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navidcy committed May 14, 2024
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Expand Up @@ -79,6 +79,8 @@ Pertinent for our discussion, MOM6 provides support for open boundary conditions
However, setting up a regional configuration for MOM6 can be challenging, time consuming, and often involves using several programming languages, a few different tools, and also manually editing/tweaking some input files.
The `regional-mom6` package overcomes these difficulties, automatically generating a regional MOM6 configuration of the user's choice with relatively simple domain geometry, that is, rectangular domains.

![Snapshot of the ocean surface speed from a two-tier, one-way nested regional ocean configurations of the East Australian Current. The outer regional configuration uses 1/10ᵒ horizontal resolution, 75 vertical levels, and is forced by the output from the global ocean--sea ice model at 1/10ᵒ horizontal resolution (ACCESS-OM2-01; @ACCESS-OM2). The inner regional configuration uses 1/30ᵒ horizontal resolution, 100 vertical levels, and is forced with the outer regional model. All simulations share a common inter-annual atmospheric forcing from 1990 to 2018 provided by the JRA55-do reanalysis [@Tsujino2018].\label{fig:tasman}](nested-regional-mom6.pdf){ width=80% }

## `regional-mom6`

The `regional-mom6` package takes as input various datasets that contain the ocean initial condition, the boundary forcing (ocean and atmosphere) for the regional domain, and the seafloor topography.
Expand All @@ -92,8 +94,6 @@ Additionally, the tricky case of a regional configuration that includes the 'sea
This automation allows users to set up a regional MOM6 configuration using only Python and from the convenience of a single Jupyter notebook.
@Herzfeld2011 provide rules of thumb to guide the user in setting regional grid parameters such as the resolution.

![Snapshot of the ocean surface speed from a two-tier, one-way nested regional ocean configurations of the East Australian Current. The outer regional configuration uses 1/10ᵒ horizontal resolution, 75 vertical levels, and is forced by the output from the global ocean--sea ice model at 1/10ᵒ horizontal resolution (ACCESS-OM2-01; @ACCESS-OM2). The inner regional configuration uses 1/30ᵒ horizontal resolution, 100 vertical levels, and is forced with the outer regional model. All simulations share a common inter-annual atmospheric forcing from 1990 to 2018 provided by the JRA55-do reanalysis [@Tsujino2018].\label{fig:tasman}](nested-regional-mom6.pdf){ width=90% }

`regional-mom6` is installable via `conda`, it is continuously tested, and comes with extensive documentation including tutorials and examples for setting up regional MOM6 configurations using publicly-available forcing and bathymetry datasets (namely, the GLORYS dataset for ocean boundary forcing [@glorys], the ERA5 reanalysis for atmospheric forcing [@era5], and the GEBCO dataset for seafloor topography [@gebco]).

With the entire process for setting up a regional configuration streamlined to run within a Jupyter notebook, the package dramatically reduces the barrier-to-entry for first-time users, or those without a strong background in Fortran, experience in compiling and running scripts in terminals, and manipulating netCDF files.
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