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Dataset Title:  Realtime data from Environment and Climate Change Canada buoys Subscribe RSS
Institution:  DFO MEDS   (Dataset ID: DFO_MEDS_BUOYS)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Subset | Make a graph
 
Variable ?   Optional
Constraint #1 ?
Optional
Constraint #2 ?
   Minimum ?
   or a List of Values ?
   Maximum ?
 
 STN_ID (Station ID) ?      
   - +  ?
 time (Sampling Time, UTC) ?              
 Q_FLAG ?      
   - +  ?
 latitude (degrees_north) ?      
   - +  ?
  < slider >
 longitude (degrees_east) ?      
   - +  ?
  < slider >
 water_depth (m) ?              
 VCAR (m) ?              
 VTPK (Wave spectrum peak period, s) ?              
 VWH (m) ?              
 VCMX (m) ?              
 VTP (s) ?              
 WDIR (degrees_true) ?              
 WSPD (Wind Speed, m/s) ?              
 WSS (Horizontal wind speed, m/s) ?              
 GSPD (Gust wind speed, m/s) ?              
 WDIR2 (degrees_true) ?              
 WSPD2 (Horizontal wind speed, m/s) ?              
 WSS_2 (m/s) ?              
 GSPD2 (Gust wind speed, m/s) ?              
 ATMS (mbar) ?              
 ATMS2 (mbar) ?              
 DRYT (Dry bulb temperature, °C) ?              
 SSTP (Sea surface temperature, °C) ?              
 SSTP_flags (SSTP Q Flags, Quality flags) ?              
 SSTP_UQL (UNESCO Q Level, UNESCO QC) ?              
 
Server-side Functions ?
 distinct() ?
? ("Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.")

File type: (more info)

