NOAA Smith and Reynolds Extended Reconstructed Sea Surface Temperature (ERSST) Level 4 Monthly Version 5 Dataset in netCDF
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DOI10.5067/ERSST-L4N50
Short NameREYNOLDS_NCDC_L4_MONTHLY_V5
DescriptionThe Smith & Reynolds Extended Reconstructed Sea Surface Temperature (ERSST) Level 4 dataset provides a historical reconstruction of monthly global ocean surface temperatures and temperature anomalies over a 2 degree spatial grid since 1854 from in-situ observations based on a consistent statistical methodology that accounts for uneven sampling distributions over time and related observational biases. Version 5 of this dataset implements release 3.0 of ICOADS (International Comprehensive Ocean-Atmosphere Data Set) and is supplemented by monthly GTS (Global Telecommunications Ship and buoy) system data. As for the prior ERSST version, v5 implements Empirical Orthogonal Teleconnection analysis (EOT) but with an improved tuning method for sparsely sampled regions and periods. ERSST anomalies are computed with respect to a 1971-2000 monthly climatology. The version 5 has been improved from previous version 4. 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. The ERSST v5 in netCDF format contains extended reconstructed sea surface temperature, SST anomaly, and associated estimated SST error standard deviation fields, incompliance with CF1.6 standard metadata.
Version5
Dataset TypeACTIVE
MeasurementOCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE
Processing Level4
CoverageRegion: GLOBAL
North Bounding Coordinate: 90 degrees
South Bounding Coordinate: -90 degrees
West Bounding Coordinate: -180 degrees
East Bounding Coordinate: 180 degrees
Time Span: 1854-Jan-01 to Present
Granule Time Span: 1854-Jan-01 to 2021-Aug-31
ResolutionSpatial Resolution: 2 degrees (Latitude) x 2 degrees (Longitude)
Temporal Resolution: 1 Month
ProjectionProjection Type: Gridded
Platform/Sensor
NCEP GTS
Platform
Name: Global Telecommunication System Ship and Buoy In Situ Observations (NCEP GTS)
Orbit Period: 0.0 minutes
Inclination Angle: 0.0 degrees
/
InSitu
SENSOR
Name: Ships and Moored and Drifting Buoys (InSitu)
Swath Width: -999.0 kilometers
Description: Spacecraft angular distance from orbital plane relative to the Equator.

ICOADS
Platform
Name: International Comprehensive Ocean-Atmosphere Data Set (ICOADS)
Orbit Period: 0.0 minutes
Inclination Angle: 0.0 degrees
/
InSitu
SENSOR
Name: Ships and Moored and Drifting Buoys (InSitu)
Swath Width: -999.0 kilometers
Description: Spacecraft angular distance from orbital plane relative to the Equator.

ProjectReynolds SST (REYNOLDS_SST)
Data ProviderPublisher: NOAA's National Centers for Environmental Information (NCEI)
Creator: Smith, T., Reynolds, R.
Release Place: NOAA National Climatic Data Center, 151 Patton Avenue, Asheville, NC, USA
Release Date: 1981-Nov-07
Resource: https://www1.ncdc.noaa.gov/pub/data/cmb/ersst/

Keyword(s)Reynolds, sea surface temperature, L4, Level 4, ersst, surface temperature
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
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PUBLICATIONS
DATA CITATION POLICY
Citation Smith, T., Reynolds, R.. 1981. NCDC Smith & Reynolds Historical Reconstructed Sea Surface Temperature Data Sets. Ver. 5. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/ERSST-L4N50

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For more information see Data Citations and Acknowledgments.

Journal Reference 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.

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