I'm currently working on creating a weather map system with leaflet. I'm using grads to create KML files from NOAA/NCEP GFS data in grib2 format. Grads seems to be only able to write out one layer pro KML, so I end up with 60 KML files - one for each time index.
Is there any Linux command line tool which could combine those 60 KML files into one and also write the correct metadata so I could play a time domain animation of the file in Leaflet or Google Earth?