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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 {
  STN_ID {
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
    String long_name "Station ID";
  }
  time {
    String _CoordinateAxisType "Time";
    String axis "T";
    String ioos_category "Time";
    String long_name "Sampling Time";
    String source_name "sampling_time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  Q_FLAG {
    Byte actual_range 0, 9;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String comment "The quality codes are based on the IGOSS quality codes. For data posted before 2 April 2020, quality codes were assigned subjectively to individual spectral records based on the shape of the spectral curve and relative values of significant wave height (VCAR) and peak period (VTPK) as recomputed from the spectra by MEDS. No assessment of any additional reported parameters is implied by the quality code. Spectra-based QC was discontinued on 2 April 2020, but the off-position check (QC flag of 7) is still carried out.";
    String flag_meanings 
"0: Blank - No quality control (QC) has been performed
                1: Good - QC has been performed: record appears correct
                3: Doubtful - QC has been performed: record appears doubtful
                4: Erroneous - QC has been performed: record appears erroneous
                5: Changes - The record has been changed as a result of QC
                6: Acceptable - QC has been performed: record seems inconsistent with other records
                7: Off Position - There is a problem with the buoy position or mooring. Data may still be useful.
                8: Reserved
                9: Reserved - indicates missing elements";
    Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
    String ioos_category "Quality";
    String long_name "Q FLAG";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 7.41, 74.62;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -145.0, -46.32;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  water_depth {
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String ioos_category "Location";
    String long_name "Water Depth";
    String units "m";
  }
  VCAR {
    String ioos_category "Surface Waves";
    String long_name "Characteristic significant wave height";
    String units "m";
  }
  VTPK {
    String ioos_category "Surface Waves";
    String long_name "Wave spectrum peak period";
    String units "s";
  }
  VWH {
    String ioos_category "Surface Waves";
    String long_name "Characteristic significant wave height (reported by the buoy)";
    String units "m";
  }
  VCMX {
    String ioos_category "Surface Waves";
    String long_name "Maximum zero crossing wave height (reported by the buoy)";
    String units "m";
  }
  VTP {
    String ioos_category "Surface Waves";
    String long_name "Wave spectrum peak period (reported by the buoy)";
    String units "s";
  }
  WDIR {
    String ioos_category "Wind";
    String long_name "Direction from which the wind is blowing";
    String units "degrees_true";
  }
  WSPD {
    Float64 colorBarMaximum 15.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Wind";
    String long_name "Wind Speed";
    String standard_name "wind_speed";
    String units "m/s";
  }
  WSS {
    String ioos_category "Wind";
    String long_name "Horizontal wind speed";
    String units "m/s";
  }
  GSPD {
    String ioos_category "Wind";
    String long_name "Gust wind speed";
    String units "m/s";
  }
  WDIR2 {
    String ioos_category "Wind";
    String long_name "Direction from which the wind is blowing";
    String units "degrees_true";
  }
  WSPD2 {
    String ioos_category "Wind";
    String long_name "Horizontal wind speed";
    String units "m/s";
  }
  WSS_2 {
    String ioos_category "Wind";
    String long_name "Horizontal scalar wind speed";
    String units "m/s";
  }
  GSPD2 {
    String ioos_category "Wind";
    String long_name "Gust wind speed";
    String units "m/s";
  }
  ATMS {
    String ioos_category "Pressure";
    String long_name "Atmospheric pressure at sea level";
    String units "mbar";
  }
  ATMS2 {
    String ioos_category "Pressure";
    String long_name "Atmospheric pressure at sea level";
    String units "mbar";
  }
  DRYT {
    String ioos_category "Temperature";
    String long_name "Dry bulb temperature";
    String units "°C";
  }
  SSTP {
    String ioos_category "Temperature";
    String long_name "Sea surface temperature";
    String standard_name "sea_water_temperature";
    String units "°C";
  }
  SSTP_flags {
    String flag_meanings 
"1: Sensor Malfunction
                2: Sensor Drift
                3: Big Satellite Difference
                4: 25+ samples
                5: Imprecise Day
                6: Many temp jumps
                7: Jump, not evaluated
                8: Temperature Jump
                9: Unlikely outlier
                10: Cosmetic outlier
                11: Mod temp diff with large jump
                12: Small temp diff with large jump
                13: Mod temp diff w/o large jump
                14: Small temp diff w/o large jump
                15: Moderate Satellite Difference
                16: Small satellite Difference";
    Byte flag_values 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16;
    String ioos_category "Quality";
    String long_name "SSTP Q Flags";
    String units "Quality flags";
  }
  SSTP_UQL {
    String flag_meanings "Pass, Not evaluated, Suspect or Of High Interest, Fail, Missing data";
    Byte flag_values 1, 2, 3, 4, 9;
    String ioos_category "Quality";
    String long_name "UNESCO Q Level";
    String units "UNESCO QC";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "STN_ID";
    String contributor_name "DFO MEDS";
    String contributor_role "owner";
    String Conventions "COARDS, CF-1.6, ACDD-1.3, NCCSV-1.1";
    String creator_email "service@meds-sdmm.dfo-mpo.gc.ca";
    String creator_name "DFO MEDS";
    String creator_type "institution";
    String creator_url "meds-sdmm.dfo-mpo.gc.ca";
    String date_created "1970-04-27";
    String defaultGraphQuery "longitude,latitude,sea_surface_temp&time>=now-1day&time<=now";
    Float64 Easternmost_Easting -46.32;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 74.62;
    Float64 geospatial_lat_min 7.41;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -46.32;
    Float64 geospatial_lon_min -145.0;
    String geospatial_lon_units "degrees_east";
    String history 
"2022-12-05T23:55:03Z (source database)
2022-12-05T23:55:03Z http://CanWINerddap.ad.umanitoba.ca/erddap/tabledap/DFO_MEDS_BUOYS.html";
    String infoUrl "http://www.meds-sdmm.dfo-mpo.gc.ca/isdm-gdsi/waves-vagues/formats-eng.html#CSV";
    String institution "DFO MEDS";
    String keywords "atmosphere, atmospheric, atms, atms2, data, date, dryt, earth, Earth Science > Atmosphere > Atmospheric Winds > Surface Winds, flag, gspd, gspd2, latitude, local, longitude, Q_FLAG, science, seaState, seaSurfaceHeight, seaSurfaceTemperature, source, speed, sstp, stn, STN_ID, subSurfaceTemperature, surface, time, vcar, vcmx, vtp, vtpk, vwh, water temperature, water_depth, waves, wdir, wdir2, wind, wind_speed, winds, WSPD, wss";
    String keywords_vocabulary "GCMD Science Keywords";
    String language "eng";
    String license "Open Government Licence - Canada  https://open.canada.ca/en/open-government-licence-canada";
    Float64 Northernmost_Northing 74.62;
    String platform "moored surface buoy";
    String platform_vocabulary "https://vocab.nerc.ac.uk/collection/L06/current/";
    String publisher_email "service@meds-sdmm.dfo-mpo.gc.ca";
    String publisher_institution "DFO MEDS";
    String publisher_name "DFO MEDS";
    String publisher_url "meds-sdmm.dfo-mpo.gc.ca";
    String sourceUrl "(source database)";
    Float64 Southernmost_Northing 7.41;
    String standard_name_vocabulary "CF Standard Name Table v79";
    String subsetVariables "STN_ID, Q_FLAG, latitude, longitude";
    String summary "Wave data from buoys and models, and unofficial Meteorological Service of Canada (MSC) observations.  Sea surface temperature data have undergone additional automated quality control using the algorithm linked below. Historical data are merged with real-time acquisition. Recent data are subject to revision.";
    String title "Realtime data from Environment and Climate Change Canada buoys";
    Float64 Westernmost_Easting -145.0;
  }
}

 

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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