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MPAS Ocean User's Guide V6

Petersen, Mark; Asay-Davis, Xylar; Jacobsen, Douglas; Maltrud, Mathew; Ringler, Todd; Van Roekel, Luke; Wolfram, Phillip

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    <subfield code="a">&lt;p&gt;The Model for Prediction Across Scales-Ocean (MPAS-Ocean) is an unstructured-mesh ocean model&lt;/p&gt;

&lt;p&gt;capable of using enhanced horizontal resolution in selected regions of the ocean domain. Model&lt;/p&gt;

&lt;p&gt;domains may be spherical with bottom topography to simulate the earth&amp;#39;s oceans, or on Cartesian&lt;/p&gt;

&lt;p&gt;domains for idealized experiments. The global meshes, created using Spherical Centroidal Voronoi&lt;/p&gt;

&lt;p&gt;Tesselations (Ringler et al., 2008, 2011) consist of gridcells that vary smoothly from low to high&lt;/p&gt;

&lt;p&gt;resolution regions. Numerical algorithms specially designed for these grids guarantee that mass,&lt;/p&gt;

&lt;p&gt;tracers, potential vorticity (in isopycnal mode) and energy are conserved (Thuburn et al., 2009;&lt;/p&gt;

&lt;p&gt;Ringler et al., 2010). MPAS-Ocean high-resolution and variable-resolution global simulations, as&lt;/p&gt;

&lt;p&gt;well as descriptions of mesh generation, model capabilities, and algorithms, are presented in Ringler&lt;/p&gt;

&lt;p&gt;et al. (2013a). The vertical grid is detailed in Petersen et al. (2014), including the Arbitrary&lt;/p&gt;

&lt;p&gt;Lagrangian Eulerian method, a variety of vertical coordinates, and results from five test cases.&lt;/p&gt;

&lt;p&gt;MPAS-Ocean is one component within the MPAS framework of climate models that is devel-&lt;/p&gt;

&lt;p&gt;oped in cooperation between Los Alamos National Laboratory (LANL) and the National Center&lt;/p&gt;

&lt;p&gt;for Atmospheric Research (NCAR). Functionality that is required by all cores, such as i/o, time&lt;/p&gt;

&lt;p&gt;management, block decomposition, etc, is developed collaboratively, and this code is shared across&lt;/p&gt;

&lt;p&gt;cores within the same repository. Each core then solves its own differential equations and physical&lt;/p&gt;

&lt;p&gt;parameterizations within this framework. This user&amp;#39;s guide reflects the spirit of this collaborative&lt;/p&gt;

&lt;p&gt;process, where Part I, &amp;quot;The MPAS Framework&amp;quot;, applies to all cores, and the remaining parts apply&lt;/p&gt;

&lt;p&gt;to MPAS-Ocean.&lt;/p&gt;


&lt;p&gt;This release of the ocean model corresponds with the initial release of the Energy Exascale&lt;/p&gt;

&lt;p&gt;Earth System Model (E3SM) by the U.S. Department of Energy (see E3SM&lt;/p&gt;

&lt;p&gt;includes MPAS components for ocean, sea ice, and land ice. Each component may be run as a&lt;/p&gt;

&lt;p&gt;stand-alone model, or coupled within E3SM. MPAS-Ocean now includes biogeochemistry modules,&lt;/p&gt;

&lt;p&gt;and the ability to control groups of tracers.&lt;/p&gt;


&lt;p&gt;Information about MPAS-Ocean, including the most recent code, user&amp;#39;s guide, and test cases,&lt;/p&gt;

&lt;p&gt;may be found at This user&amp;#39;s guide refers to MPAS-Ocean version 6.&lt;/p&gt;</subfield>
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