Data Access Form

Dataset Title:	SPN1 radiometric measurements @Concordia
Institution:	Institute of Polar Sciences (Dataset ID: b939ec66-5f37-4e16-a669-92c8aaafd81a)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Files \| Make a graph

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Variable	Minimum	Maximum
longitude (degrees_east)	-123.332	-123.332

latitude (degrees_north)	-75.0998	-75.0998

station	"domeC"	"domeC"
time (UTC)	2016-11-30T00:00:00Z	2025-12-31T23:59:00Z

SWD (watt m-2)	0.0	1208.028
DIF (watt m-2)	0.0	763.776

Server-side Functions

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File type: (more information)

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -123.332, -123.332;
    String axis "X";
    String colorBarMaximum "180.0";
    String colorBarMinimum "-180.0";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range -75.0998, -75.0998;
    String axis "Y";
    String colorBarMaximum "90.0";
    String colorBarMinimum "-90.0";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  station {
    String cf_role "timeseries_id";
    String long_name "Station";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.480464e+9, 1.76722554e+9;
    String axis "T";
    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";
  }
  SWD {
    Float32 actual_range 0.0, 1208.028;
    String long_name "ShortWave Downwelling Solar Radiation";
    String standard_name "downwelling_shortwave_flux_in_air";
    String units "watt m-2";
  }
  DIF {
    Float32 actual_range 0.0, 763.776;
    String long_name "Diffuse Solar Radiation";
    String standard_name "diffuse_downwelling_shortwave_flux_in_air";
    String units "watt m-2";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "station,latitude,longitude";
    String contributor_email "angelo.lupi@cnr.it, maurizio.busetto@cnr.it";
    String contributor_institution "Institute of Polar Sciences";
    String contributor_name "angelo lupi, maurizio busetto";
    String Conventions "COARDS, CF-1.10, ACDD-1.3";
    String creator_email "angelo.lupi@cnr.it";
    String creator_name "Angelo Lupi";
    Float64 Easternmost_Easting -123.332;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max -75.0998;
    Float64 geospatial_lat_min -75.0998;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -123.332;
    Float64 geospatial_lon_min -123.332;
    String geospatial_lon_units "degrees_east";
    String history 
"yearly data:2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
2026-03-23T17:16:35Z (local files)
2026-03-23T17:16:35Z https://antarcticdatacenter.cnr.it/erddap/tabledap/b939ec66-5f37-4e16-a669-92c8aaafd81a.html";
    String infoUrl "http://www.isp.cnr.it";
    String institution "Institute of Polar Sciences";
    String keywords "data, dataset, dif, institute, latitude, longitude, polar, radiometric, sciences, spn1, station, swd, time";
    String license 
"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, ERD, NOAA, 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.";
    Float64 Northernmost_Northing -75.0998;
    String publisher_name "National Antarctic Data Center of Italy";
    String publisher_type "group";
    String publisher_url "https://iandc.pnra.aq";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -75.0998;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "SWD and DIF solar fluxes. Institute of Polar Sciences data from a local source.";
    String time_coverage_end "2025-12-31T23:59:00Z";
    String time_coverage_start "2016-11-30T00:00:00Z";
    String title "SPN1 radiometric measurements @Concordia";
    Float64 Westernmost_Easting -123.332;
  }
}

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.