ERDDAP
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Brought to you by NOAA CoastWatch Great Lakes Node |
Dataset Title: | Color Producing Agent (CPA) Chlorophyll, MODIS, Lake Michigan (2013-2017) |
Institution: | CoastWatch Great Lakes Node (Dataset ID: LM_CHL_MODIS_SQ) |
Information: | Summary | License | FGDC | ISO 19115 | Metadata | Background | Data Access Form | Files |
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Attributes { time { String _CoordinateAxisType "Time"; Float64 actual_range 1.3714104e+9, 1.5089562e+9; String axis "T"; Int32 fraction_digits 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 41.5055765020687, 46.1450006205619; 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 -88.095000620562, -84.7054213615767; String axis "X"; String ioos_category "Location"; String long_name "Longitude"; String standard_name "longitude"; String units "degrees_east"; } chlorophyll { Float64 _FillValue -999.0; Float64 colorBarMaximum 20.0; Float64 colorBarMinimum 0.5; String colorBarPalette "CHL_Lake_S_M_H"; String colorBarScale "Log"; String grid_mapping "crs"; String ioos_category "Ocean Color"; String long_name "Chlorophyll-a, Aqua MODIS, Lake Michigan"; String standard_name "concentration_of_chlorophyll_in_sea_water"; String units "ug/L"; } NC_GLOBAL { String cdm_data_type "Grid"; Float32 colorBarMaximum 20.0; Float32 colorBarMinimum 0.5; String colorBarScale "Log"; String Conventions "CF-1.6, COARDS, ACDD-1.3"; Float64 Easternmost_Easting -84.7054213615767; String GDAL "GDAL 2.1.3, released 2017/20/01"; String GDAL_AREA_OR_POINT "Area"; Float64 geospatial_lat_max 46.1450006205619; Float64 geospatial_lat_min 41.5055765020687; Float64 geospatial_lat_resolution 0.009998758876062937; String geospatial_lat_units "degrees_north"; Float64 geospatial_lon_max -84.7054213615767; Float64 geospatial_lon_min -88.095000620562; Float64 geospatial_lon_resolution 0.009998758876062854; String geospatial_lon_units "degrees_east"; String history "Wed Mar 07 12:44:56 2018: GDAL CreateCopy( /mnt/cwdata/p/i/mcp/2017/10/M2017298183000_chl.nc22119.nc, ... ) 2024-11-14T13:57:36Z (local files) 2024-11-14T13:57:36Z https://apps.glerl.noaa.gov/griddap/LM_CHL_MODIS_SQ.das"; String infoUrl "https://coastwatch.glerl.noaa.gov/ocean-color/ocean-color.html"; String institution "CoastWatch Great Lakes Node"; String keywords "agent, aqua, Band1, chemistry, chlorophyll, chlorophyll-a, color, concentration, concentration_of_chlorophyll_in_sea_water, cpa, data, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, experimental, great, imaging, lakes, moderate, modis, ocean, ocean color, oceans, producing, resolution, sea, seawater, spectroradiometer, time, 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 46.1450006205619; String sourceUrl "(local files)"; Float64 Southernmost_Northing 41.5055765020687; String standard_name_vocabulary "CF Standard Name Table v29"; String summary "Color Producing Agent (CPA) Chlorophyll"; String time_coverage_end "2017-10-25T18:30:00Z"; String time_coverage_start "2013-06-16T19:20:00Z"; String title "Color Producing Agent (CPA) Chlorophyll, MODIS, Lake Michigan (2013-2017)"; Float64 Westernmost_Easting -88.095000620562; } }
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.