GLERL ERDDAP
Easier access to scientific data
   
Brought to you by NOAA GLERL CoastWatch Great Lakes Node    

ERDDAP > griddap > Make A Graph ?

Dataset Title:  Great Lakes GLSEA & NIC Ice. NOAA/GLERL/COASTWATCH data from a local source. Subscribe RSS
Institution:  NOAA/GLERL/COASTWATCH   (Dataset ID: test_30)
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 →
    << - >>
< <
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 1.2013056e+9, 1.2017376e+9;
    String axis "T";
    String base_date "1970,1,1,0";
    String ioos_category "Time";
    String long_name "Easten 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";
    Float64 actual_range 38.880714416503906, 50.60783767700195;
    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 -92.41887664794922, -75.8772964477539;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  temp {
    String cell_methods "area: mean";
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String grid_mapping "crs";
    String ioos_category "Temperature";
    String long_name "Temperature";
    Float32 missing_value -99999.0;
    String standard_name "sea_water_temperature";
    String units "degree_C";
  }
  Ice {
    String cell_methods "area: mean";
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String grid_mapping "crs";
    String ioos_category "Ice Distribution";
    String long_name "Ice Consentration";
    Float32 missing_value -99999.0;
    String standard_name "ice_consentration";
    String units "percent";
  }
  NC_GLOBAL {
    String author "songzhi.liu@noaa.gov";
    String cdm_data_type "Grid";
    String comment "Great Lakes GLSEA & NIC Ice";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creation_date "Fri Mar 15 17:12:04 2019 GMT";
    String creator_email "songzhi.liu@noaa.gov";
    String creator_name "Songzhi Liu";
    String creator_type "person";
    String creator_url "https://coastwatch.glerl.noaa.gov/";
    String disclaimer "https://coastwatch.glerl.noaa.gov/notice.html";
    Float64 Easternmost_Easting -75.8772964477539;
    Float64 geospatial_lat_max 50.60783767700195;
    Float64 geospatial_lat_min 38.880714416503906;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -75.8772964477539;
    Float64 geospatial_lon_min -92.41887664794922;
    String geospatial_lon_units "degrees_east";
    String history 
"2019-03-21T12:52:27Z (local files)
2019-03-21T12:52:27Z http://coastwatch.glerl.noaa.gov/griddap/test_30.das";
    String infoUrl "https://coastwatch.glerl.noaa.gov/";
    String institution "NOAA/GLERL/COASTWATCH";
    String keywords "coastwatch, consentration, data, distribution, earth, Earth Science > Oceans > Ocean Temperature > Water Temperature, environmental, glerl, glsea, great, great lakes, ice, ice distribution, ice_consentration, laboratory, lakes, local, nic, noaa, ocean, oceans, research, science, sea, sea_water_temperature, seawater, source, temperature, time, water";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "https://coastwatch.glerl.noaa.gov/notice.html";
    Float64 Northernmost_Northing 50.60783767700195;
    String references "https://coastwatch.glerl.noaa.gov/";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 38.880714416503906;
    String standard_name_vocabulary "CF Standard Name Table v29";
    String summary "Great Lakes GLSEA & NIC Ice. NOAA/GLERL/COASTWATCH data from a local source.";
    String time_coverage_end "2008-01-31T00:00:00Z";
    String time_coverage_start "2008-01-26T00:00:00Z";
    String title "Great Lakes GLSEA & NIC Ice. NOAA/GLERL/COASTWATCH data from a local source.";
    Float64 Westernmost_Easting -92.41887664794922;
  }
}

 

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://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.


 
ERDDAP, Version 1.82
Disclaimers | Privacy Policy | Contact