Possible inefficiencies due to matplotlib - cartopy and create_animation() function. See OM4_SE_animation.ipynb [Link to notebook](https://app.reviewnb.com/m2lines/data-gallery/pull/20/) and [here](https://github.com/m2lines/data-gallery/pull/20/files#diff-aba2c5686f58f72a1108d94495f00afeb655f1d89af8ec36354569173a1adf3b).