Data Access Form

Dataset Title:	CH4 and CO2 turbulent flux at Ny Alesund (cct output p5ys9m)
Institution:	CNR (Dataset ID: cnr_iadc_0b93_a452_852a)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Make a graph

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Variable

Optional
Constraint #1

Optional
Constraint #2

Minimum

or a List of Values

Maximum

time (UTC)

H (Sensible Heat Flux, W m-2)

LE (Latent Heat Flux, W m-2)

co2_flux (µmol s-1 m-2)

ch4_flux (µmol s-1 m-2)

co2_mixing_ratio (µmol s-1 m-2)

ch4_mixing_ratio (µmol s-1 m-2)

sonic_temperature (K)

air_temperature (degree_C)

air_pressure (Pa)

RH (percent)

wind_speed (m s-1)

wind_dir (Wind From Direction, degree)

ustar (Friction Velocity, m s-1)

TKE (Turbulent Kinetic Energy, m s-2)

L (Monin Obokhov Length, m)

stability_index (1)

TG1 (Soil Temperature 5 cm, degree_C)

TG2 (degree_C)

snow_h_m (Snow Depth, m)

co2_flux_mass (gC m-2 s-1)

ch4_flux_mass (gC m-2 s-1)

co2_mass_ex (CO2 Exchange Mass, gC m-2)

ch4_mass_ex (CH4 Exchange Mass, gC m-2)

ustar_f (m s-1)

LE_f (W m-2)

H_f (W m-2)

co2_flux_RF (µmol s-1 m-2)

ch4_flux_RF (µmol s-1 m-2)

co2_flux_MDS_mass (µmol s-1 m-2)

co2_MDS_mass_ex (µmol m-2)

co2_flux_RF_mass (µmol s-1 m-2)

ch4_flux_RF_mass (µmol s-1 m-2)

co2_RF_mass_ex (µmol m-2)

ch4_RF_mass_ex (µmol m-2)

station_id

latitude (degrees_north)

longitude (degrees_east)

Server-side Functions

distinct()

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File type: (more information)

