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Dataset Title:  Holyrood Buoy 1 Subscribe RSS
Institution:  MI   (Dataset ID: SMA_Holyrood_Buoy1)
Information:  Summary ? | License ? | Metadata | Background | Files | Make a graph
 
Variable ?   Optional
Constraint #1 ?
Optional
Constraint #2 ?
   Minimum ?
 
   Maximum ?
 
 time (Timestamp, UTC) ?          2022-09-27T14:50:00Z    2022-11-25T19:20:00Z
  < slider >
 wind_gust ?          "4.276056667386153"    "6.25991425049142"
 relative_wind_direction ?          "202.7935227200448"    "231.1702598911181"
 relative_wind_speed ?          "0.060550714"    "3.894543609729491"
 corrected_wind_direction ?          "116.8124127192268"    "338.5263875432627"
 corrected_speed ?          "0.061081119"    "5.640881068246954"
 pressure ?          "1001.2315539654144"    "1024.175437"
 relative_humidity ?          "64.35803497085762"    "89.8196995"
 temperature ?          "1.396290878373158"    "9.998085758039815"
 dewpoint ?          "-0.0087811660685"    "9.90069346584588"
 internal_date_and_time ?          "2022-09-26T14:48:20Z"    "2022-11-25T19:20:10Z"
 supply_voltage ?          "11.30016638935108"    "13.19966722129784"
 latitude2 (Latitude, degrees_north) ?          "47.404964"    "47.405192"
 longitude2 (Longitude, degrees_east) ?          "-53.134944"    "-53.135276"
 altitude2 (Altitude) ?          "-0.1"    "9.39"
 date ?          2.0220927E7    2.0221125E7
 time2 (Time) ?          1828.0    235824.0
 serial ?          7272.0    7272.0
 buoyid ?          ""    ""
 number_of_zero_crossings ?          166.0    694.0
 average_wave_height ?          0.01    0.57
 mean_spectral_period ?          1.6    6.5
 maximum_wave_height ?          0.02    1.62
 significant_wave_height ?          0.01    0.89
 significant_period ?          1.6    7.5
 average_height_of_highest_tenth_of_waves ?          0.01    1.09
 average_period_of_h10_waves ?          1.5    7.7
 mean_wave_period (Sea Surface Swell Wave Period) ?          1.7    6.3
 peak_period ?          1.6    10.0
 tp5 ?          1.6    9.9
 hmo ?          0.01    0.91
 mean_direction ?          3.7    317.4
 mean_spread ?          14.4    74.4
 
