Make A Graph

Dataset Title:	Arctic Seas Regional Climatology : sea_water_temperature January 0.25 degree
Institution:	NODC (Dataset ID: NODC_ARCTIC_REGIONAL_ClIMATOLOGY)
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 →

depth (m)

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:
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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 1296000.0, 2.9808e+7;
    String axis "T";
    String calendar "gregorian";
    String climatology "climatology_bounds";
    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";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float32 actual_range 0.0, 1500.0;
    String axis "Z";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 60.125, 89.875;
    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 -179.875, 179.875;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  sea_water_salinity {
    Float32 _FillValue 9.96921e+36;
    String cell_methods "area: mean depth: mean time: mean";
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String grid_mapping "crs";
    String ioos_category "Sea Level";
    String long_name "Objectively analyzed mean fields for salinity at standard depth levels.";
    String standard_name "sea_water_salinity";
    String units "1e-3";
  }
  mean_sea_water_temperature {
    Float32 _FillValue 9.96921e+36;
    String cell_methods "area: mean depth: mean time: mean";
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String grid_mapping "crs";
    String ioos_category "Sea Level";
    String long_name "Objectively analyzed mean fields for sea_water_temperature at standard depth levels.";
    String standard_name "sea_water_temperature";
    String units "degree_Celsius";
  }
  NC_GLOBAL {
    String _CoordSysBuilder "ucar.nc2.internal.dataset.conv.CF1Convention";
    String cdm_data_type "Grid";
    String comment "regional climatology as part of the World Ocean Atlas project";
    String contributor_name "Ocean Climate Laboratory";
    String contributor_role "Calculation of climatologies";
    String Conventions "CF-1.6, COARDS, Unidata Dataset Discovery v1.0";
    String creator_email "NODC.Services@noaa.gov";
    String creator_name "Ocean Climate Laboratory";
    String creator_url "https://www.nodc.noaa.gov";
    String date_created "2013-11-18";
    String date_modified "2013-11-18";
    Float64 Easternmost_Easting 179.875;
    Float64 geospatial_lat_max 89.875;
    Float64 geospatial_lat_min 60.125;
    Float64 geospatial_lat_resolution 0.25;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 179.875;
    Float64 geospatial_lon_min -179.875;
    Float64 geospatial_lon_resolution 0.25;
    String geospatial_lon_units "degrees_east";
    String history 
"Tue Jul 15 13:47:54 2014: ncatted -O -a units,mean_sea_water_temperature,o,c,degrees_Celcius test.nc
Tue Jul 15 13:10:30 2014: ncatted -O -a axis,time,c,c,T merged2.nc
Tue Jul 15 13:08:51 2014: ncatted -O -a long_name,time,c,c,time merged2.nc
Tue Jul 15 13:08:35 2014: ncatted -O -a climatology,time,c,c,climatology_bounds merged2.nc
Tue Jul 15 13:07:52 2014: ncatted -O -a standard_name,time,c,c,time merged2.nc
Tue Jul 15 13:06:49 2014: ncatted -O -a units,time,o,c,days since 1970-01-01 00:00:00 merged2.nc
Tue Jul 15 13:05:11 2014: ncap2 -s time*=30 merged.nc merged2.nc
Tue Jul 15 13:01:17 2014: ncatted -O -a units,time,o,c,days since 1970-01-01 00:00:00 merged.nc
Tue Jul 15 12:29:12 2014: ncks --mk_rec_dmn time t01_04.nc t01_04.nc
Tue Jul 15 11:08:48 2014: ncks -x -v t_mn,t_dd,t_sd,t_se,t_oa,t_ma,t_gp t01_04.nc processed/t01_04.nc
2023-03-31T09:37:29Z (local files)
2023-03-31T09:37:29Z http://erddap.axiomdatascience.com/griddap/NODC_ARCTIC_REGIONAL_ClIMATOLOGY.das";
    String id "SPECIAL";
    String infoUrl "https://www.nodc.noaa.gov";
    String institution "NODC";
    String keywords "<iso_topic_category> oceans</iso_topic_category>, analyzed, arctic, climatology, degree, density, depth, Earth Science > Oceans > Ocean Temperature > Water Temperature, Earth Science > Oceans > Salinity/Density > Salinity, fields, level, levels, mean, noaa, nodc, objectively, ocean, oceans, regional, salinity, sea, sea level, sea_water_salinity, sea_water_temperature, seas, seawater, standard, temperature, water";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "These data are openly available to the public. Please acknowledge the use of these data with the text given in the acknowledgment attribute.";
    String Metadata_Conventions "CF-1.6, COARDS, Unidata Dataset Discovery v1.0";
    String metadata_link "https://www.nodc.noaa.gov/OC5/regional_climate/arctic/about_arctic.html";
    String naming_authority "gov.noaa.nodc";
    String NCO "4.0.9";
    Int32 nco_openmp_thread_number 1;
    String nodc_template_version "NODC_NetCDF_Grid_Template_v1.0";
    Float64 Northernmost_Northing 89.875;
    String original_institution "National Oceanographic Data Center(NODC)";
    String processing_level "processed";
    String project "World Ocean Atlas";
    String publisher_email "NODC.Services@noaa.gov";
    String publisher_name "National Oceanographic Data Center";
    String publisher_url "https://www.nodc.noaa.gov/";
    String references "Locarnini, R. A., A. V. Mishonov, J. I. Antonov, T. P. Boyer, H. E. Garcia, O. K. Baranova, M. M. Zweng, and D. R. Johnson, 2010: World Ocean Atlas 2009, Volume 1: Temperature. S. Levitus, Ed. NOAA Atlas NESDIS 68, U.S. Government Printing Office, Washington, D.C., 184 pp. .https://www.nodc.noaa.gov/OC5/regional_climate/arctic/about_arctic.html";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 60.125;
    String standard_name_vocabulary "CF-1.6";
    String summary "Climatological mean temperature and salinity for the Arctic Seas and environs from in situ profile data";
    String time_coverage_duration "P01M";
    String time_coverage_end "1970-12-12T00:00:00Z";
    String time_coverage_resolution "P01M";
    String time_coverage_start "1970-01-16T00:00:00Z";
    String title "Arctic Seas Regional Climatology : sea_water_temperature January 0.25 degree";
    Float64 Westernmost_Easting -179.875;
  }
}

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.