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.617984e+9, 1.680309e+9;
    String axis "T";
    Float64 colorBarMaximum 1.7e+9;
    Float64 colorBarMinimum 1.6e+9;
    String ioos_category "Time";
    String long_name "Time";
    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";
  }
  H {
    Int32 _FillValue 2147483647;
    Int32 actual_range -99, 81;
    Float64 colorBarMaximum 250.0;
    Float64 colorBarMinimum -250.0;
    String ioos_category "Heat Flux";
    String long_name "Sensible Heat Flux";
    String standard_name "h";
    String units "W m-2";
  }
  LE {
    Int32 _FillValue 2147483647;
    Int32 actual_range -6, 59;
    Float64 colorBarMaximum 250.0;
    Float64 colorBarMinimum -250.0;
    String ioos_category "Heat Flux";
    String long_name "Latent Heat Flux";
    String standard_name "le";
    String units "W m-2";
  }
  co2_flux {
    Int32 _FillValue 2147483647;
    Int32 actual_range -3, 1;
    Float64 colorBarMaximum 2.0;
    Float64 colorBarMinimum -4.0;
    String ioos_category "CO2";
    String long_name "CO2 Flux";
    String standard_name "co2_flux";
    String units "µmol s-1 m-2";
  }
  ch4_flux {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 0;
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum -1.0;
    String ioos_category "Unknown";
    String long_name "CH4 Flux";
    String standard_name "ch4_flux";
    String units "µmol s-1 m-2";
  }
  co2_mixing_ratio {
    Float32 _FillValue NaN;
    Float32 actual_range 394.502, 436.297;
    Float64 colorBarMaximum 440.0;
    Float64 colorBarMinimum 390.0;
    String ioos_category "CO2";
    String long_name "CO2 Mixing Ratio";
    String standard_name "co2_mixing_ration";
    String units "µmol s-1 m-2";
  }
  ch4_mixing_ratio {
    Float32 _FillValue NaN;
    Float32 actual_range 1.95178, 2.26007;
    Float64 colorBarMaximum 2.3000000000000003;
    Float64 colorBarMinimum 1.9000000000000001;
    String ioos_category "Unknown";
    String long_name "CH4 Mixing Ratio";
    String standard_name "ch4_mixing_ratio";
    String units "µmol s-1 m-2";
  }
  sonic_temperature {
    Int32 _FillValue 2147483647;
    Int32 actual_range 251, 290;
    Float64 colorBarMaximum 313.0;
    Float64 colorBarMinimum 263.0;
    String ioos_category "Temperature";
    String long_name "Sonic Temperature";
    String standard_name "sonic_temperature";
    String units "K";
  }
  air_temperature {
    Int32 _FillValue 2147483647;
    Int32 actual_range -21, 17;
    String colorBarMaximum "40.0";
    String colorBarMinimum "-10.0";
    String ioos_category "Temperature";
    String long_name "Air Temperature";
    String standard_name "air_temperature";
    String units "degree_C";
  }
  air_pressure {
    Int32 _FillValue 2147483647;
    Int32 actual_range 95206, 102834;
    String colorBarMaximum "1050.0";
    String colorBarMinimum "950.0";
    String ioos_category "Pressure";
    String long_name "Air Pressure";
    String standard_name "air_pressure";
    String units "Pa";
  }
  RH {
    Float32 _FillValue NaN;
    Float32 actual_range 19.2637, 99.0226;
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Meteorology";
    String long_name "RH";
    String standard_name "relative_humidity";
    String units "percent";
  }
  wind_speed {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 21;
    String colorBarMaximum "15.0";
    String colorBarMinimum "0.0";
    String ioos_category "Wind";
    String long_name "Wind Speed";
    String standard_name "wind_speed";
    String units "m s-1";
  }
  wind_dir {
    Int32 _FillValue 2147483647;
    Int32 actual_range 10, 259;
    String colorBarMaximum "360.0";
    String colorBarMinimum "0.0";
    String ioos_category "Wind";
    String long_name "Wind From Direction";
    String standard_name "wind_from_direction";
    String units "degree";
  }
  ustar {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 1;
    Float64 colorBarMaximum 1.5;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Currents";
    String long_name "Friction Velocity";
    String standard_name "ustar";
    String units "m s-1";
  }
  TKE {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 17;
    Float64 colorBarMaximum 20.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Unknown";
    String long_name "Turbulent Kinetic Energy";
    String standard_name "tke";
    String units "m s-2";
  }
  L {
    Int32 _FillValue 2147483647;
    Int32 actual_range -385153, 1013900;
    Float64 colorBarMaximum 1500000.0;
    Float64 colorBarMinimum -500000.0;
    String ioos_category "Unknown";
    String long_name "Monin Obokhov Length";
    String standard_name "l";
    String units "m";
  }
  stability_index {
    Float32 _FillValue NaN;
    Float32 actual_range -346.934, 123.041;
    Float64 colorBarMaximum 200.0;
    Float64 colorBarMinimum -400.0;
    String ioos_category "Unknown";
    String long_name "Stability Index";
    String standard_name "(z-d)/l";
    String units "1";
  }
  TG1 {
    Int32 _FillValue 2147483647;
    Int32 actual_range -17, 12;
    Float64 colorBarMaximum 40.0;
    Float64 colorBarMinimum -10.0;
    String ioos_category "Temperature";
    String long_name "Soil Temperature 5 cm";
