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

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Dimensions	Size	Spacing
time (UTC)	2102	30 days 10h 29m 52s (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)

(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 -3.7868256e+9, 1.738368e+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 "2025-3-13";
    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 "2025-03-13";
    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
2025-03-29T07:18:46Z https://psl.noaa.gov/thredds/dodsC/Datasets/noaaglobaltemp/air.mon.anom.nc
2025-03-29T07:18:46Z 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 "2025-02-01T00:00:00Z";
    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;
  }
}

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.

(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.