.. MPAS Atmosphere documentation master file, created by
   sphinx-quickstart on Thu Oct 12 17:40:05 2023.
   You can adapt this file completely to your liking, but it should at least
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===============================================
Model for Prediction Across Scales - Atmosphere
===============================================

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      The atmospheric component of MPAS uses an unstructured centroidal Voronoi mesh (grid, or tessellation) and C-grid staggering of the state variables as the basis for the horizontal discretization in the fluid-flow solver. The unstructured variable resolution meshes can be generated having smoothly-varying mesh transitions (see figure *(a)* below), which ameliorates many issues associated with the traditional mesh refinement strategy of one-way and two-way grid nesting where the transitions are abrupt. The flexibility of the MPAS meshes allows for applications in high-resolution numerical weather prediction (NWP) and regional climate, in addition to global uniform-resolution NWP and climate applications.

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         .. figure:: ./images/mpas_mesh.png
            :width: 350

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            .. rubric:: `Documentation & Resources <documentation.html>`_

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            `Overview of MPAS-A <./mpas_overview.html>`_ |br|
            `MPAS-A User Guide <./documentation/users_guide.html>`_ |br|
            `MPAS-A Code Contributor Guide <documentation/contributor_guide.html>`_ |br|
            `MPAS Mesh Specification <https://www2.mmm.ucar.edu/mpas/projects/mpas/mpas_website_linked_files/mpas_meshspec.pdf>`_ |br|
            `MPAS-A Tutorial Practice Guide <https://www2.mmm.ucar.edu/projects/mpas/tutorial/Virtual2024/>`_ 
            
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            .. rubric:: `Access Code <https://www2.mmm.ucar.edu/projects/mpas/mpas_website/build/html/access_code.html>`__

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            Information and links to MPAS-A source code, static geographical datasets, meshes, and input files for real-data and idealized test cases

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            .. rubric:: `GPU-enabled MPAS-A <https://www2.mmm.ucar.edu/projects/mpas/mpas_website/build/html/gpu_mpas.html>`__

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            Documentation specific to GPU-enabled MPAS-A, including important notes, supported platforms, obtaining, compiling, and running GPU-enabled MPAS. 


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            .. rubric:: `Visualization and Analysis Tools <https://www2.mmm.ucar.edu/projects/mpas/mpas_website/build/html/visualization.html>`__

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            Example scripts for plotting MPAS-A simulation output |br| |br| |br|



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            .. rubric:: `News & Events <https://www2.mmm.ucar.edu/projects/mpas/mpas_website/build/html/news_events.html>`_

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            Find announcements and details about MPAS-A Workshops and Tutorials (including a tutorial practice guide)

  

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            .. rubric:: `Publications <https://www2.mmm.ucar.edu/projects/mpas/mpas_website/build/html/publications.html>`_

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            Access a list of known MPAS-relevant publications, as well as non peer-reviewed presentations 

            
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            .. rubric:: Other Flavors of MPAS

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            Access other MPAS systems, managed by groups outside of NSF NCAR

            *   `MPAS Data Assimilation <./mpas_da.html>`_
            *   `MPAS-Albany Land Ice <./mpas_albany_land_ice.html>`_
            *   `MPAS-Ocean <./mpas_ocean.html>`_
            *   `MPAS-Seaice <./mpas_seaice.html>`_
   


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.. toctree::
   :maxdepth: 4 
   :hidden:

   Documentation <documentation.rst>
   Access Code <access_code.rst>
   GPU-enabled MPAS-A <gpu_mpas.rst>
   Visualization <visualization.rst>
   News & Events <news_events.rst> 
   Publications <publications.rst>








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