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Dataset Title:  Sardine Potential Habitat, MODIS Aqua Data, Near Real-Time, US West Coast,
2006-present, Daily
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Institution:  NOAA/NMFS/SWFSC/FRD   (Dataset ID: sardine_habitat_modis)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Files | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (UTC) ?      4831    1 day 4h 1m 6s (uneven)
  < slider >
 latitude (degrees_north) ?      961    0.025 (even)
  < slider >
 longitude (degrees_east) ?      681    0.025 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables)
 potential_habitat (Sardine Potential Habitat, MODIS, 1) ?
 potential_habitat_mask ?
 chlorophyll (Chlorophyll Concentration in Sea Water, mg m-3) ?
 sst (Sea Surface Temperature, degree_C) ?

File type: (more info)

(Documentation / Bypass this form) ?
 
(Please be patient. It may take a while to get the data.)


 

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    Int32 _ChunkSizes 1;
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.1367504e+9, 1.6239312e+9;
    String axis "T";
    String calendar "gregorian";
    String coverage_content_type "coordinate";
    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";
  }
  latitude {
    Int32 _ChunkSizes 961;
    String _CoordinateAxisType "Lat";
    Float64 actual_range 27.0, 51.0;
    String axis "Y";
    String coverage_content_type "coordinate";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    Int32 _ChunkSizes 681;
    String _CoordinateAxisType "Lon";
    Float64 actual_range -130.0, -113.0;
    String axis "X";
    String coverage_content_type "coordinate";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  potential_habitat {
    Int32 _ChunkSizes 1, 961, 681;
    Float32 _FillValue -99999.0;
    String ancillary_variables "potential_habitat_mask";
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum 0.0;
    String comment "Indicates the probable habitat suitability for sardines: 0-0.1 is poor habitat, 0.1-0.2 is good habitat, and 0.2-1.0 is optimal habitat. The model results are based on MODIS Aqua satellite data.";
    String coordsys "geographic";
    String coverage_content_type "modelResult";
    Int32 fraction_digits 2;
    String ioos_category "Fish Abundance";
    String long_name "Sardine Potential Habitat, MODIS";
    Float32 missing_value -99999.0;
    String units "1";
  }
  potential_habitat_mask {
    Int32 _ChunkSizes 1, 961, 681;
    Byte _FillValue -1;
    String _Unsigned "false";
    String colorBarContinuous "false";
    Float64 colorBarMaximum 8.0;
    Float64 colorBarMinimum 0.0;
    Int32 colorBarNSections 4;
    String colorBarPalette "Rainbow2";
    String comment "Masks of the probable habitat suitability for sardines: 1 is unsuitable, 3 is poor habitat, 5 is good habitat, and 7 is optimal habitat.";
    String coordsys "geographic";
    String coverage_content_type "thematicClassification";
    String flag_meanings "Unsuitable Bad Good Optimal";
    Byte flag_values 1, 3, 5, 7;
    String ioos_category "Other";
    String long_name "Qualitative Map of Sardine Habitat";
    Byte missing_value -1;
  }
  chlorophyll {
    Int32 _ChunkSizes 1, 961, 681;
    Float32 _FillValue -99999.0;
    String cell_methods "time: mean (interval: 8.0 day)";
    Float64 colorBarMaximum 30.0;
    Float64 colorBarMinimum 0.03;
    String colorBarScale "Log";
    String comment "Chlorophyll data is an 8-day composite starting 7 days prior to the timestamp";
    String coordsys "geographic";
    String coverage_content_type "physicalMeasurement";
    Int32 fraction_digits 2;
    String ioos_category "Ocean Color";
    String long_name "Chlorophyll Concentration in Sea Water";
    Float32 missing_value -99999.0;
    String standard_name "concentration_of_chlorophyll_in_sea_water";
    String units "mg m-3";
  }
  sst {
