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ERDDAP > griddap > Make A Graph ?

Dataset Title:  HYCOM, Global (Ocean Model Output, HYCOM Global Ocean Model) [time][lev][lat][
lon], 2008-present
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Institution:  University of Hawaii   (Dataset ID: hawaii_soest_d0fc_05b2_62c8)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Data Access Form
 
Graph Type:  ?
X Axis:  ?
Y Axis:  ?
Color:  ?
 
Dimensions ?    Start ?    Stop ?
time (UTC) ?     specify just 1 value →
    << -
< <
lev (meters) ?     specify just 1 value →
    << -
< <
latitude (degrees_north) ?
    +
    -
< slider >
longitude (degrees_east) ?
    +
    -
< slider >
 
Graph Settings
Color Bar:   Continuity:   Scale: 
   Minimum:   Maximum:   N Sections: 
Draw land mask: 
Y Axis Minimum:   Maximum:   Ascending: 
 
(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:

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.2102048e+9, 1.5462144e+9;
    String axis "T";
    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";
  }
  lev {
    Float64 actual_range 0.0, 200.0;
    String axis "Z";
    String ioos_category "Location";
    String long_name "altitude";
    String name "Depth";
    String positive "down";
    String standard_name "depth";
    String units "meters";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range -78.64, 46.8781;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range 74.16003, 434.08003;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  temperature {
    Float32 _FillValue 1.267651e+30;
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Temperature";
    String long_name "potential temperature (degc)";
    Float32 missing_value 1.267651e+30;
    String standard_name "sea_water_potential_temperature";
    String units "degree_C";
  }
  salinity {
    Float32 _FillValue 1.267651e+30;
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String ioos_category "Salinity";
    String long_name "salinity (psu)";
    Float32 missing_value 1.267651e+30;
    String standard_name "sea_water_practical_salinity";
    String units "PSU";
  }
  u {
    Float32 _FillValue 1.267651e+30;
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    String ioos_category "Currents";
    String long_name "eastward velocity (m/s)";
    Float32 missing_value 1.267651e+30;
    String standard_name "eastward_sea_water_velocity";
    String units "meter second-1";
  }
  v {
    Float32 _FillValue 1.267651e+30;
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    String ioos_category "Currents";
    String long_name "northward velocity (m/s)";
    Float32 missing_value 1.267651e+30;
    String standard_name "northward_sea_water_velocity";
    String units "meter second-1";
  }
  NC_GLOBAL {
    String acknowledgement "The Pacific Islands Ocean Observing System (PacIOOS) is funded through the National Oceanic and Atmospheric Administration (NOAA) as a Regional Association within the U.S. Integrated Ocean Observing System (IOOS). PacIOOS is coordinated by the University of Hawaii School of Ocean and Earth Science and Technology (SOEST).";
    String cdm_data_type "Grid";
    String comment "These model data are provided by the HYCOM Consortium as served via the Asia-Pacific Data-Research Center (APDRC) (http://apdrc.soest.hawaii.edu) GrADS Data Server (GDS). 3D variables start at 2008-05-08 while 2D variables start at 2013-08-21.";
    String contributor_name "Dr. Jim Potemra";
    String contributor_role "Data Manager";
    String Conventions "CF-1.6, ACDD-1.3, COARDS";
    String creator_email "forum@hycom.org";
    String creator_institution "HYCOM Consortium";
    String creator_name "HYCOM Consortium";
    String creator_type "group";
    String creator_url "https://hycom.org";
    String dataType "Grid";
    String date_created "2013-04-23";
    String date_issued "2013-04-23";
    String date_metadata_modified "2017-01-30";
    String date_modified "2014-06-23";
    String documentation "http://apdrc.soest.hawaii.edu/datadoc/hycom_global.php";
    Float64 Easternmost_Easting 434.08003;
    String geospatial_bounds "POLYGON ((-78.64 -180.0, 46.8781 -180.0, 46.8781 180.0, -78.64 180.0, -78.64 -180.0))";
    String geospatial_bounds_crs "EPSG:4326";
    Float64 geospatial_lat_max 46.8781;
    Float64 geospatial_lat_min -78.64;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 434.08003;
    Float64 geospatial_lon_min 74.16003;
    Float64 geospatial_lon_resolution 0.08;
    String geospatial_lon_units "degrees_east";
    String history 
