ERDDAP > griddap > Data Access Form

Dataset Title:	NOAA Merged Land Ocean Global Surface Temperature Analysis (NOAAGlobalTemp) (air.mon.anom), 5.0°, 1880-present
Institution:	NOAA   (Dataset ID: noaa_psl_d9a4_93e4_c44f)
Information:	Summary | License | FGDC | ISO 19115 | Metadata | Background | Make a graph

 

Dimensions	Start	Stride	Stop	Size	Spacing
time (UTC)				2091	30 days 10h 28m 22s (uneven)
latitude (degrees_north)				36	5.0 (even)
longitude (degrees_east)				72	5.0 (even)

Grid Variables (which always also download all of the dimension variables)

air (Surface Air Temperature and SST Monthly Anomaly, degree_C)

File type: (more information) .asc - View OPeNDAP-style ISO-8859-1 comma-separated text. .csv - Download a ISO-8859-1 comma-separated text table (line 1: names; line 2: units; ISO 8601 times). .csvp - Download a ISO-8859-1 .csv file with line 1: name (units). Times are ISO 8601 strings. .csv0 - Download a ISO-8859-1 .csv file without column names or units. Times are ISO 8601 strings. .das - View the dataset's metadata via an ISO-8859-1 OPeNDAP Dataset Attribute Structure (DAS). .dds - View the dataset's structure via an ISO-8859-1 OPeNDAP Dataset Descriptor Structure (DDS). .dods - OPeNDAP clients use this to download the data in the DODS binary format. .esriAscii - Download an ISO-8859-1 ESRI ASCII file (latitude longitude data only; longitude must be all below or all above 180). .fgdc - View the dataset's UTF-8 FGDC .xml metadata. .graph - View a Make A Graph web page. .help - View a web page with a description of griddap. .html - View an OPeNDAP-style HTML Data Access Form. .htmlTable - View a UTF-8 .html web page with the data in a table. Times are ISO 8601 strings. .iso19115 - View the dataset's ISO 19115-2/19139 UTF-8 .xml metadata. .itx - Download an ISO-8859-1 Igor Text File. Each axis variable and each data variable becomes a wave. .json - View a table-like UTF-8 JSON file (missing value = 'null'; times are ISO 8601 strings). .jsonlCSV1 - View a UTF-8 JSON Lines CSV file with column names on line 1 (mv = 'null'; times are ISO 8601 strings). .jsonlCSV - View a UTF-8 JSON Lines CSV file without column names (mv = 'null'; times are ISO 8601 strings). .jsonlKVP - View a UTF-8 JSON Lines file with Key:Value pairs (missing value = 'null'; times are ISO 8601 strings). .mat - Download a MATLAB binary file. .nc - Download a NetCDF-3 binary file with COARDS/CF/ACDD metadata. .ncHeader - View the UTF-8 header (the metadata) for the NetCDF-3 .nc file. .ncml - View the dataset's structure and metadata as a UTF-8 NCML .xml file. .nccsv - Download a NetCDF-3-like 7-bit ASCII NCCSV .csv file with COARDS/CF/ACDD metadata. .nccsvMetadata - View the dataset's metadata as the top half of a 7-bit ASCII NCCSV .csv file. .ncoJson - Download a UTF-8 NCO lvl=2 JSON file with COARDS/CF/ACDD metadata. .odvTxt - Download time,latitude,longitude,otherVariables as an ODV Generic Spreadsheet File (.txt). .timeGaps - View a UTF-8 list of gaps in the time values which are larger than the median gap. .tsv - Download a ISO-8859-1 tab-separated text table (line 1: names; line 2: units; ISO 8601 times). .tsvp - Download a ISO-8859-1 .tsv file with line 1: name (units). Times are ISO 8601 strings. .tsv0 - Download a ISO-8859-1 .tsv file without column names or units. Times are ISO 8601 strings. .wav - Download a .wav audio file. All columns must be numeric and of the same type. .xhtml - View a UTF-8 XHTML (XML) file with the data in a table. Times are ISO 8601 strings. .geotif - View a grayscale GeoTIFF .tif file (for latitude longitude data; longitude must be all below or all above 180). .kml - View a Google Earth .kml file (for latitude, longitude data only). .smallPdf - View a small .pdf image file with a graph or map. .pdf - View a standard, medium-sized .pdf image file with a graph or map. .largePdf - View a large .pdf image file with a graph or map. .smallPng - View a small .png image file with a graph or map. .png - View a standard, medium-sized .png image file with a graph or map. .largePng - View a large .png image file with a graph or map. .transparentPng - View a .png image file (just the data, without axes, landmask, or legend).

