The NCEP/NCAR Reanalysis project is using a state-of-the-art
analysis/forecast system to perform data assimilation using past data
from 1948 to the present. A subset of this data has been processed ...
This data set is the Extended Reconstruction of Historical Sea Surface
Temperatures (SST) Using improved statistical methods (1854 to
present). The extended reconstructed sea surface temperature (ERSST) ...
The data sets in the CDC archive called "Reynolds SST' and
"Reconstructed Reynolds SST" were discontinued on 1 April 2003.
A new OI SST data set is available as described here, which includes a