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Dataset Title:  Remote Sensing Reflectance at 667 nm, Aqua MODIS, NPP, 0.125 degrees, Gulf of
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Institution:  NOAA CoastWatch WCN   (Dataset ID: erdMGr667mday)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background | Files | Make a graph
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (Centered Time, UTC) ?      119    30 days 10h 34m 35s (uneven)
  < slider >
 altitude (m) ?      1    (just one value)
  < slider >
 latitude (degrees_north) ?      1201    0.0125 (even)
  < slider >
 longitude (degrees_east) ?      2001    0.0125 (even)
  < slider >
Grid Variables (which always also download all of the dimension variables) 
 MGr667 (uW cm-2 s-2 nm-1 sr-1) ?

File type: (more information)

(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 {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.0268208e+9, 1.3371696e+9;
    String axis "T";
    Int32 fraction_digits 0;
    String ioos_category "Time";
    String long_name "Centered Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  altitude {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "up";
    Float64 actual_range 0.0, 0.0;
    String axis "Z";
    Int32 fraction_digits 0;
    String ioos_category "Location";
    String long_name "Altitude";
    String positive "up";
    String standard_name "altitude";
    String units "m";
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 18.0, 33.0;
    String axis "Y";
    String coordsys "geographic";
    Int32 fraction_digits 4;
    String ioos_category "Location";
    String long_name "Latitude";
    String point_spacing "even";
    String standard_name "latitude";
    String units "degrees_north";
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -100.0, -75.0;
    String axis "X";
    String coordsys "geographic";
    Int32 fraction_digits 4;
    String ioos_category "Location";
    String long_name "Longitude";
    String point_spacing "even";
    String standard_name "longitude";
    String units "degrees_east";
  MGr667 {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum -25000.035;
    Float64 colorBarMinimum -25000.055;
    String coordsys "geographic";
    Int32 fraction_digits 3;
    String ioos_category "Optical Properties";
    String long_name "Remote Sensing Reflectance at 667 nm , Aqua MODIS, NPP, 0.125 degrees, Gulf of Mexico";
    Float32 missing_value NaN;
    String units "uW cm-2 s-2 nm-1 sr-1";
    String acknowledgement "NOAA NESDIS COASTWATCH, NOAA SWFSC ERD";
    String cdm_data_type "Grid";
    String composite "true";
    String contributor_name "NASA, NASA GSFC OBPG";
    String contributor_role "Source of level 2 data.";
    String Conventions "COARDS, CF-1.10, ACDD-1.3";
    String creator_email "";
    String creator_name "NOAA CoastWatch, West Coast Node";
    String creator_type "institution";
    String creator_url "";
    String date_created "2012-07-06";
    String date_issued "2012-07-06";
    Float64 Easternmost_Easting -75.0;
    Float64 geospatial_lat_max 33.0;
    Float64 geospatial_lat_min 18.0;
    Float64 geospatial_lat_resolution 0.0125;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -75.0;
    Float64 geospatial_lon_min -100.0;
    Float64 geospatial_lon_resolution 0.0125;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 0.0;
    Float64 geospatial_vertical_min 0.0;
    String geospatial_vertical_positive "up";
    String geospatial_vertical_units "m";
    String history 
2012-07-07T13:59:45Z NOAA CoastWatch (West Coast Node) and NOAA SFSC ERD
2024-07-22T17:07:36Z (local files)
    String id "LMGr667Smday_20020716120000";
    String infoUrl "";
    String institution "NOAA CoastWatch WCN";
    String keywords "altitude, aqua, coast, coastwatch, data, degrees, earth, Earth Science > Oceans > Ocean Optics > Radiance, gulf, gulf of mexico, imaging, mexico, MGr667, moderate, modis, national, noaa, node, npp, ocean, oceans, optical, optical properties, optics, orbiting, partnership, polar, polar-orbiting, properties, radiance, reflectance, remote, resolution, science, sensing, spectroradiometer, time, wcn, west";
    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, CoastWatch, 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 33.0;
    String origin "NASA, NASA GSFC OBPG";
    String processing_level "3";
    String project "CoastWatch (";
    String projection "geographic";
    String projection_type "mapped";
    String references "Aqua/MODIS information: . MODIS information: .";
    String satellite "Aqua";
    String sensor "MODIS";
    String source "satellite observation: Aqua, MODIS";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 18.0;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "Moderate Resolution Imaging Spectroradiometer (MODIS) measures the remote sensing reflectance (Rrs) at 667nm.  This can be used to view very high concentrations of phytoplankton in the very surface of the water.";
    String time_coverage_end "2012-05-16T12:00:00Z";
    String time_coverage_start "2002-07-16T12:00:00Z";
    String title "Remote Sensing Reflectance at 667 nm, Aqua MODIS, NPP, 0.125 degrees, Gulf of Mexico";
    Float64 Westernmost_Easting -100.0;


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{?query}
For example,[(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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