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Dataset Title:  Experimental NRT Global composite from NPP VIIRS created from Unprojected Swath Data from NPP VIIRS. Data provided by NOAA/NESDIS Center for Satellite Applications and Research)   RSS
Institution:  USDOC/NOAA/OAR/AOML/PHOD   (Dataset ID: VIIRS_OC_NRT)
Information:  Summary | License | Metadata | Background | Data Access Form
 
Graph Type: 
X Axis: 
Y Axis: 
Color: 
 
Dimension Ranges    Start    Stop
time (UTC)     specify just 1 value →
   
latitude (degrees_north)
   
   
longitude (degrees_east)
   
   
 
Graph Settings
Color Bar:    Continuity:    Scale:
      Min:    Max:    N Sections:
Draw the land mask:
 
(Please be patient. It may take a while to get the data.)
 
Optional:
Then set the File Type: and
or view the URL:
(Documentation / Bypass this form ) (File Type information)
    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";
    Int32 _Netcdf4Dimid 0;
    Float64 actual_range 1.5209856e+9, 1.5316128e+9;
    String axis "T";
    String calendar "Gregorian";
    String CoordinateAxisType "Time";
    String ioos_category "Time";
    String long_name "Reference 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";
    Int32 _Netcdf4Dimid 1;
    Float64 actual_range -89.98125, 89.98125;
    String axis "Y";
    String CoordinateAxisType "Lat";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Int32 _Netcdf4Dimid 2;
    Float64 actual_range -179.98125, 179.98125;
    String axis "X";
    String CoordinateAxisType "Lon";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  chlor_a {
    Float32 _FillValue NaN;
    Int32 _Netcdf4Dimid 0;
    Float32 actual_range 0.001, 392.5;
    Float32 colorBarMaximum 10.0;
    Float32 colorBarMinimum 0.0;
    String coordsys "geographic";
    String ioos_category "Ocean Color";
    String long_name "Chlorophyll Concentration, OC3 Algorithm";
    String references 
"NOAA/NESDIS Center for Satellite Applications and Research:https://www.star.
nesdis.noaa.gov/jpss/oceancolor.php";
    String standard_name "concentration_of_chlorophyll_in_sea_water";
    String units "mg m^-3";
    String variable_info "Experimental NRT Global composite from NPP VIIRS";
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    String comment "Global Daily chlor_a from VIIRS";
    String contact "Joaquin.Trinanes@noaa.gov";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "Joaquin.Trinanes@noaa.gov";
    String creator_name "NOAA/AOML/Atlantic OceanWatch";
    String creator_type "institution";
    String creator_url "http://www.aoml.noaa.gov/phod/";
    String data_source "USDOC/NOAA/OAR/AOML/PHOD";
    Float64 Easternmost_Easting 179.98125;
    Float64 geospatial_lat_max 89.98125;
    Float64 geospatial_lat_min -89.98125;
    Float64 geospatial_lat_resolution 0.0375;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 179.98125;
    Float64 geospatial_lon_min -179.98125;
    Float64 geospatial_lon_resolution 0.0375;
    String geospatial_lon_units "degrees_east";
    String history 
"2018-07-16 http://cwcgom.aoml.noaa.gov/thredds/dodsC/VIIRS_OC/OC.nc
2018-07-16 http://cwcgom.aoml.noaa.gov/griddap/VIIRS_OC_NRT.das";
    String infoUrl "http://oceanwatch.aoml.noaa.gov/thredds/dodsC/VIIRS_OC/OC.nc.html";
    String institution "USDOC/NOAA/OAR/AOML/PHOD";
    String keywords 
"algorithm, aoml, applications, aqua, atlantic, atmospheric, center, 
chemistry, chlor_a, chlorophyll, color, commerce, composite, concentration, 
concentration_of_chlorophyll_in_sea_water, created, data, department, 
division, environmental, experimental, global, imager, imager/radiometer, 
imaging, information, infrared, laboratory, meteorological, moderate, modis, 
national, near, near_real_time, nesdis, noaa, npp, nrt, oar, oc3, ocean, 
ocean color, oceanic, oceanographic, oceanography, oceans,
Oceans > Ocean Chemistry > Chlorophyll,
office, orbiting, partnership, phod, physical, polar, polar-orbiting, 
provided, radiometer, real, research, resolution, satellite, sea, seawater, 
service, spectroradiometer, states, suite, swath, time, united, unprojected, 
usdoc, viirs, visible, water";
    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, 
ERD, NOAA, 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.";
    Float64 Northernmost_Northing 89.98125;
    String origin "USDOC/NOAA/OAR/AOML/PHOD";
    String source_data "NOAA/NESDIS Center for Satellite Applications and Research";
    String sourceUrl "http://cwcgom.aoml.noaa.gov/thredds/dodsC/VIIRS_OC/OC.nc";
    Float64 Southernmost_Northing -89.98125;
    String spatial_resolution "0.0375 degree";
    String standard_name_vocabulary "CF Standard Name Table v32";
    String summary 
"Global Daily chlor_a from Visible and Infrared Imager/Radiometer 
Suite (VIIRS)";
    String time_coverage_end "2018-07-15T00:00:00Z";
    String time_coverage_start "2018-03-14T00:00:00Z";
    String title 
"Experimental NRT Global composite from NPP VIIRS created from Unprojected 
Swath Data from NPP VIIRS. Data provided by NOAA/NESDIS Center for Satellite 
Applications and Research)";
    Float64 Westernmost_Easting -179.98125;
  }
}

 

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 is a superset of the
OPeNDAP DAP hyperslab protocol.

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
   http://cwcgom.aoml.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
   http://cwcgom.aoml.noaa.gov/erddap/griddap/erdBAssta5day.htmlTable?sst[(2007-10-21T00:00:00)][0][(-75):100:(75)][(180):100:(360)]
Thus, the query is often a variable name (e.g., sst),
followed by a set of [] for each of the variable's dimensions
(for example, [time][altitude][latitude][longitude]),
with your desired (start):stride:(stop) values within each [].

For details, see the griddap Documentation.
 


ERDDAP, Version 1.30
Questions, comments, suggestions? Please send an email to joaquin dot trinanes at noaa dot gov
and include the ERDDAP URL directly related to your question or comment.
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