Global plots part2

[Brian-Jamison]

This is part 2 of the global plots, which cover the interpolated subregions for Alaska, CONUS, and the Northern and Southern Hemisphere. The Southern Hemisphere cannot currently be plotted correctly with the map, because the metadata in the grib2 file is incorrect.

Also included here is the ability to turn off airport plotting for certain plots. In this case, the airports for the smoke-related plots are not plotted (by request).

Examples of the new imagery follows:

Alaska full domain:

Alaska Zoom:

Alaska Zoom 2:

CONUS full:

NW:

NC:

NE:

SW:

SC:

SE:

NHemi:

[Brian-Jamison]

I put in some comments about the code, and added sample images.