A daily, global Sea Surface Temperature (SST) data set is produced at 1-km (also known as ultra-high resolution) by the JPL ROMS (Regional Ocean Modeling System) group. More descriptions of the SST input data and the blending algorithm can be find here.
Attention users (February 2, 2016): G1SST data files are corrupted since January 14, 2016. We decided to temporarily suspend the real time production of G1SST dataset. We are working diligently to correct this issue in order to provide users with high quality data.
We apologize for any inconvenience this interruption may cause and will keep you posted on the progress of resuming the data production.