiscale Modeling Framework Using Element‐Based Galerkin Methods for Moist Atmospheric Limited‐Area Simulations |
| title_full_unstemmed | Multiscale Modeling Framework Using Element‐Based Galerkin Methods for Moist Atmospheric Limited‐Area Simulations |
| title_short | Multiscale Modeling Framework Using Element‐Based Galerkin Methods for Moist Atmospheric Limited‐Area Simulations |
| title_sort | multiscale modeling framework using element based galerkin methods for moist atmospheric limited area simulations |
| topic | multiscale modeling framework superparameterization compressible Navier‐Stokes equations precipitation microphysics element‐based Galerkin method numerical weather prediction |
| url | https://doi.org/10.1029/2024MS004453 |
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