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NOAA Extended Reconstructed SST

The Extended Reconstructed Sea Surface Temperature (ERSST) dataset is a global monthly sea surface temperature analysis derived from the International Comprehensive Ocean–Atmosphere Dataset with missing data filled in by statistical methods. This monthly analysis begins in January 1854 continuing to the present and includes anomalies computed with respect to a 1971-2000 monthly climatology.

Extended Reconstructed Sea Surface Temperature (ERSST) v5
The newest version of ERSST is version v5. Major improvements in v5 include: 1) Inclusion and use of new sources and new versions of input datasets, such as data from Argo floats (new source), ICOADS R3.0 (from R2.5), HadISST2 (from HadISST1) sea ice concentration, and 2) Improved methodologies, such as inclusion of additional statistical modes, less spatial-temporal smoothing, better quality control method, and bias correction with baseline to modern buoy observations. The new version improves the spatial structures and magnitudes of El Nino and La Nina events.

Extended Reconstructed Sea Surface Temperature (ERSST) v4
The ERSST version v4 is produced on a 2° x 2° grid with spatial completeness enhanced using statistical methods. Version 4, is based on optimally tuned parameters using the latest datasets and improved analysis methods.

Extended Reconstructed Sea Surface Temperature (ERSST) v3b
The ERSST version 3b is optimally tuned to exclude under-sampled regions for global averages. In contrast to version 3, ERSST v3b does not include satellite data, which were found to cause a cold bias significant enough to change the rankings of months.

Reference:

• ERSST.v1
  Smith, T.M., and R.W. Reynolds, 2003: Extended Reconstruction of Global Sea Surface Temperatures Based on COADS Data (1854-1997). Journal of Climate, 16, 1495-1510.
  
  
• ERSST.v2
  Smith, T.M., and R.W. Reynolds, 2004: Improved Extended Reconstruction of SST (1854-1997). Journal of Climate, 17, 2466-2477.
  
  
• ERSST.v3
  Smith, T.M., R.W. Reynolds, Thomas C. Peterson, and Jay Lawrimore, 2008: Improvements to NOAA's Historical Merged Land-Ocean Surface Temperature Analysis (1880-2006). Journal of Climate, 21, 2283-2296.
  
  Xue, Y., T. M. Smith, and R. W. Reynolds, 2003: Interdecadal changes of 30-yr SST normals during 1871-2000. Journal of Climate, 16, 1601-1612.
  
  
• ERSST v4
  Huang, B., V.F. Banzon, E. Freeman, J. Lawrimore, W. Liu, T.C. Peterson, T.M. Smith, P.W. Thorne, S.D. Woodruff, and H.-M. Zhang, 2014: Extended Reconstructed Sea Surface Temperature version 4 (ERSST.v4): Part I. Upgrades and intercomparisons. Journal of Climate, 28, 911-930, [doi:10.1175/JCLI-D-14-00006.1].
  
  Liu, W., B. Huang, P.W. Thorne, et. al, 2014: Extended Reconstructed Sea Surface Temperature version 4 (ERSST.v4): Part II. Parametric and structural uncertainty estimations. Journal of Climate, 28, 931-951, [doi:10.1175/JCLI-D-14-00007.1].
  
  Huang, B., P. Thorne, T. Smith, et. al, 2015: Further Exploring and Quantifying Uncertainties for Extended Reconstructed Sea Surface Temperature (ERSST) Version 4 (v4). Journal of Climate, 29, 3119-3142, [doi:10.1175/JCLI-D-15-0430.1].
  
  
• ERSST v5
  Huang, B., Peter W. Thorne, et. al, 2017: Extended Reconstructed Sea Surface Temperature version 5 (ERSSTv5), Upgrades, validations, and intercomparisons. Journal of Climate, [doi: 10.1175/JCLI-D-16-0836.1]
  
  

Variables	SST (°C), SST anomaly (°C), SST error (°C)
Zonal	Global by 2.0 deg
Meridional	88.0S to 88.0N by 2.0 deg
Vertical	sea surface
Temporal	Jan 1854 to (present - 1 month) by 1 month(s)
Static?	no
Volume	33KB per variable per month
Server	public:
Source	http://www.ncdc.noaa.gov/data-access/marineocean-data/extended-reconstructed-sea-surface-temperature-ersst
Acquired	Nov 13, 2006 (Updated monthly on 5th)
APDRC contact
Supplements	Readme_ersst