    String standard_name "soil_temperature";
    String units "degree_C";
  }
  TG2 {
    Int32 _FillValue 2147483647;
    Int32 actual_range -16, 11;
    Float64 colorBarMaximum 40.0;
    Float64 colorBarMinimum -10.0;
    String ioos_category "Temperature";
    String long_name "Soil Temperature 10 cm";
    String standard_name "soil_temperature";
    String units "degree_C";
  }
  snow_h_m {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 0;
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum -1.0;
    String ioos_category "Ice Distribution";
    String long_name "Snow Depth";
    String standard_name "snow_h";
    String units "m";
  }
  co2_flux_mass {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 0;
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum -1.0;
    String ioos_category "CO2";
    String long_name "CO2 Flux Mass";
    String standard_name "co2_flux_mass";
    String units "gC m-2 s-1";
  }
  ch4_flux_mass {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 0;
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum -1.0;
    String ioos_category "Unknown";
    String long_name "CH4 Flux Mass";
    String standard_name "ch4_flux_mass";
    String units "gC m-2 s-1";
  }
  co2_mass_ex {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 0;
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum -1.0;
    String ioos_category "CO2";
    String long_name "CO2 Exchange Mass";
    String standard_name "co2_mass_dep";
    String units "gC m-2";
  }
  ch4_mass_ex {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 0;
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum -1.0;
    String ioos_category "Unknown";
    String long_name "CH4 Exchange Mass";
    String standard_name "ch4_mass_dep";
    String units "gC m-2";
  }
  ustar_f {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 1;
    Float64 colorBarMaximum 1.5;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Currents";
    String long_name "Friction Velocity gap filled";
    String standard_name "ustar_f";
    String units "m s-1";
  }
  LE_f {
    Float32 _FillValue NaN;
    Float32 actual_range -6.5032, 59.68;
    Float64 colorBarMaximum 250.0;
    Float64 colorBarMinimum -250.0;
    String ioos_category "Heat Flux";
    String long_name "Latent Heat Flux gap filled";
    String standard_name "le_f";
    String units "W m-2";
  }
  H_f {
    Float32 _FillValue NaN;
    Float32 actual_range -99.033, 81.76;
    Float64 colorBarMaximum 250.0;
    Float64 colorBarMinimum -250.0;
    String ioos_category "Heat Flux";
    String long_name "Sensible Heat Flux gap filled";
    String standard_name "h_f";
    String units "W m-2";
  }
  co2_flux_RF {
    Int32 _FillValue 2147483647;
    Int32 actual_range -3, 1;
    Float64 colorBarMaximum 2.0;
    Float64 colorBarMinimum -4.0;
    String ioos_category "CO2";
    String long_name "CO2 Flux gap filled Random Forest";
    String standard_name "co2_flux_rf";
    String units "µmol s-1 m-2";
  }
  ch4_flux_RF {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 0;
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum -1.0;
    String ioos_category "Unknown";
    String long_name "CH4 Flux gap filled Random Forest";
    String standard_name "ch4_flux_rf";
    String units "µmol s-1 m-2";
  }
  co2_flux_MDS_mass {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 0;
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum -1.0;
    String ioos_category "CO2";
    String long_name "CO2 Flux Mass gap filled MDS";
    String standard_name "co2_flux_mds_mass";
    String units "µmol s-1 m-2";
  }
  co2_MDS_mass_ex {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 0;
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum -1.0;
    String ioos_category "CO2";
    String long_name "CO2 Exchange Mass gap filled MDS";
    String standard_name "co2_mds_mass_ex";
    String units "µmol m-2";
  }
  co2_flux_RF_mass {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 0;
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum -1.0;
    String ioos_category "CO2";
    String long_name "CO2 Flux Mass gap filled RF";
    String standard_name "co2_flux_rf_mass";
    String units "µmol s-1 m-2";
  }
  ch4_flux_RF_mass {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 0;
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum -1.0;
    String ioos_category "Unknown";
    String long_name "CH4 Flux  Mass pag filled RF";
    String standard_name "ch4_flux_rf_mass";
    String units "µmol s-1 m-2";
  }
  co2_RF_mass_ex {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 0;
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum -1.0;
    String ioos_category "CO2";
    String long_name "CO2 Exchange Mass gap filled RF";
    String standard_name "co2_rf_mass_ex";
    String units "µmol m-2";
  }
  ch4_RF_mass_ex {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 0;
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum -1.0;
    String ioos_category "Unknown";
    String long_name "CH4 Exchange Mass gap filled RF";
    String standard_name "ch4_rf_mass_ex";
    String units "µmol m-2";
  }
  station_id {
