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Dataset Title:  NOAA ERSSTv4 (in situ only), 2°, Global, Monthly, 1854-2020 Subscribe RSS
Institution:  NOAA/NESDIS/NCEI/CCOG   (Dataset ID: nceiErsstv4)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Files | Make a graph
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (Start Time, UTC) ?      1994    30 days 10h 29m 19s (uneven)
  < slider >
 depth (m) ?      1    (just one value)
  < slider >
 latitude (degrees_north) ?      89    2.0 (even)
  < slider >
 longitude (degrees_east) ?      180    2.0 (even)
  < slider >
Grid Variables (which always also download all of the dimension variables) 
 sst (Extended reconstructed sea surface temperature, degree_C) ?
 ssta (Extended reconstructed SST anomalies, degree_C) ?

File type: (more information)

(Documentation / Bypass this form) ?
(Please be patient. It may take a while to get the data.)


The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range -3.6605952e+9, 1.5805152e+9;
    String avg_period "0000-01-00";
    String axis "T";
    String delta_t "0000-01-00";
    String ioos_category "Time";
    String long_name "Start Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float64 actual_range 0.0, 0.0;
    String axis "Z";
    String comment "Measurement depth of in situ sea surface temperature varies";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String standard_name "depth";
    String units "m";
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range -88.0, 88.0;
    String axis "Y";
    String grids "Uniform grid from -88 to 88 by 2";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range 0.0, 358.0;
    String axis "X";
    String grids "Uniform grid from 0 to 358 by 2";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  sst {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 40.0;
    Float64 colorBarMinimum -10.0;
    String ioos_category "Temperature";
    String long_name "Extended reconstructed sea surface temperature";
    String standard_name "sea_surface_temperature";
    String units "degree_C";
    Float32 valid_max 45.0;
    Float32 valid_min -3.0;
  ssta {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 4.0;
    Float64 colorBarMinimum -4.0;
    String ioos_category "Temperature";
    String long_name "Extended reconstructed SST anomalies";
    String units "degree_C";
    Float32 valid_max 12.0;
    Float32 valid_min -12.0;
    String cdm_data_type "Grid";
    String climatology "Climatology is based on 1971-2000 SST, 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.";
    String comment "SSTs were observed by conventional thermometers in Buckets (in sulated or un-insulated canvas and wooded buckets), Engine Room Intakers, or floats and drifters";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creator_email "";
    String creator_name "Boyin Huang";
    String creator_type "person";
    String creator_url "";
    String date_modified "2020-03-03";
    String description "In situ data: ICOADS2.5 before 2007, NCEP in situ data from 2008 to present. Ice data: HadISST ice before 2015 and NCEP ice after 2015.";
    Float64 Easternmost_Easting 358.0;
    Float64 geospatial_lat_max 88.0;
    Float64 geospatial_lat_min -88.0;
    Float64 geospatial_lat_resolution 2.0;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 358.0;
    Float64 geospatial_lon_min 0.0;
    Float64 geospatial_lon_resolution 2.0;
    String geospatial_lon_units "degrees_east";
    String history 
"Fri Feb  3 13:52:46 2017: ncatted -O -a _FillValue,ssta,o,f,-999.0
New and revised data files are downloaded on the ~4th day of each month from to NOAA NMFS SWFSC ERD by Bob Simons ( in order to re-serve the up-to-date dataset on ERDDAP. The global metadata was lightly edited.
2024-06-15T05:13:47Z (local files)
    String id "ersst.v4.202002";
    String infoUrl "";
    String institution "NOAA/NESDIS/NCEI/CCOG";
    String instrument "Conventional thermometers";
    String keywords "&gt, anomalies, anomaly, ccog, centers, data, earth, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, environmental, ersstv4, extended, face, global, icoads, information, lev, national, ncei, nesdis, noaa, ocean, oceans, only, reconstructed, satellite, science, sea, service, situ, sst, ssta, sur, surface, temperature, time";
    String keywords_vocabulary "GCMD Science Keywords";
    String license 
"No constraints on data access or use.
The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.";
    String metadata_link "C00884";
    String naming_authority "gov.noaa.ncdc";
    String NCO "netCDF Operators version 4.7.5 (Homepage =, Code =";
    Float64 Northernmost_Northing 88.0;
    String platform "Ship and Buoy SSTs from ICOADS R2.5 and NCEP GTS";
    String processing_level "L4";
    String production_version "Version 5";
    String project "NOAA Extended Reconstructed Sea Surface Temperature (ERSST)";
    String publisher_email "";
    String publisher_name "Boyin Huang";
    String publisher_type "person";
    String references "Huang et al, 2015: Extended Reconstructed Sea Surface Temperatures Version 4 (ERSST.v4), Part I. Upgrades and Intercomparisons. Journal of Climate, DOI: 10.1175/JCLI-D-14-00006.1.";
    String source "ICOADS R2.5 SST, NCEP GTS SST, HadISST ice, NCEP ice";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -88.0;
    String spatial_resolution "2.0 degree grid";
    String standard_name_vocabulary "CF Standard Name Table v27";
    String summary 
"The Extended Reconstructed Sea Surface Temperature (ERSST) dataset is a global monthly sea surface temperature dataset derived from the International Comprehensive Ocean-Atmosphere Dataset (ICOADS). It is produced on a 2° × 2° grid with spatial completeness enhanced using 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. 

This dataset is ERSST version 4. Please see the newer version 5.";
    String time_coverage_end "2020-02-01T00:00:00Z";
    String time_coverage_start "1854-01-01T00:00:00Z";
    String title "NOAA ERSSTv4 (in situ only), 2°, Global, Monthly, 1854-2020";
    Float64 Westernmost_Easting 0.0;


Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request a data subset, graph, or map from a gridded dataset (for example, sea surface temperature data from a satellite), via a specially formed URL. griddap uses the OPeNDAP (external link) Data Access Protocol (DAP) (external link) and its projection constraints (external link).

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

griddap request URLs must be in the form{?query}
For example,[(2002-06-01T09:00:00Z)][(-89.99):1000:(89.99)][(-179.99):1000:(180.0)]
Thus, the query is often a data variable name (e.g., analysed_sst), followed by [(start):stride:(stop)] (or a shorter variation of that) for each of the variable's dimensions (for example, [time][latitude][longitude]).

For details, see the griddap Documentation.

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