NOAA ERDDAP
Easier access to scientific data
log in    
Brought to you by NOAA NMFS SWFSC ERD    

ERDDAP > griddap > Data Access Form ?

Dataset Title:  NOAA Global Coral Bleaching Monitoring Products: Daily 5-km Subscribe RSS
Institution:  NOAA Coral Reef Watch   (Dataset ID: NOAA_DHW)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (UTC) ?      1871    1 day 0h 16m 10s (uneven)
  < slider >
 latitude (degrees_north) ?      3600    -0.05 (uneven)
  < slider >
 longitude (degrees_east) ?      7200    0.05 (uneven)
  < slider >
 
Grid Variables (which always also download all of the dimension variables)
 CRW_DHW (analysed degree heating week, Celsius weeks) ?
 CRW_HOTSPOT (analysed coral bleaching hotspot, Celsius) ?
 CRW_SST (analysed sea surface temperature, Celsius) ?
 CRW_SSTANOMALY (analysed sea surface temperature anomaly, Celsius) ?

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 1.3702608e+9, 1.5336432e+9;
    String axis "T";
    String calendar "gregorian";
    String comment "Nominal time of Level 4 analysis";
    String coverage_content_type "coordinate";
    String ioos_category "Time";
    String long_name "reference time of source daily sst analysis field";
    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 3600;
    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 {
    Int32 _ChunkSizes 7200;
    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;
  }
  CRW_DHW {
    Int32 _ChunkSizes 1, 1236, 2472;
    Float32 _FillValue 251.0;
    Float64 colorBarMaximum 16.0;
    Float64 colorBarMinimum 0.0;
    String comment "Degree Heating Week for each ocean grid point";
    String coordinates "lon lat time";
    String coverage_content_type "physicalMeasurement";
    String grid_mapping "crs";
    String ioos_category "Temperature";
    String long_name "analysed degree heating week";
    String reference "Liu, G, Heron SF, Eakin CM, Muller-Karger FE, Vega-Rodriguez M, Guild LS, De La Cour JL, Geiger EF, Skirving WJ, Burgess TFR, Strong AE, Harris A, Maturi E, Ignatov A, Sapper J, Li J, Lynds S (2014) Reef-scale Thermal Stress Monitoring of Coral Ecosystems: New 5-km Global Products from NOAA Coral Reef Watch, Remote Sensing 6(11): 11579-11606, doi:10.3390/rs61111579.";
    String source "npp viirs, metop-b avhrr, goese/w imager, msg seviri, mtsat imager";
    String units "Celsius weeks";
    Float32 valid_max 100.0;
    Float32 valid_min 0.0;
  }
  CRW_HOTSPOT {
    Int32 _ChunkSizes 1, 1200, 2400;
    Float32 _FillValue 251.0;
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum 0.0;
    String comment "Coral Bleaching HotSpot for each ocean grid point";
    String coordinates "lon lat time";
    String coverage_content_type "physicalMeasurement";
    String grid_mapping "crs";
    String ioos_category "Temperature";
    String long_name "analysed coral bleaching hotspot";
    String reference "Liu, G, Heron SF, Eakin CM, Muller-Karger FE, Vega-Rodriguez M, Guild LS, De La Cour JL, Geiger EF, Skirving WJ, Burgess TFR, Strong AE, Harris A, Maturi E, Ignatov A, Sapper J, Li J, Lynds S (2014) Reef-scale Thermal Stress Monitoring of Coral Ecosystems: New 5-km Global Products from NOAA Coral Reef Watch, Remote Sensing 6(11): 11579-11606, doi:10.3390/rs61111579.";
    String source "npp viirs, metop-b avhrr, goese/w imager, msg seviri, mtsat imager";
    String units "Celsius";
    Float32 valid_max 15.0;
    Float32 valid_min 0.0;
  }
  CRW_SST {
    Int32 _ChunkSizes 1, 1200, 2400;
    Float32 _FillValue 251.0;
    Float64 colorBarMaximum 34.0;
    Float64 colorBarMinimum -2.0;
    String comment "analysed night-only SST for each ocean grid point";
    String coordinates "lon lat time";
    String coverage_content_type "physicalMeasurement";
    String grid_mapping "crs";
    String ioos_category "Temperature";
    String long_name "analysed sea surface temperature";
    String reference "Liu, G, Heron SF, Eakin CM, Muller-Karger FE, Vega-Rodriguez M, Guild LS, De La Cour JL, Geiger EF, Skirving WJ, Burgess TFR, Strong AE, Harris A, Maturi E, Ignatov A, Sapper J, Li J, Lynds S (2014) Reef-scale Thermal Stress Monitoring of Coral Ecosystems: New 5-km Global Products from NOAA Coral Reef Watch, Remote Sensing 6(11): 11579-11606, doi:10.3390/rs61111579.";
