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Dataset Title:  NOAA Coral Reef Watch Daily Global 5km Satellite Coral Bleaching Degree
Heating Week
  RSS
Institution:  NOAA/NESDIS/STAR Coral Reef Watch Program   (Dataset ID: noaacrwdhwDaily)
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:   
 
(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 4.806e+8, 1.7127504e+9;
    String axis "T";
    String coverage_content_type "coordinate";
    String ioos_category "Time";
    String long_name "reference time of the data";
    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";
    Float32 actual_range -89.975, 89.975;
    String axis "Y";
    String comment "equirectangular projection and grid centers";
    String coverage_content_type "coordinate";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
    Float32 valid_max 89.975;
    Float32 valid_min -89.975;
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -179.975, 179.975;
    String axis "X";
    String comment "equirectangular projection and grid centers";
    String coverage_content_type "coordinate";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
    Float32 valid_max 179.975;
    Float32 valid_min -179.975;
  }
  mask {
    Byte _FillValue -5;
    String _Unsigned "true";
    Float64 colorBarMaximum 5.0;
    Float64 colorBarMinimum 0.0;
    String comment "A 2D array, in the same size as the data array in the X and Y directions, classifying land, missing, and ice pixels that are all flagged by the same missing_value (specified by the variable attribute _FillValue) in the data array(s), along with water (data) pixels.";
    String coverage_content_type "thematicClassification";
    String flag_meanings "valid-water land missing ice";
    Byte flag_values 0, 1, 2, 4;
    String ioos_category "Quality";
    String long_name "pixel characteristics flag array";
    String units "pixel_classification";
  }
  degree_heating_week {
    Float64 _FillValue -327.68;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String coverage_content_type "physicalMeasurement";
    String ioos_category "Temperature";
    String long_name "degree heating week";
    String units "degree_Celsius_weeks";
    Float64 valid_max 100.0;
    Float64 valid_min 0.0;
  }
  NC_GLOBAL {
    String acknowledgement "NOAA Coral Reef Watch Program";
    String cdm_data_type "Grid";
    String comment "This is a product of the NOAA Coral Reef Watch Daily Global 5km Satellite Coral Bleaching Heat Stress Monitoring Product Suite Version 3.1.";
    String contributor_name "NOAA Coral Reef Watch Program";
    String contributor_role "Collecting source data and deriving products; performing quality control of products; disseminating, storing, and submitting data to archive";
    String Conventions "CF-1.6, ACDD-1.3, COARDS";
    String creator_email "coralreefwatch@noaa.gov";
    String creator_institution "NOAA/NESDIS/STAR Coral Reef Watch Program";
    String creator_name "NOAA Coral Reef Watch Program";
    String creator_type "group";
    String creator_url "https://coralreefwatch.noaa.gov/";
    String date_created "2018-03-01T12:00:00Z";
    String date_issued "2023-08-18T14:17:34Z";
    String date_metadata_modified "2020-11-18T12:00:00Z";
    String date_modified "2018-03-01T12:00:00Z";
    String defaultGraphQuery "degree_heating_week%5B(last)%5D%5B(-89.975):(89.975)%5D%5B(-179.975):(179.975)%5D%26.draw=surface%26.vars=longitude%7Clatitude%7Cdegree_heating_week%26.colorBar=CRW_dhw%7C%7C%7C0%7C20%7C%26.bgColor=0xffccccff";
    Float64 Easternmost_Easting 179.975;
    String geospatial_bounds "POLYGON((-90.0 180.0, 90.0 180.0, 90.0 -180.0, -90.0 -180.0, -90.0 180.0))";
    String geospatial_bounds_crs "EPSG:4326";
    Float64 geospatial_lat_max 89.975;
    Float64 geospatial_lat_min -89.975;
    Float64 geospatial_lat_resolution 0.049999999999999996;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 179.975;
    Float64 geospatial_lon_min -179.975;
    Float64 geospatial_lon_resolution 0.049999999999999996;
    String geospatial_lon_units "degrees_east";
    String grid_mapping_epsg_code "EPSG:4326";
    Float32 grid_mapping_inverse_flattening 298.2572;
    String grid_mapping_name "latitude_longitude";
    Float32 grid_mapping_semi_major_axis 6378137.0;
    String history 
"This is a product data file of the NOAA Coral Reef Watch Daily Global 5km Satellite Coral Bleaching Heat Stress Monitoring Product Suite Version 3.1 (v3.1) in its NetCDF Version 1.0 (v1.0).
