I want a simple tool to reproject a crappy whole-sphere image like this to something nice like Mollweide or Winkel Tripel. It seems like this would be easy enough with gdal, just have to learn enough about CRS to do it. The source looks like Plate Carree, no doubt produced by someone naive with a raster array of lat/lon samples.
Here’s a great StackExchange answer on reprojecting a bunch of tiles that’s more complicated than I need.
Edit: Mike M. to my rescue. He saw my blog post and offers