    String source "npp viirs, metop-b avhrr, goese/w imager, msg seviri, mtsat imager";
    String standard_name "sea_surface_temperature";
    String units "Celsius";
    Float32 valid_max 50.0;
    Float32 valid_min -2.0;
  }
  CRW_SSTANOMALY {
    Int32 _ChunkSizes 1, 1200, 2400;
    Float32 _FillValue 251.0;
    Float64 colorBarMaximum 5.0;
    Float64 colorBarMinimum -5.0;
    String comment "analysed night-only SST anomaly for each ocean grid point";
    String coordinates "lon lat time";
    String coverage_content_type "physicalMeasurement";
    String grid_mapping "crs";
    String ioos_category "Temperature";
    String long_name "analysed sea surface temperature anomaly";
    String reference "Liu, G, Heron SF, Eakin CM, Muller-Karger FE, Vega-Rodriguez M, Guild LS, De La Cour JL, Geiger EF, Skirving WJ, Burgess TFR, Strong AE, Harris A, Maturi E, Ignatov A, Sapper J, Li J, Lynds S (2014) Reef-scale Thermal Stress Monitoring of Coral Ecosystems: New 5-km Global Products from NOAA Coral Reef Watch, Remote Sensing 6(11): 11579-11606, doi:10.3390/rs61111579.";
    String source "npp viirs, metop-b avhrr, goese/w imager, msg seviri, mtsat imager";
    String units "Celsius";
    Float32 valid_max 15.0;
    Float32 valid_min -15.0;
  }
  NC_GLOBAL {
    String acknowledgement "NOAA Coral Reef Watch";
    String cdm_data_type "Grid";
    String comment "This product is a product of the Coral Reef Watch Daily 5-km Global Satellite Coral Bleaching Heat Stress Monitoring Product Suite Version 3.0.";
    String contributor_name "C. Mark Eakin";
    String contributor_role "Coordinator, NOAA Coral Reef Watch";
    String Conventions "CF-1.6, ACDD-1.3";
    String creator_email "coralreefwatch@noaa.gov";
    String creator_institution "National Oceanic and Atmospheric Administration (NOAA)";
    String creator_name "NOAA Coral Reef Watch";
    String creator_type "institution";
    String creator_url "http://coralreefwatch.noaa.gov";
    String date_created "2017-05-19";
    String date_issued "2017-05-19";
    String date_metadata_modified "2017-05-19";
    String date_modified "2017-05-19";
    Float64 Easternmost_Easting 179.975;
    String geospatial_bounds "POLYGON ((-90 -180, 90 -180, 90 180, -90 180, -90 -180))";
    String geospatial_bounds_crs "EPSG:4326";
    Float64 geospatial_lat_max 89.975;
    Float64 geospatial_lat_min -89.975;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 179.975;
    Float64 geospatial_lon_min -179.975;
    String geospatial_lon_units "degrees_east";
    String history 
"Data obtained from NOAA Coral Reef Watch and re-distributed via THREDDS Data Server (TDS) at the Pacific Islands Ocean Observing System (PacIOOS) to provide temporal aggregation and distribution through NetCDF/OPeNDAP utilities like Godiva2, Live Access Server (LAS), and ERDDAP.
2018-08-14T10:39:59Z http://localhost:8080/thredds/dodsC/hioos/satellite/dhw_5km
2018-08-14T10:39:59Z http://coastwatch.pfeg.noaa.gov/erddap/griddap/NOAA_DHW.das";
    String id "dhw_5km";
    String infoUrl "http://coralreefwatch.noaa.gov/satellite/";
    String institution "NOAA Coral Reef Watch";
    String instrument "Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Imaging Spectrometers/Radiometers > AHI > Advanced Himawari Imager, Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Imaging Spectrometers/Radiometers > AVHRR > Advanced Very High Resolution Radiometer, Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Imaging Spectrometers/Radiometers > GOES-13 Imager > Geostationary Operational Environmental Satellite 13-Imager, Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Imaging Spectrometers/Radiometers > GOES-15 Imager > Geostationary Operational Environmental Satellite 15-Imager, Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Imaging Spectrometers/Radiometers > SEVIRI > Spinning Enhanced Visible and Infrared Imager, Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Imaging Spectrometers/Radiometers > VIIRS > Visible-Infrared Imager-Radiometer Suite";
    String instrument_vocabulary "GCMD Instrument Keywords";
