The merged Hadley-OI sea surface temperature (SST) and sea ice concentration (SIC) data sets were specifically developed as surface forcing data sets for AMIP style uncoupled simulations of the Community Atmosphere Model (CAM). The Hadley Centre's SST/SIC version 1.1 (HADISST1), which is derived gridded, bias-adjusted in situ observations, were merged with the NOAA-Optimal Interpolation (version 2; OI.v2) analyses. The HADISST1 spanned 1870 onward but the OI.v2, which started in November 1981, better resolved features such as the Gulf Stream and Kuroshio Current which are important components of the climate system. Since the two data sets used different development methods, anomalies from a base period were used to create a more homogeneous record. Also, additional adjustments were made to the SIC data set.
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|Average Arctic sea ice concentration for March 2003-2007 from the Merged Had-OI boundary condition data set. (Figure by D. Schneider, NCAR).|
|Sample SST anomalies. The top two figures show two strong El Nino events for January (1983 and 1998) and two strong La Nina events (1974 and 2011). A 1950-79 climatology is used as a reference. (Climate Data Guide; D. Shea)|
National Center for Atmospheric Research Staff (Eds). Last modified 03 Jun 2016. "The Climate Data Guide: Merged Hadley-NOAA/OI Sea Surface Temperature & Sea-Ice Concentration (Hurrell et al, 2008)." Retrieved from https://climatedataguide.ucar.edu/climate-data/merged-hadley-noaaoi-sea-surface-temperature-sea-ice-concentration-hurrell-et-al-2008.