(Documentation / Bypass this form)
 
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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range -3.7868256e+9, 1.7092512e+9;
    String avg_period "0000-01-00 00:00:00";
    String axis "T";
    String calendar "gregorian";
    String coordinate_defines "start";
    String coverage_content_type "coordinate";
    String delta_t "0000-01-00 00:00:00";
    String ioos_category "Time";
    String long_name "Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range -87.5, 87.5;
    String axis "Y";
    String coordinate_defines "center";
    String grids "Uniform grid from -87.5 to 87.5 by 5";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range 2.5, 357.5;
    String axis "X";
    String coordinate_defines "center";
    String grids "Uniform grid from 2.5 to 357.5 by 5";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  air {
    Float32 actual_range -20.1062, 25.29;
    String cell_methods "time: anomaly (monthly from values)";
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum -10.0;
    String date_of_file_acquired "2024-4-16";
    String ioos_category "Temperature";
    String level_desc "Surface";
    String long_name "Surface Air Temperature and SST Monthly Anomaly";
    Float32 missing_value -9.96921e+36;
    String parent_stat "Observation";
    Int16 precision 2;
    String standard_name "air_temperature_anomaly";
    String statistic "Anomaly";
    String units "degree_C";
    Float32 valid_range -40.0, 40.0;
    String var_desc "Air Temperature";
  }
  NC_GLOBAL {
    String _NCProperties "version=1|netcdflibversion=4.4.1|hdf5libversion=1.8.16";
    String cdm_data_type "Grid";
    String climatology "Climatology is based on 1971-2000 monthly climatology";
    String comment "Merged land ocean surface temperature anomalies. Version 5.1.0, blending ERSST V5 and GHCN-M V4";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creator_email "Boyin.Huang@noaa.gov, Xungang.Yin@noaa.gov";
    String creator_name "Boyin Huang";
    String creator_type "person";
    String creator_url "https://www.noaa.gov/";
    String data_modified "2024-04-16";
    String dataset_citation_url "https://doi.org/10.25921/9qth-2p70";
    String dataset_title "NOAA Global Surface Temperature (NOAAGlobalTemp)";
    Float64 Easternmost_Easting 357.5;
    String geospatial_bounds "POLYGON ((2.5 -87.5, 2.5 87.5, 357.5 87.5, 357.5 -87.5, 2.5 -87.5))";
    Float64 geospatial_lat_max 87.5;
    Float64 geospatial_lat_min -87.5;
    Float64 geospatial_lat_resolution 5.0;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 357.5;
    Float64 geospatial_lon_min 2.5;
    Float64 geospatial_lon_resolution 5.0;
    String geospatial_lon_units "degrees_east";
    String history 
"Updated from V5.0 to V5.1 Feb 2023 using data from NCEI
2024-05-06T22:09:36Z https://psl.noaa.gov/thredds/dodsC/Datasets/noaaglobaltemp/air.mon.anom.nc
2024-05-06T22:09:36Z http://upwell.pfeg.noaa.gov/erddap/griddap/noaa_psl_d9a4_93e4_c44f.das";
    String id "Datasets/noaaglobaltemp/air.mon.anom.nc";
    String infoUrl "https://psl.noaa.gov/thredds/dodsC/Datasets/noaaglobaltemp/air.mon.anom.nc.html";
    String institution "NOAA";
    String instrument "Conventional thermometers";
    String keywords "air, air.mon.anom, air_temperature_anomaly, analysis, anomalies, anomaly, atmosphere, atmospheric, climatology, data, earth, Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Air Temperature, Earth Science > Atmosphere > Atmospheric Temperature > Temperature Anomalies, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, ghcn, global, historical, land, latitude, longitude, merged, month, monthly, network, noaa, noaaglobaltemp, ocean, oceans, science, sea, sst, surface, temperature, time";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "These data are available for use without restriction.";
    Float64 Northernmost_Northing 87.5;
    String platform "Ships, moored buoys, surface drifting buoys, Argo floats, and weather stations";
    String references "Vose, R. S., et al., 2012: NOAAs merged land-ocean surface temperature analysis. Bulletin of the American Meteorological Society, 93, 1677-1685. doi: 10.1175/BAMS-D-11-00241.1. Huang, B., Peter W. Thorne, et. al, 2017: Extended Reconstructed Sea Surface Temperature version 5 (ERSSTv5), Upgrades, validations, and intercomparisons. J. Climate, 30, 8179-8205. doi: 10.1175/JCLI-D-16-0836.1";
    String source "https://www.ncdc.noaa.gov/noaa-merged-land-ocean-global-surface-temperature-analysis-noaaglobaltemp-v5";
    String source_institution "DOC/NOAA/NESDIS/National Centers for Environmental Information(NCEI)";
    String sourceUrl "https://psl.noaa.gov/thredds/dodsC/Datasets/noaaglobaltemp/air.mon.anom.nc";
    Float64 Southernmost_Northing -87.5;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "NOAA Merged Land Ocean Global Surface Temperature Analysis (NOAAGlobalTemp). Merged land ocean surface temperature anomalies. Version 5.0.0, blending ERSST V5 and Global Historical Climatology Network (GHCN)-M V4";
    String testOutOfDate "now-130days";
    String time_coverage_end "2024-03-01T00:00:00Z";
    String time_coverage_start "1850-01-01T00:00:00Z";
    String title "NOAA Merged Land Ocean Global Surface Temperature Analysis (NOAAGlobalTemp) (air.mon.anom), 5.0°, 1880-present";
    String version "V5.1";
    Float64 Westernmost_Easting 2.5;
  }
}

 

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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 Data Access Protocol (DAP) and its projection constraints.

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.

• (easy) You can get data by using the dataset's Data Access Form. It makes the URL for you.
• (easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
• (not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.

griddap request URLs must be in the form
https://upwell.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://upwell.pfeg.noaa.gov/erddap/griddap/jplMURSST41.htmlTable?analysed_sst[(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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