References (incomplete) Hadley SST (prior to OSTIA) Rayner, N. A.; Parker, D. E.; Horton, E. B.; Folland, C. K.; Alexander, L. V.; Rowell, D. P.; Kent, E. C.; Kaplan, A. (2003) Global analyses of sea surface temperature, sea ice, and night marine air temperature since the late nineteenth century J. Geophys. Res.Vol. 108, No. D14, 4407 10.1029/2002JD002670 (pdf ~9Mb) OSTIA SST and sea ice Craig J. Donlon, Matthew Martin, John Stark, Jonah Roberts-Jones, Emma Fiedler, Werenfrid Wimmer, The Operational Sea Surface Temperature and Sea Ice Analysis (OSTIA) system, Remote Sensing of Environment, Volume 116, 2012, Pages 140-158, ISSN 0034-4257, https://doi.org/10.1016/j.rse.2010.10.017.