.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "sample_data/earth_gravity.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        Click :ref:`here <sphx_glr_download_sample_data_earth_gravity.py>`
        to download the full example code

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_sample_data_earth_gravity.py:


Earth Gravity
=============

This is the magnitude of the gravity vector of the Earth (gravitational
+ centrifugal) at 10 km height. The data is on a regular grid with 0.5 degree
spacing at 10km ellipsoidal height. It was generated from the spherical
harmonic model EIGEN-6C4 [Forste_etal2014]_.

.. GENERATED FROM PYTHON SOURCE LINES 16-36



.. image:: /sample_data/images/sphx_glr_earth_gravity_001.png
    :alt: Gravity of the Earth (EIGEN-6C4)
    :class: sphx-glr-single-img


.. rst-class:: sphx-glr-script-out

 Out:

 .. code-block:: none

    <xarray.Dataset>
    Dimensions:          (latitude: 361, longitude: 721)
    Coordinates:
      * longitude        (longitude) float64 -180.0 -179.5 -179.0 ... 179.5 180.0
      * latitude         (latitude) float64 -90.0 -89.5 -89.0 ... 89.0 89.5 90.0
    Data variables:
        gravity          (latitude, longitude) float64 9.801e+05 ... 9.802e+05
        height_over_ell  (latitude, longitude) float64 1e+04 1e+04 ... 1e+04 1e+04
    Attributes: (12/35)
        generating_institute:  gfz-potsdam
        generating_date:       2018/11/07
        product_type:          gravity_field
        body:                  earth
        modelname:             EIGEN-6C4
        max_used_degree:       1277
        ...                    ...
        maxvalue:              9.8018358E+05 mgal
        minvalue:              9.7476403E+05 mgal
        signal_wrms:           1.5467865E+03 mgal
        grid_format:           long_lat_value
        attributes:            longitude latitude gravity_ell
        attributes_units:      deg. deg. mgal






|

.. code-block:: default

    import matplotlib.pyplot as plt
    import cartopy.crs as ccrs
    import harmonica as hm

    # Load the gravity grid
    data = hm.datasets.fetch_gravity_earth()
    print(data)

    # Make a plot of data using Cartopy
    plt.figure(figsize=(10, 10))
    ax = plt.axes(projection=ccrs.Orthographic(central_longitude=150))
    pc = data.gravity.plot.pcolormesh(
        ax=ax, transform=ccrs.PlateCarree(), add_colorbar=False
    )
    plt.colorbar(
        pc, label="mGal", orientation="horizontal", aspect=50, pad=0.01, shrink=0.6
    )
    ax.set_title("Gravity of the Earth (EIGEN-6C4)")
    ax.coastlines()
    plt.show()


.. rst-class:: sphx-glr-timing

   **Total running time of the script:** ( 0 minutes  0.705 seconds)


.. _sphx_glr_download_sample_data_earth_gravity.py:


.. only :: html

 .. container:: sphx-glr-footer
    :class: sphx-glr-footer-example



  .. container:: sphx-glr-download sphx-glr-download-python

     :download:`Download Python source code: earth_gravity.py <earth_gravity.py>`



  .. container:: sphx-glr-download sphx-glr-download-jupyter

     :download:`Download Jupyter notebook: earth_gravity.ipynb <earth_gravity.ipynb>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_