We offer here Version 2 of the well known Reynolds SST data set. It comprises two new high resolution sea surface temperature (SST) analysis products that have been developed using optimum interpolation (OI) --> OISST data set. One product uses Advanced Very High Resolution Radiometer (AVHRR) infrared satellite SST data (Pathfinder data: September 1981 through December 2005; operational AVHRR: January 2006 onwards). The other uses AVHRR and Advanced Microwave Scanning Radiometer (AMSR) on the NASA Earth Observing System satellite SST data (June 2002 onwards). Both products also use in situ data from ships and buoys and include a large-scale adjustment of satellite biases with respect to the in situ data.
ICDC offers the data set that is based on AVHRR data because this is the longest time series available (since 1981).
In addition ICDC has computed the monthly mean SST for 1982-2016 and offers these data.
More information is given at
See also the publications below (see references).
Last data update at ICDC: August 25, 2017.
On top of this ICDC has computed anomalies of the monthly mean SST relative to two reference periods: 1982-2001 and 1992-2011 and also offers these anomalies for 1982-2016.
NEW are maps of the SST trend for each month for the period 1982-2016. One example of these maps are displayed in the top right; the others can be clicked below:
New as well are graphs of the SST trend computed from 13-month moving average SST of 10° x 10° boxes. For each of these boxes shown in the sample trend figure at the top right the linear trend, its significance (p-value) and the mean SST are computed. Trend values without a p-value are not significant. Down below we show three sample graphs for 10°W to 20°W for, from left to right, 50°N-60°N, 40°N-50°N, 30°N-40°N. All the Graphs are available on request from stefan.kern(at)uni-hamburg.de or under /data/icdc/ocean/reynolds_sst/DATA/TRENDS/.
|Daily data||NCDC Product|
|Land mask||--||1: ocean, 2: land|
|Ice mask||--||0 ... 1|
|Monthly data||CliSAP/KlimaCampus Product|
|SST||K||includes flag minimum ice extent|
|Mean retrieval uncertainty||K|
|SST standard deviation||K|
|Flag minimum ice extent||--||0: ice, 1: ocean|
|Flag maximum ice extent||--||0: ice, 1: ocean|
|Number of days used per month||--|
|SST anomaly||K||Anomaly of the monthly SST with respect to|
|mean monthly SST of periods 1982-2001 & 1992-2011|
Period and temporal resolution:
Feb. 28, Mar. 19 and 22, May 10, June 10, Aug. 19, Nov. 2, and Dec. 12 2016
Feb. 4 & 25, Mar. 15, May 18-20, May 22 - June 5 2017
Coverage and spatial resolution:
In addition, the daily data set includes the NCEP/NCAR Reanalysis sea ice concentration.
During the computation of the monthly mean SST ICDC found a number of inconsistencies:
Plus: NOAA Optimum Interpolation (Reynolds) Sea Surface Temperatures (https://www.ncdc.noaa.gov/oisst) have been obtained in netCDF file format by the Integrated Climate Data Center (ICDC, icdc.cen.uni-hamburg.de), University of Hamburg, Hamburg, Germany.