Updated May 11,18 and 19 with text added at the end. Further update on May 27 at the end. You only have to compare Sea Surface Temperatures (SST) from HADSST3 with estimates of Global Mean Surface Temperatures (GMST) from Hadcrut4 and RSS. This first graph shows how global SST has varied since 1850. There are … Continue reading Empirical Evidence: Oceans Make Climate