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
    String long_name "Id of the station in the TimeSeries";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 78.92136, 78.92136;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "latitude position of the station";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range 11.86587, 11.86587;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "longitude position of the station";
    String standard_name "longitude";
    String units "degrees_east";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "station_id,latitude,longitude";
    String contributor_email "a.donateo@isac.cnr.it";
    String contributor_institution "CNR-ISAC";
    String contributor_name "antonio donateo";
    String Conventions "COARDS, CF-1.10, ACDD-1.3";
    String creator_email "a.donateo@isac.cnr.it";
    String creator_name "CNR";
    String creator_type "institution";
    String creator_url "https://metadata.iadc.cnr.it/geonetwork/srv/api/records/a4848f34-1063-4ee0-b0ed-b358ca30a651";
    Float64 Easternmost_Easting 11.86587;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 78.92136;
    Float64 geospatial_lat_min 78.92136;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 11.86587;
    Float64 geospatial_lon_min 11.86587;
    String geospatial_lon_units "degrees_east";
    String history 
"The dataset runs from April 9, 2021 to March 31, 2023 (30 min resolution).
2026-05-29T15:42:24Z (local files)
2026-05-29T15:42:24Z https://data.iadc.cnr.it/erddap/tabledap/cct_output_p5ys9m.das
2026-05-29T15:43:09Z https://data.iadc.cnr.it/erddap/tabledap/cct_output_p5ys9m
2026-05-29T15:43:09Z https://erddap.s4polarin.eu/erddap-cnr/erddap/tabledap/cnr_iadc_0b93_a452_852a.html";
    String infoUrl "https://metadata.iadc.cnr.it/geonetwork/srv/api/records/a4848f34-1063-4ee0-b0ed-b358ca30a651";
    String institution "CNR";
    String keywords "(z-d)/l, agriculture, air, air_pressure, air_temperature, alesund, atmosphere, atmospheric, carbon, carbon dioxide, cct, ch4, ch4_flux, ch4_flux_mass, ch4_flux_rf, ch4_flux_rf_mass, ch4_mass_dep, ch4_mass_ex, ch4_mixing_ratio, ch4_rf_mass_ex, cnr, co2, co2_flux, co2_flux_mass, co2_flux_mds_mass, co2_flux_rf, co2_flux_rf_mass, co2_mass_dep, co2_mass_ex, co2_mds_mass_ex, co2_mixing_ratio, co2_mixing_ration, co2_rf_mass_ex, council, currents, data, dep, depth, dioxide, direction, distribution, earth, Earth Science > Agriculture > Soils > Soil Temperature, Earth Science > Atmosphere > Atmospheric Pressure > Atmospheric Pressure Measurements, Earth Science > Atmosphere > Atmospheric Pressure > Sea Level Pressure, Earth Science > Atmosphere > Atmospheric Pressure > Static Pressure, Earth Science > Atmosphere > Atmospheric Temperature > Air Temperature, Earth Science > Atmosphere > Atmospheric Temperature > Surface Air Temperature, Earth Science > Atmosphere > Atmospheric Water Vapor > Humidity, Earth Science > Atmosphere > Atmospheric Winds > Surface Winds, Earth Science > Land Surface > Soils > Soil Temperature, energy, exchange, filled, flux, forest, friction, gap, h_f, heat, heat flux, humidity, ice, ice distribution, identifier, index, institute, italian, kinetic, land, latent, latitude, le_f, length, level, longitude, mass, mds, measurements, meteorology, mixing, monin, national, obokhov, output, p5ys9m, pag, polar, position, pressure, random, ratio, ration, relative, relative_humidity, research, science, sciences, sea, seawater, sensible, snow, snow_h, snow_h_m, soil, soil_temperature, soils, sonic, sonic_temperature, speed, stability, stability_index, static, station, station_id, surface, temperature, tg1, tg2, time, timeseries, tke, turbulent, ustar, ustar_f, vapor, velocity, water, wind, wind_dir, wind_from_direction, wind_speed, winds, z-d";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "CC BY-NC: This license allows reusers to distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, and only so long as attribution is given to the creator.";
    Float64 Northernmost_Northing 78.92136;
    String publisher_email "a.donateo@isac.cnr.it";
    String publisher_institution "CNR-ISAC";
    String publisher_name "antonio donateo";
    String sourceUrl "https://data.iadc.cnr.it/erddap/tabledap/cct_output_p5ys9m";
    Float64 Southernmost_Northing 78.92136;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "time, H, LE, co2_flux, ch4_flux, co2_mixing_ratio, ch4_mixing_ratio, sonic_temperature, air_temperature, air_pressure, RH, wind_speed, wind_dir, ustar, TKE, L, stability_index, TG1, TG2, snow_h_m, co2_flux_mass, ch4_flux_mass, co2_mass_ex, ch4_mass_ex, ustar_f, LE_f, H_f, co2_flux_RF, ch4_flux_RF, co2_flux_MDS_mass, co2_MDS_mass_ex, co2_flux_RF_mass, ch4_flux_RF_mass, co2_RF_mass_ex, ch4_RF_mass_ex, station_id, latitude, longitude";
    String summary "Measurement of the concentration and turbulent flux of CO2 and CH4 at 15 m above sea level on the CCT.";
    String time_coverage_end "2023-04-01T00:30:00Z";
    String time_coverage_start "2021-04-09T16:00:00Z";
    String title "CH4 and CO2 turbulent flux at Ny Alesund (cct output p5ys9m)";
    Float64 Westernmost_Easting 11.86587;
  }
}

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.