    String ISO_Topic_Categories "biota, oceans";
    String keywords "Earth Science > Oceans > Coastal Processes > Coral Reefs, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "Proper credit and citation to NOAA Coral Reef Watch are requested when using these data. 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, University of Hawaii, PacIOOS, NOAA, State of Hawaii 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 locations "Geographic Region > Global Ocean";
    String locations_vocabulary "GCMD Location Keywords";
    String Metadata_Link "http://www.pacioos.hawaii.edu/metadata/dhw_5km.html";
    String naming_authority "org.pacioos";
    Float64 Northernmost_Northing 89.975;
    String platform "Earth Observation Satellites > GOES (Geostationary Operational Environmental Satellite) > GOES-13, Earth Observation Satellites > GOES (Geostationary Operational Environmental Satellite) > GOES-15, Earth Observation Satellites > Himawari > Himawari Meteorological Satellites, Earth Observation Satellites > Joint Polar Satellite System (JPSS) > SUOMI-NPP > Suomi National Polar-orbiting Partnership, Earth Observation Satellites > METEOSAT > METEOSAT-10, Earth Observation Satellites > METOP > METOP-B > Meteorological Operational Satellite - B";
    String platform_vocabulary "GCMD Platform Keywords";
    String processing_level "Level 4";
    String product_version "3.0";
    String program "NOAA Coral Reef Watch";
    String project "NOAA Coral Reef Watch";
    String publisher_email "info@pacioos.org";
    String publisher_institution "University of Hawaii";
    String publisher_name "Pacific Islands Ocean Observing System (PacIOOS)";
    String publisher_type "group";
    String publisher_url "http://www.pacioos.hawaii.edu";
    String references "http://coralreefwatch.noaa.gov/satellite/";
    String source "satellite data";
    String sourceUrl "http://localhost:8080/thredds/dodsC/hioos/satellite/dhw_5km";
    Float64 Southernmost_Northing -89.975;
    String spatial_resolution "0.05 degree";
    String standard_name_vocabulary "CF Standard Name Table v39";
    String summary "Contains a suite of NOAA Coral Reef Watch (CRW) version 3 operational global satellite coral bleaching thermal stress monitoring products at 5-km resolution produced daily in near real-time, including sea surface temperature (SST), SST anomaly, HotSpot, and Degree Heating Weeks (DHW). These data are based on the NOAA/NESDIS operational daily global 5-km geostationary-polar-orbiting (Geo-Polar) blended night-only SST analysis. The SST anomaly is the difference of SST compared to daily SST climatology. The coral bleaching HotSpot is a special type of sea surface temperature (SST) anomaly and shows the difference of SST compared to a coral bleaching SST threshold climatology. Only the positive anomalies (potential thermal stress inducing coral bleaching) are highlighted. DHW is the accumulation of Coral Bleaching HotSpots over a period of 12 consecutive weeks. The DHW value at any particular location at any particular time is the summation of the product of HotSpot values which are at least 1 deg C above the bleaching threshold SST and their durations in weeks over the most recent 12-week period. One DHW is equivalent to 1 week of SST at 1 deg C above the threshold or 0.5 week of SST at 2 deg C above the threshold, etc.  The units for DHW are deg C-weeks, combining the intensity and duration of thermal stress into one single number. Based on research at Coral Reef Watch, when the thermal stress reaches 4 deg C-weeks, you can expect to see significant coral bleaching, especially in more sensitive species. When thermal stress is 8 deg C-weeks or higher, you would likely see widespread bleaching and mortality from the thermal stress.";
    String testOutOfDate "now-60hours";
    String time_coverage_duration "P1D";
    String time_coverage_end "2018-08-07T12:00:00Z";
    String time_coverage_resolution "P1D";
    String time_coverage_start "2013-06-03T12:00:00Z";
    String title "NOAA Global Coral Bleaching Monitoring Products: Daily 5-km";
    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.


 
ERDDAP, Version 1.82
Disclaimers | Privacy Policy | Contact