Server-side Functions ?
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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.6642902e+9, 1.669404e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Timestamp";
    String source_name "timestamp";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String time_precision "1970-01-01T00:00:00Z";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  wind_gust {
    String ioos_category "Wind";
    String long_name "Wind Gust";
  }
  relative_wind_direction {
    String ioos_category "Wind";
    String long_name "Relative Wind Direction";
  }
  relative_wind_speed {
    String ioos_category "Wind";
    String long_name "Relative Wind Speed";
  }
  corrected_wind_direction {
    String ioos_category "Wind";
    String long_name "Corrected Wind Direction";
  }
  corrected_speed {
    String ioos_category "Currents";
    String long_name "Corrected Speed";
  }
  pressure {
    String ioos_category "Pressure";
    String long_name "Pressure";
  }
  relative_humidity {
    String ioos_category "Meteorology";
    String long_name "Relative Humidity";
    String standard_name "relative_humidity";
  }
  temperature {
    String ioos_category "Temperature";
    String long_name "Temperature";
  }
  dewpoint {
    String ioos_category "Meteorology";
    String long_name "Dewpoint";
  }
  internal_date_and_time {
    String ioos_category "Time";
    String long_name "Internal Date And Time";
  }
  supply_voltage {
    String ioos_category "Unknown";
    String long_name "Supply Voltage";
  }
  latitude2 {
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude2 {
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  altitude2 {
    String ioos_category "Location";
    String long_name "Altitude";
    String standard_name "altitude";
  }
  date {
    Float64 actual_range 2.0220927e+7, 2.0221125e+7;
    String ioos_category "Time";
    String long_name "Date";
  }
  time2 {
    Float32 actual_range 1828.0, 235824.0;
    String ioos_category "Time";
    String long_name "Time";
    String standard_name "time";
  }
  serial {
    Float32 actual_range 7272.0, 7272.0;
    String ioos_category "Unknown";
    String long_name "Serial";
  }
  buoyid {
    String ioos_category "Unknown";
    String long_name "Buoyid";
  }
  number_of_zero_crossings {
    Float32 actual_range 166.0, 694.0;
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Statistics";
    String long_name "Number Of Zero Crossings";
  }
  average_wave_height {
    Float32 actual_range 0.01, 0.57;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Surface Waves";
    String long_name "Sea Surface Wave Significant Height";
    String standard_name "sea_surface_wave_significant_height";
  }
  mean_spectral_period {
    Float32 actual_range 1.6, 6.5;
    String ioos_category "Statistics";
    String long_name "Mean Spectral Period";
  }
  maximum_wave_height {
    Float32 actual_range 0.02, 1.62;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Surface Waves";
    String long_name "Sea Surface Wave Significant Height";
    String standard_name "sea_surface_wave_significant_height";
  }
  significant_wave_height {
    Float32 actual_range 0.01, 0.89;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Surface Waves";
    String long_name "Sea Surface Wave Significant Height";
    String standard_name "sea_surface_wave_significant_height";
  }
  significant_period {
    Float32 actual_range 1.6, 7.5;
    String ioos_category "Unknown";
    String long_name "Significant Period";
  }
  average_height_of_highest_tenth_of_waves {
    Float32 actual_range 0.01, 1.09;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Surface Waves";
    String long_name "Sea Surface Wave Significant Height";
    String standard_name "sea_surface_wave_significant_height";
  }
  average_period_of_h10_waves {
    Float32 actual_range 1.5, 7.7;
    Float64 colorBarMaximum 20.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Surface Waves";
    String long_name "Sea Surface Swell Wave Period";
    String standard_name "sea_surface_swell_wave_period";
  }
  mean_wave_period {
    Float32 actual_range 1.7, 6.3;
    Float64 colorBarMaximum 20.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Surface Waves";
    String long_name "Sea Surface Swell Wave Period";
    String standard_name "sea_surface_swell_wave_period";
  }
  peak_period {
    Float32 actual_range 1.6, 10.0;
    String ioos_category "Unknown";
    String long_name "Peak Period";
  }
  tp5 {
    Float32 actual_range 1.6, 9.9;
    String ioos_category "Unknown";
    String long_name "TP5";
  }
  hmo {
    Float32 actual_range 0.01, 0.91;
    String ioos_category "Unknown";
    String long_name "Hmo";
  }
  mean_direction {
    Float32 actual_range 3.7, 317.4;
    Float64 colorBarMaximum 360.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Currents";
    String long_name "Mean Direction";
  }
  mean_spread {
    Float32 actual_range 14.4, 74.4;
    String ioos_category "Statistics";
    String long_name "Mean Spread";
  }
 }
  NC_GLOBAL {
    String cde_ingest "False";
    String cdm_data_type "Other";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_name "MI";
    String creator_url "https://www.smartatlantic.ca/station_alt.html?id=holyrood_buoy1";
    String history 
"2026-04-30T21:54:17Z (local files)
2026-04-30T21:54:17Z https://www.smartatlantic.ca/erddap/tabledap/SMA_Holyrood_Buoy1.html";
    String infoUrl "https://www.smartatlantic.ca/station_alt.html?id=holyrood_buoy1";
    String institution "MI";
    String keywords "altitude, altitude2, atmosphere, atmospheric, average_height_of_highest_tenth_of_waves, average_period_of_h10_waves, average_wave_height, buoy, buoyid, corrected, corrected_speed, corrected_wind_direction, crossings, currents, data, date, dew, dew point, dewpoint, direction, earth, Earth Science > Atmosphere > Altitude > Station Height, Earth Science > Atmosphere > Atmospheric Water Vapor > Humidity, Earth Science > Oceans > Ocean Waves > Significant Wave Height, Earth Science > Oceans > Ocean Waves > Swells, Earth Science > Oceans > Ocean Waves > Wave Period, height, hmo, holyrood, humidity, internal, internal_date_and_time, latitude, latitude2, longitude, longitude2, maximum_wave_height, mean, mean_direction, mean_spectral_period, mean_spread, mean_wave_period, meteorology, number, number_of_zero_crossings, ocean, oceans, peak, peak_period, period, point, pressure, relative, relative_humidity, relative_wind_direction, relative_wind_speed, science, sea, sea_surface_swell_wave_period, sea_surface_wave_significant_height, seawater, serial, significant, significant_period, significant_wave_height, spectral, speed, spread, station, statistics, supply, supply_voltage, surface, surface waves, swell, swells, temperature, time, time2, timestamp, tp5, vapor, voltage, water, wave, waves, wind, zero";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "https://creativecommons.org/licenses/by/4.0/";
    String sourceUrl "(local files)";
    String standard_name_vocabulary "CF Standard Name Table v79";
    String summary "Holyrood Buoy 1. MI data from a local source.";
    String time_coverage_end "2022-11-25T19:20:00Z";
    String time_coverage_start "2022-09-27T14:50:00Z";
    String title "Holyrood Buoy 1";
  }
}

 

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.

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.


 
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