2024-04-12T10:44:46Z (local files)
2024-04-12T10:44:46Z https://coastwatch.noaa.gov/griddap/noaacrwdhwDaily.das";
    String id "Satellite_Daily_Global_5km_Degree_Heating_Week";
    String infoUrl "https://coralreefwatch.noaa.gov/product/5km/index.php";
    String institution "NOAA/NESDIS/STAR Coral Reef Watch Program";
    String instrument "ATSR-1, ATSR-2, AATSR, AVHRR, AVHRR-2, AVHRR-3, VIIRS, GOES Imager, MTSAT Imager, MTSAT 2 Imager, AHI, ABI, SEVIRI, buoy - moored buoy, buoy - drifting buoy, buoy - TAO buoy, surface seawater intake";
    String instrument_vocabulary "NOAA NODC Ocean Archive System Instruments";
    String keywords "5km, array, bleaching, characteristics, coral, crw, daily, data, day, degree, degree_heating_week, Earth Science > Oceans > Ocean Temperature > Degree Heating Week, Earth Science > Oceans > Ocean Temperature > Water Temperature, Earth Science > Spectral/Engineering > Infrared Wavelengths > Thermal Infrared, engineering, environmental, flag, global, heating, information, infrared, mask, national, nesdis, noaa, ocean, oceans, pixel, program, quality, reef, satellite, service, spectral, spectral/engineering, star, temperature, thermal, time, watch, water, wavelengths, week";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "The data produced by Coral Reef Watch are available for use without restriction, but Coral Reef Watch relies on the ethics and integrity of the user to ensure that the source of the data and products is appropriately cited and credited. When using these data and products, credit and courtesy should be given to NOAA Coral Reef Watch. Please include the appropriate DOI associated with this dataset in the citation. For more information, visit the NOAA Coral Reef Watch website: https://coralreefwatch.noaa.gov. Recommendations for citing and providing credit are provided at https://coralreefwatch.noaa.gov/satellite/docs/recommendations_crw_citation.php. Users are referred to the footer section of the Coral Reef Watch website (https://coralreefwatch.noaa.gov/index.php) for disclaimers, policies, notices pertaining to the use of the data.";
    String metadata_link "https://coralreefwatch.noaa.gov/product/5km/index.php";
    String naming_authority "gov.noaa.coralreefwatch";
    Float64 Northernmost_Northing 89.975;
    String platform "Ships, drifting buoys, moored buoys, TOGA-TAO buoy arrays, GOES-8 satellite, GOES-9 satellite, GOES-10 satellite, GOES-11 satellite, GOES-12 satellite, GOES-13 satellite, GOES-14 satellite, GOES-15 satellite, GOES-16 satellite, MTSAT-1R satellite, MTSAT-2 satellite, Himawari-8 satellite, Meteosat-8 satellite, Meteosat-9 satellite, Meteoset-10 satellite, Meteosat-11 satellite, Suomi NPP, MetOp-A satellite, MetOp-B satellite, NOAA-9 satellite, NOAA-11 satellite, NOAA-12 satellite, NOAA-14 satellite, NOAA-15 satellite, NOAA-16 satellite, NOAA-17 satellite, NOAA-18 satellite, NOAA-19 satellite.";
    String platform_vocabulary "NOAA NODC Ocean Archive System Platforms";
    String processing_level "Derived from L4 satellite sea surface temperaure analysis";
    String product_version "3.1";
    String program "NOAA Coral Reef Watch Program";
    String project "NOAA Coral Reef Watch Program";
    String publisher_email "coralreefwatch@noaa.gov";
    String publisher_institution "NOAA/NESDIS/STAR Coral Reef Watch Program";
    String publisher_name "NOAA Coral Reef Watch Program";
    String publisher_type "group";
    String publisher_url "https://coralreefwatch.noaa.gov";
    String references "https://coralreefwatch.noaa.gov/product/5km/index.php";
    String source "Coral Reef Watch Daily Global 5km Satellite Sea Surface Temperature v3.1 (CoralTemp v3.1)";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -89.975;
    String spatial_resolution "0.05 degrees";
    String standard_name_vocabulary "CF Standard Name Table v27";
    String summary "This is a product of NOAA Coral Reef Watch Daily Global 5km Satellite Coral Bleaching Heat Stress Monitoring Product Suite";
    String testOutOfDate "now-3days";
    String time_coverage_duration "P1D";
    String time_coverage_end "2024-04-10T12:00:00Z";
    String time_coverage_resolution "P1D";
    String time_coverage_start "1985-03-25T12:00:00Z";
    String title "NOAA Coral Reef Watch Daily Global 5km Satellite Coral Bleaching Degree Heating Week";
    Float64 Westernmost_Easting -179.975;
  }
}

 

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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