    Int32 _ChunkSizes 1, 961, 681;
    Float32 _FillValue -99999.0;
    String cell_methods "time: mean (interval: 8.0 day)";
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String comment "SST data is an 8-day composite starting 7 days prior to the timestamp";
    String coordsys "geographic";
    String coverage_content_type "physicalMeasurement";
    Int32 fraction_digits 1;
    String ioos_category "Temperature";
    String long_name "Sea Surface Temperature";
    Float32 missing_value -99999.0;
    String standard_name "sea_surface_temperature";
    String units "degree_C";
  }
  NC_GLOBAL {
    String acknowledgement "We thank NOAA CoastWatch West Coast  (https://coastwatch.pfeg.noaa.gov/) for generating and serving the Sardine Potential Habitat Model output";
    String cdm_data_type "Grid";
    String contributor_name "NOAA/CoastWatch/West Coast";
    String contributor_role "Daily production and distribution";
    String contributor_url "https://coastwatch.pfeg.noaa.gov/";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "juan.zwolinski at noaa.gov";
    String creator_name "NOAA/NMFS/SWFSC/FRD";
    String creator_type "group";
    String creator_url "https://www.fisheries.noaa.gov/about/fisheries-resources-division-southwest-fisheries-science-center";
    String date_created "2021-01-24T15:33:49Z";
    Float64 Easternmost_Easting -113.0;
    Float64 geospatial_lat_max 51.0;
    Float64 geospatial_lat_min 27.0;
    Float64 geospatial_lat_resolution 0.025;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -113.0;
    Float64 geospatial_lon_min -130.0;
    Float64 geospatial_lon_resolution 0.025;
    String geospatial_lon_units "degrees_east";
    String history 
"8 day composited of chlorophyll and sea surface temperature satellite data were obtained from:
https://coastwatch.pfeg.noaa.gov/erddap/griddap/erdMBsstd8day_LonPM180 and 
https://coastwatch.pfeg.noaa.gov/erddap/griddap/erdMBchla8day_LonPM180. The data were then applied to the sardine habitat model to obtain the potential habitat fields.
2021-06-19T19:13:31Z (local files)
2021-06-19T19:13:31Z http://coastwatch.pfeg.noaa.gov/erddap/griddap/sardine_habitat_modis.das";
    String id "sardine_habitat_modis";
    String infoUrl "https://swfscdata.nmfs.noaa.gov/AST/sardineHabitat/habitat.aspx";
    String institution "NOAA/NMFS/SWFSC/FRD";
    String instrument "MODIS Aqua";
    String keywords "aqua, chlor_a, chlorophyll, CoastWatch West Coast, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, Earth Science > Oceans > Ocean Optics > Ocean Color, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, FRD, habitat, modis, NOAA, potential, sardine, sea surface temperature, sst, SWFSC";
    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.";
    String naming_authority "gov.noaa.pfeg.coastwatch";
    Float64 Northernmost_Northing 51.0;
    String platform "MODIS";
    String publisher_email "erd.data at noaa.gov";
    String publisher_name "NOAA/NMFS/SWFSC/ERD, NOAA/CoastWatch/West Coast";
    String publisher_url 
"https://www.pfeg.noaa.gov/ 
        https://coastwatch.pfeg.noaa.gov/";
    String references "https://doi.org/10.1093/icesjms/fsr038";
    String sensor "Aqua";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 27.0;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "A habitat model of sardine distrubtion in the California Current based on satellite remote sensing chlorophyll and sea surface temperature data from the MODIS Aqua ocean color sensor.";
    String testOutOfDate "now-3days";
    String time_coverage_end "2021-06-17T12:00:00Z";
    String time_coverage_start "2006-01-08T20:00:00Z";
    String title "Sardine Potential Habitat, MODIS Aqua Data, Near Real-Time, US West Coast, 2006-present, Daily";
    Float64 Westernmost_Easting -130.0;
  }
}

 

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.


 
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