{
  "cells": [
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "\n# Euler simulation / Finite difference of blob with the Norkyst nordic ocean model\n"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "collapsed": false
      },
      "outputs": [],
      "source": [
        "import logging\nimport opendrift\nimport matplotlib.pyplot as plt\nfrom opendrift.readers import reader_netCDF_CF_generic\nfrom opendrift.models.basemodel import OpenDriftSimulation\nfrom opendrift.models import eulerdrift\n\n\nlogging.getLogger('opendrift').setLevel(logging.DEBUG)\neulerdrift.install_logs() #remove\n\nreader_norkyst = reader_netCDF_CF_generic.Reader('https://thredds.met.no/thredds/dodsC/sea/norkyst800m/1h/aggregate_be')\n# reader_norkyst = reader_netCDF_CF_generic.Reader(OpenDriftSimulation.test_data_folder(None) +  '16Nov2015_NorKyst_z_surface/norkyst800_subset_16Nov2015.nc')\nlon0, lat0 = reader_norkyst.xy2lonlat(reader_norkyst.xmin, reader_norkyst.ymin)\n\ns = eulerdrift.ExplSimulation.new(5.21, 60.19, 10., shape = (400, 400))\ns.t0 = reader_norkyst.start_time\ns.readers.append(eulerdrift.OpendriftReader(reader_norkyst))\n\nprint(s.U(0.0))\n\nloc, lac = s.grid.center()\ns.source_gaussian_blob(loc, lac, 1., 100, 50.)"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "Plot the initial conditions\n\n"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "collapsed": false
      },
      "outputs": [],
      "source": [
        "s.grid.plot()\nplt.savefig('before.png')\nplt.show()"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "Integrate\n\n"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "collapsed": false
      },
      "outputs": [],
      "source": [
        "s.integrate(dt = 20., max_steps=300)"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "Plot the result\n\n"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "collapsed": false
      },
      "outputs": [],
      "source": [
        "s.grid.plot()\nplt.savefig('after.png')\nplt.show()"
      ]
    }
  ],
  "metadata": {
    "kernelspec": {
      "display_name": "Python 3",
      "language": "python",
      "name": "python3"
    },
    "language_info": {
      "codemirror_mode": {
        "name": "ipython",
        "version": 3
      },
      "file_extension": ".py",
      "mimetype": "text/x-python",
      "name": "python",
      "nbconvert_exporter": "python",
      "pygments_lexer": "ipython3",
      "version": "3.11.6"
    }
  },
  "nbformat": 4,
  "nbformat_minor": 0
}