Dataset {
  Grid {
    ARRAY:
      Float32 taod[time = 999999][lev = 12][lat = 361][lon = 576];
    MAPS:
      Float64 time[time = 999999];
      Float64 lev[lev = 12];
      Float64 lat[lat = 361];
      Float64 lon[lon = 576];
  } taod;
  Grid {
    ARRAY:
      Float32 aaod[time = 999999][lev = 12][lat = 361][lon = 576];
    MAPS:
      Float64 time[time = 999999];
      Float64 lev[lev = 12];
      Float64 lat[lat = 361];
      Float64 lon[lon = 576];
  } aaod;
  Float64 time[time = 999999];
  Float64 lev[lev = 12];
  Float64 lat[lat = 361];
  Float64 lon[lon = 576];
} /GEOS-5/MERRAero/hourly/inst3hr_2d_xaod_Nc;