View Alaskan/East Siberian Side of Arctic in Carto…

I have some points plotted on a NorthPolarStero map in Cartopy using the following code

fig, ax = plt.subplots(1,1,figsize=(8,8),  subplot_kw={'projection': ccrs.NorthPolarStereo()})

ax.scatter([x[0] for x in max_coords[:-1]],
           [x[1] for x in max_coords[:-1]],
           color='k',
           s=50,
           marker='x',transform=ccrs.PlateCarree(),zorder=5,
           label='BSH Center 1980-2020')

ax.set_extent([-180, 180, 90, 66], ccrs.PlateCarree())

ax.add_feature(cartopy.feature.LAND, edgecolor='black',zorder=1)

ax.legend(fontsize='x-large')

But I would actually like to plot just the top half of this image, like this:

If I change the “`ax.set_extent“ line to either:

[90, -90, 90, 66] or [-90, 90, 90, 66]

It just gives me the bottom half of the plot, like this:

Does anybody know how to get the top half? I have also tried setting the central_longitude keyword of the NorthPolarStereo line to +/- 180, but it just shows the wrong half upside down.

Answer

To set extents for plotting the required area, you should use the coordinates of the projection in use ccrs.NorthPolarStereo(). The relevant code you need is: –

ax.set_extent([-2.633e+06, 2.696e+06, -6e+04, 2.9e+06], crs=ccrs.NorthPolarStereo())

and you should get the plot similar to this:

View Alaskan/East Siberian Side of Arctic in Cartopy

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Answer