Make A Graph

Dataset Title:	Global Odyssea SST Analysis
Institution:	Ifremer (Dataset ID: IFR-L4-SSTfnd-ODYSSEA-GLOB_010)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Data Access Form

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Graph Type:
X Axis:
Y Axis:
Color:

Dimensions

Start

Stop

time (UTC)

specify just 1 value →

latitude (degrees_north)

longitude (degrees_east)

Graph Settings
Color Bar:	Continuity:	Scale:
Minimum:	Maximum:	N Sections:
Draw land mask:
Y Axis Minimum:	Maximum:

(Please be patient. It may take a while to get the data.)

Optional:
Then set the File Type: (File Type information)
and

or view the URL:
(Documentation / Bypass this form

)

Click on the map to specify a new center point.

Zoom:

[The graph you specified. Please be patient.]

Things You Can Do With Your Graphs

Well, you can do anything you want with your graphs, of course. But some things you might not have considered are:

Web page authors can embed a graph of the latest data in a web page using HTML <img> tags.
Anyone can use ERDDAPs Slide Sorter to build a personal web page that displays graphs with the latest data (or other images or HTML content), each in its own, draggable slide.

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.2831264e+9, 1.6250112e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "reference time of field";
    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 -79.95, 79.95;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -179.95, 179.95;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  analysed_sst {
    Float64 _FillValue -327.68;
    Float64 colorBarMaximum 40.0;
    Float64 colorBarMinimum -10.0;
    String long_name "analysed sea surface temperature";
    String standard_name "sea_surface_temperature foundation";
    String units "degree_C";
    Float64 valid_max 45.0;
    Float64 valid_min -3.0;
  }
  analysis_error {
    Float64 _FillValue -327.68;
    Float64 colorBarMaximum 5.0;
    Float64 colorBarMinimum 0.0;
    String long_name "estimated error standard deviation of analysed_sst";
    String standard_name "sea_surface_temperature_error";
    String units "degree_C";
    Float64 valid_max 327.67;
    Float64 valid_min 0.0;
  }
  mask {
    Byte _FillValue 0;
    String _Unsigned "false";
    Float64 colorBarMaximum 4.0;
    Float64 colorBarMinimum 0.0;
    String flag_masks "0b, 1b, 2b, 3b";
    String flag_meanings "sea land lake ice";
    String long_name "land sea ice lake bit mask";
    String source_data "From GMT grdlandmask";
    String standard_name "land_binary_mask";
    Byte valid_max 12;
    Byte valid_min 0;
  }
  sea_ice_fraction {
    Float64 _FillValue -1.28;
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum 0.0;
    String long_name "sea ice area fraction";
    String source_data "EUMETSAT OSI-SAF";
    String standard_name "sea_ice_area_fraction";
    String units "1";
    Float64 valid_max 1.0;
    Float64 valid_min 0.0;
  }
  NC_GLOBAL {
    String acknowledgement "Please aknowledge the use of these data with the following statement: the data were obtained from the Centre de Recherche et d Exploitation Satellitaire (CERSAT), at IFREMER, Plouzane (France) on behalf of MyOcean project";
    String cdm_data_type "Grid";
    String comment "WARNING:Some applications are unable to properly handle signed byte values. If values are encountered > 127, please substract 256 from this reported value.";
    String contact "jean.francois.piolle@ifremer.fr;emmanuelle.autret@ifremer.fr";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creator_email "jfpiolle@ifremer.fr";
    String creator_name "Jean-Francois Piolle";
    String creator_url "http://cersat.ifremer.fr";