"HYCOM aggregated via NcML from University of Hawaii Asia-Pacific Data-Research Center (APDRC) GrADS Data Server (GDS) OPeNDAP for redistribution by PacIOOS data servers, J. Maurer (04/2013), HYCOM changed: now provides mlt rather than mld and mlp (02/2014)
2018-04-25T16:13:01Z http://oos.soest.hawaii.edu/thredds/dodsC/pacioos/hycom/global
2018-04-25T16:13:01Z http://upwell.pfeg.noaa.gov/griddap/hawaii_soest_d0fc_05b2_62c8.das";
    String id "hycom_globalhttp://oos.soest.hawaii.edu/thredds/dodsC/pacioos/hycom/global";
    String infoUrl "https://hycom.org";
    String institution "University of Hawaii";
    String instrument "Not Applicable > Not Applicable";
    String instrument_vocabulary "GCMD Instrument Keywords";
    String ISO_Topic_Categories "oceans";
    String keywords "/regional, assimilation, atmosphere, atmospheric, circulation, coordinate, coupled, currents, data, degc, density, earth, Earth Science > Atmosphere > Atmospheric Radiation > Heat Flux, Earth Science > Oceans > Ocean Circulation > Fresh Water Flux, Earth Science > Oceans > Ocean Circulation > Ocean Currents, Earth Science > Oceans > Ocean Circulation > Ocean Mixed Layer, Earth Science > Oceans > Ocean Temperature > Ocean Mixed Layer, Earth Science > Oceans > Ocean Temperature > Potential Temperature, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, Earth Science > Oceans > Salinity/Density > Salinity, Earth Science > Oceans > Sea Surface Topography > Sea Surface Height, Earth Science Services > Models > Ocean General Circulation Models (OGCM)/Regional Ocean Models, Earth Science Services > Models > Weather Research/Forecast Models, eastward, eastward_sea_water_velocity, flux, forecast, fresh, general, global, hawaii, heat, height, hybrid, hycom, latitude, layer, lev, longitude, mixed, model, models, navy, ncoda, northward, northward_sea_water_velocity, ocean, oceanic, oceans, ogcm, output, potential, practical, psu, radiation, research, research/forecast, salinity, salinity/density, science, sea, sea_water_potential_temperature, sea_water_practical_salinity, seawater, services, surface, temperature, time, topography, u, unit, university, v, velocity, water, weather";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "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, University of Hawaii, PacIOOS, NOAA, State of Hawaii 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 locations "Geographic Region > Global Ocean";
    String locations_vocabulary "GCMD Location Keywords";
    String Metadata_Link "http://www.pacioos.hawaii.edu/metadata/hycom_global.html";
    String naming_authority "org.pacioos";
    Float64 Northernmost_Northing 46.8781;
    String platform "Models/Analyses > > Operational Models";
    String platform_vocabulary "GCMD Platform Keywords";
    String program "Pacific Islands Ocean Observing System (PacIOOS)";
    String project "Pacific Islands Ocean Observing System (PacIOOS)";
    String publisher_email "info@pacioos.org";
    String publisher_institution "University of Hawaii";
    String publisher_name "Pacific Islands Ocean Observing System (PacIOOS)";
    String publisher_type "group";
    String publisher_url "http://www.pacioos.hawaii.edu";
    String references "http://apdrc.soest.hawaii.edu/datadoc/hycom_global.php, https://hycom.org, http://www.pacioos.hawaii.edu";
    String source "HYbrid Coordinate Ocean Model (HYCOM) and Navy Coupled Ocean Data Assimilation (NCODA), https://hycom.org";
    String sourceUrl "http://oos.soest.hawaii.edu/thredds/dodsC/pacioos/hycom/global";
    Float64 Southernmost_Northing -78.64;
    String standard_name_vocabulary "CF Standard Name Table v39";
    String summary "HYbrid Coordinate Ocean Model (HYCOM): Global. Global HYbrid Coordinate Ocean Model (HYCOM) and U.S. Navy Coupled Ocean Data Assimilation (NCODA) 3-day, daily forecast at approximately 9-km (1/12-degree) resolution. This is a demonstration product from the HYCOM Consortium and is provided as is. While considerable effort has been made to implement all model components in a thorough, correct, and accurate manner, numerous sources of error are possible. As such, please use these data with the caution appropriate for any ocean related activity.";
    String time_coverage_end "2018-12-31T00:00:00Z";
    String time_coverage_resolution "P1D";
    String time_coverage_start "2008-05-08T00:00:00Z";
    String title "HYCOM, Global (Ocean Model Output, HYCOM Global Ocean Model) [time][lev][lat][lon], 2008-present";
    Float64 Westernmost_Easting 74.16003;
  }
}

 

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
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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