1. RmarineHeatWaves::sst_Med
    Optimally Interpolated 0.25 degree SST for the Mediterranean region.
  2. RmarineHeatWaves::sst_NW_Atl
    Optimally Interpolated 0.25 degree SST for the NW Atlantic region.
  3. RmarineHeatWaves::sst_WA
    Optimally Interpolated 0.25 degree SST for the Western Australian region.