    String date_created "2019-09-10T02:12:36Z";
    Float64 Easternmost_Easting 179.95;
    String gds_version_id "2.0";
    Float64 geospatial_lat_max 79.95;
    Float64 geospatial_lat_min -79.95;
    Float64 geospatial_lat_resolution 0.1;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 179.95;
    Float64 geospatial_lon_min -179.95;
    Float64 geospatial_lon_resolution 0.09999999999999999;
    String geospatial_lon_units "degrees_east";
    String history 
"analysis originally produced by Ifremer/Cersat with Odyssea processor 2.0
2024-04-18T06:56:02Z (local files)
2024-04-18T06:56:02Z https://erddap.ifremer.fr/griddap/IFR-L4-SSTfnd-ODYSSEA-GLOB_010.das";
    String id "IFR-L4-SSTfnd-ODYSSEA-GLOB_010";
    String infoUrl "http://cersat.ifremer.fr";
    String institution "Ifremer";
    String keywords "analysed, analysed_sst, analysis, analysis_error, area, binary, bit, cryosphere, data, deviation, earth, Earth Science > Cryosphere > Sea Ice > Ice Extent, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, Earth Science > Oceans > Sea Ice > Ice Extent, error, estimated, exploitation, extent, foundation, fraction, francais, global, ice, ifremer, institut, lake, land, land_binary_mask, mask, mer, ocean, oceans, odyssea, pour, recherche, science, sea, sea_ice_area_fraction, sea_ice_fraction, sea_surface_temperature foundation, sea_surface_temperature_error, sst, standard, surface, temperature, time";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "MyOcean data use is free and open. Users must register at MyOcean help desk: servicedesk@myocean.eu.org";
    String metadata_conventions "Unidata Observation Dataset v1.0";
    String naming_authority "org.ghrsst";
    Float64 Northernmost_Northing 79.95;
    String platform "METOP-A;METOP-B;NOAA18;NOAA19;AQUA;ENVISAT;NOAA19;TRMM;AQUA;GOES11;GOES12;NOAA18;NOAA19;NOAA17;MSG-5;NOAA18;NOAA19;GCOM-W";
    String processing_level "L4";
    String product_version "1.0";
    String project "Cersat";
    String publisher_email "fpaf@ifremer.fr";
    String publisher_name "Ifremer/Cersat";
    String publisher_url "http://cersat.ifremer.fr";
    String references "Piolle J. F., Autret E., Arino O., Robinson I.S, Le Borgne P., (2010), Medspiration, toward the sustained delivery of satellite SST products and services over regional seas, Proceedings of the 2010 ESA Living Planet Symposium Bergen.";
    String sensor "AVHRR;AVHRR;AVHRR;AVHRR;MODIS_A;AATSR;AVHRR;TMI;AMSRE;Imager;Imager;AVHRR;AVHRR;AVHRR;SEVIRI;AVHRR;AVHRR;AMSR2";
    String source_data "AVHRR_SST_METOP_A-OSISAF-L2P-v1.0;AVHRR_SST_METOP_B-OSISAF-L2P-v1.0;NAVO-L2P-AVHRR18_L;NAVO-L2P-AVHRR19_L;JPL-L2P-MODIS_A;UPA-L2P-ATS_NR_2P;AVHRR19_D-ABOM-L2P;REMSS-L2P-TMI;USA-RSS-AMSRE-MW-L2-SST;OSDPD-L2P-GOES11;OSDPD-L2P-GOES12;NAVO-L2P-AVHRR18_G;NAVO-L2P-AVHRR19_G;EUR-L2P-NAR17_SST;EUR-L2P-SEVIRI_SST;EUR-L3P-NAR_AVHRR_NOAA_18;AVHRR_SST_NOAA19_NAR-OSISAF-L3C-v1.0;AMSR2-REMSS-L2P-v07.2";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -79.95;
    String spatial_resolution "0.1 degree";
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary "Global Odyssea Sea Surface Temperature Analysis. Multisensor optimal interpolation of sea surface temperature foundation over a global 0.1 degree resolution grid, daily";
    String temporal_resolution "daily";
    String testOutOfDate "now-7days";
    String time_coverage_end "2021-06-30T00:00:00Z";
    String time_coverage_start "2010-08-30T00:00:00Z";
    String title "Global Odyssea SST Analysis";
    Float64 Westernmost_Easting -179.95;
  }
}

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://coastwatch.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://coastwatch.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.