August 2018, Milan Kloewer (milan.kloewer@physics.ox.ac.uk, www.milank.de)

This directory contains all data needed to reproduce

    Kloewer et al 2018, Energy budget-based backscatter in a shallow water model of a double gyre basin, Ocean Modelling.

The shallow water model that was used to create theses data sets can be found on github

    github.com/milankl/swm

with the master branch being the control setting and the backscatter branch contains the backscatter implementation as described in the manuscript. Version 1.0 of the github repository also has a doi https://doi.org/10.5281/zenodo.1403130

The model has three prognostic variables u,v,eta (saved as u.nc, v.nc, eta.nc) that entirely determine the prognostic state. For backscatter runs an additional variable e saved as e.nc exists. Further information can be found in the netcdf header. Additionally every run folder named runXXXX also contains file scripts.zip which is an exact copy of the github repository at the time when the model run was initialised.
Run folders might contain a folder called

    "analysis", which contains .npy files that were created with the analysis scripts in the github repository (github.com/milankl/swm/calc)

    "plots", which contain pictures of the last state of the model run, only used for feedback

The files info.txt served feedback purposes while the model was running. The files param.npy, param.txt contain the same parameter information as in scripts.zip, and in the netcdf headers and were only created for convenience.

Contents

swm_control/

    run0000

        This is the low resolution model run as described in the manuscript.

    run0001-run0006

        This is the high resolution model run as described in the manuscript. The data is split into 5-year chunks to avoid large file sizes. Note: The last time step of a given folder is the initial condition of the next.

    run0007, run0009

        This is a very high resolution model run (dx=3.75km, 1024x1024 grid points) not described in the manuscript. This model run covers only two years of data and was performed for supplementary analysis.

    run0008

        This is a medium resolution model run (dx=15km, 256x256 grid points) not described in the manuscript and performed for supplementary analysis. Only five years of data are covered. Free-slip boundary conditions are used.

    run0010

        This is a very low resolution model run (dx=60km, 64x64 grid points) not described in the manuscript and performed for supplementary analysis.

    run0011

        This is a medium resolution model run (dx=15km, 256x256 grid points) not described in the manuscript and performed for supplementary analysis. Only ten years of data are covered. In contrast to run0008, no-slip boundary conditions are used.

    run0012

        This is a coarse resolution model run (dx=120km, 32x32 grid points) not described in the manuscript and performed for supplementary analysis. Only ten years of data are covered due to weak variability.

swm_backscatter/

    The resolution is fixed to dx=30km, 128x128 grid points.
    The backscatter diffusion nu_e is 540m^2/s^2 unless otherwise stated.
    The variable backscatter strength Rdiss is described in the manuscript.

    The comments contain either the name of this model run as described in the manuscript
    or runs have not been mentioned in the manuscript but were performed for supplementary analysis.


    Run id      Rdiss       nu_e            comment
    0000        1                           LR + weak backscatter
    0001        2                           not used in the manuscript
    0002        6                           not used in the manuscript
    0003        8                           LR + moderate backscatter
    0004        infinity                    not used in the manuscript
    0005        8           5400m^2/s^2     only mentioned in Chapter 3.2
    0006        16                          not used in the manuscript
    0007        32                          not used in the manuscript
    0008        64                          LR + strong backscatter