Data Access Form

Dataset Title:	Backyard Buoys - PacIOOS - Guam: Hagat (Smart Mooring)
Institution:	Bureau of Statistics and Plans, Guam Coastal Management Program (Dataset ID: backyardbuoys_hagat_smart)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Files \| Make a graph

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Variable

Optional
Constraint #1

Optional
Constraint #2

Minimum

or a List of Values

Maximum

location_id (1)

"hagat"

time (UTC)

2025-07-18T19:15:30Z

2025-07-19T17:15:30Z

buoy_id (1)

latitude (degrees_north)

13.348833

13.3493

longitude (degrees_east)

144.636283

144.6366

depth (m)

20.0

sea_water_temperature (degree_C)

29.79

29.96

Server-side Functions

distinct()

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File type: (more information)

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(Please be patient. It may take a while to get the data.)

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  location_id {
    String cf_role "timeseries_id";
    String description "Backyard Buoys Location ID";
    String ioos_category "Identifier";
    String long_name "Location Id";
    String units "1";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.75286613e+9, 1.75294533e+9;
    String axis "T";
    String calendar "gregorian";
    String description "time of sampling";
    String gts_ingest "true";
    String ioos_category "Time";
    String long_name "Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String timezone "UTC";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  buoy_id {
    String description "Backyard Buoys Sofar Spotter Buoy ID";
    String gts_ingest "false";
    String ioos_category "Identifier";
    String long_name "Buoy Id";
    String units "1";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 13.348833, 13.3493;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String description "Latitude";
    String gts_ingest "true";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range 144.636283, 144.6366;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String description "Longitude";
    String gts_ingest "true";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float64 actual_range 20.0, 20.0;
    String axis "Z";
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String description "Z-coordinate of observation in vertical distance below reference. Down is positive. (reference is sea surface)";
    String gts_ingest "true";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  sea_water_temperature {
    Float64 actual_range 29.79, 29.96;
    String ancillary_variables "sea_water_temperature_qc_agg sea_water_temperature_qc_gross_range_test sea_water_temperature_qc_rate_of_change_test sea_water_temperature_qc_spike_test sea_water_temperature_qc_flat_line_test";
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String coverage_content_type "physicalMeasurement";
    String description "Sea Water Temperature";
    String gts_ingest "true";
    String ioos_category "Temperature";
    String long_name "Sea Water Temperature";
    String standard_name "sea_water_temperature";
    String units "degree_C";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "location_id, latitude, longitude";
    String citation "Bureau of Statistics and Plans, Guam Coastal Management Program. 2025. backyardbuoys_hagat. Backyard Buoys. https://backyardbuoys.org/erddap/Backyard Buoys - PacIOOS - Guam: Hagat (Smart Mooring)";
    String contributor_name "Backyard Buoys, NSF";
    String contributor_role "publisher, funder";
    String contributor_role_vocabulary "https://vocab.nerc.ac.uk/collection/G04/current/";
    String contributor_url "https://backyardbuoys.org/, https://new.nsf.gov/funding/initiatives/convergence-accelerator/";
    String Conventions "CF-1.10, ACDD-1.3, IOOS-1.2, COARDS";
    String creation_date "2025-07-17";
    String creator_country "United States";
    String creator_email "gcmp@bsp.guam.gov";
    String creator_institution "Bureau of Statistics and Plans, Guam Coastal Management Program";
    String creator_name "BSP";
    String creator_sector "state_government";
    String creator_type "institution";
    String creator_url "https://bsp.guam.gov/";
    String defaultDataQuery "time,latitude,longitude,sea_water_temperature,depth&time>=max(time)-30days";
    String defaultGraphQuery 
"time,sea_water_temperature,depth
        &time>=max(time)-30days
\t&.draw=markers
        &.vars=time|sea_water_temperature|depth
        &.yRange=||true
        &.marker=11|3";
    Float64 Easternmost_Easting 144.63665;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 13.3493;
    Float64 geospatial_lat_min 13.348833;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 144.6366;
    Float64 geospatial_lon_min 144.636283;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 20.0;
    Float64 geospatial_vertical_min 20.0;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String gts_ingest "true";
    String history 
"Making the files
2025-07-19T18:06:09Z (local files)
2025-07-19T18:06:09Z https://erddap.backyardbuoys.org/erddap/tabledap/backyardbuoys_hagat_smart.html";
    String infoUrl "https://backyardbuoys.org/";
    String institution "Bureau of Statistics and Plans, Guam Coastal Management Program";
    String ioos_regional_association "PacIOOS";
    String ioos_regional_association_url "https://www.pacioos.hawaii.edu/";
    String keywords "agg, aggregate, aggregate_quality_flag, association, backyardbuoys, buoy, buoy_id, change, data, density, direction, directional, earth, earth science &gt, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, Earth Science > Oceans > Ocean Waves > Significant Wave Height, Earth Science > Oceans > Ocean Waves > Wave Period, Earth Science > Oceans > Ocean Waves > Wave Spectra, Earth Science > Oceans > Ocean Waves > Wave Speed/Direction, flag, flat, flat_line_test_quality_flag, foundation, gross, gross_range_test_quality_flag, height, identifier, latitude, line, location_id, longitude, maximum, mean, source, spectra, spectral, speed, spike, spike_test_quality_flag, spread, station, statistics, surface, surface waves, systems, temperature, test, tests, time, variance, wave, wave period, wave spectra, wave speed/direction, waves, with";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "https://creativecommons.org/licenses/by-nc/4.0/deed.en";
    String location_id "hagat";
    String location_name "Hagat";
    String naming_authority "wmo";
    Float64 Northernmost_Northing 13.3493;
    String platform "buoy";
    String platform_description "Sofar Spotter Buoy, moored";
    String platform_vocabulary "https://mmisw.org/ont/ioos/platform";
    String program "Backyard Buoys";
    String program_url "https://backyardbuoys.org/";
    String project "Backyard Buoys";
    String publisher_country "United States";
    String publisher_email "setht1@uw.edu";
    String publisher_institution "Backyard Buoys";
    String publisher_name "Seth Travis";
    String publisher_type "institution";
    String publisher_url "https://backyardbuoys.org/";
    String quality_control_method "https://ioos.noaa.gov/ioos-in-action/wave-data/";
    String region "Guam";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 13.3489;
    String standard_name_vocabulary "CF Standard Name Table v85";
    String subsetVariables "buoy_id";
    String summary "Surface wave and water conditions, as collected as part of the Backyard Buoys program";
    String testOutOfDate "now-30days";
    String time_coverage_end "2025-07-19T17:15:30Z";
    String time_coverage_start "2025-07-18T19:15:30Z";
    String title "Backyard Buoys - PacIOOS - Guam: Hagat (Smart Mooring)";
    Float64 Westernmost_Easting 144.63625;
  }
}

Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP (external link)

Data Access Protocol (DAP) (external link)

and its selection 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.

(easy) You can get data by using the dataset's Data Access Form or Subset form. They make the URL for you.
(easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
(not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.

Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names, followed by a collection of constraints (e.g., variable<value), each preceded by '&' (which is interpreted as "AND").

For details, see the tabledap Documentation.