In support of the operational implementation of this new SST analysis, in late January 2001 the NCEP Marine Prediction Center (MPC) conducted an operational evaluation of both the operational ETA model (which was utilizing the lower-resolution Reynolds-Smith analysis) and the experimental ETA ("ETA-X") model (utilizing the new RTG_SST analysis). Both models were run simultaneously in real-time parallel mode on the IBM SP supercomputer at NCEP, which greatly facilitated the evaluation by the MPC forecasters.
The results of the MPC evaluation will be presented in full in this presentation. In particular, focus will be given to cases from both the eastern Pacific ocean and the western Atlantic ocean where significant differences between the ETA and ETA-X were noted. In general, both MPC forecasters and EMC modelers were surprised to find the extent of change and positive impact the ETA-X displayed, particularly in the eastern Pacific where little or no impact was expected to result from the new RTG_SST analysis.