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Dataset Title:	THAAO Upward Longwave Irradiance data
Institution:	Italian National Agency for New Technologies, Energy and Sustainable Economic Development, National Institute of Geophysics and Volcanology (Dataset ID: THAAO_ULI_MACMAP)
Range:	longitude = -68.8 to -68.8°E, latitude = 76.5 to 76.5°N, time = 2020-10-01T00:00:00Z to 2023-10-01T23:00:00Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form

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Things You Can Do With Your Graphs

Well, you can do anything you want with your graphs, of course. But some things you might not have considered are:

Web page authors can embed a graph of the latest data in a web page using HTML <img> tags.
Anyone can use ERDDAPs Slide Sorter to build a personal web page that displays graphs with the latest data (or other images or HTML content), each in its own, draggable slide.

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  ULI_STD {
    Float32 _FillValue -999.0;
    Float32 actual_range 0.104, 19.199;
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String long_name "Standard deviation of the hourly average";
    String sdn_parameter_urn "SDN:P07::";
    String sdn_uom_name "Watts per square metre";
    String sdn_uom_uri "https://vocab.nerc.ac.uk/collection/P06/current/UFAA/";
    String sdn_uom_urn "SDN:P06::UFAA";
    String units "W m-2";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -68.8, -68.8;
    String ancillary_variables "POSITION_QC";
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "longitude of measurements";
    String sdn_P02_urn "SDN:P02::ALAT";
    String sdn_parameter_name "Longitude east";
    String sdn_parameter_uri "https://vocab.nerc.ac.uk/collection/P01/current/ALONZZ01/";
    String sdn_parameter_urn "SDN:P01::ALONZZ01";
    String sdn_uom_name "Degrees east";
    String sdn_uom_uri "https://vocab.nerc.ac.uk/collection/P06/current/DEGE/";
    String sdn_uom_urn "SDN:P06::DEGE";
    String standard_name "longitude";
    String units "degrees_east";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.6015104e+9, 1.6962012e+9;
    String ancillary_variables "TIME_QC";
    String axis "T";
    String calendar "proleptic_gregorian";
    String cf_role "timeseries_id";
    String ioos_category "Time";
    String long_name "time of measurements";
    String sdn_P02_urn "SDN:P02::AYMD";
    String sdn_parameter_name "Elapsed time relative to 1970-01-01T00:00:00Z";
    String sdn_parameter_uri "https://vocab.nerc.ac.uk/collection/P01/current/ELTMEP01/";
    String sdn_parameter_urn "SDN:P01::ELTMEP01";
    String sdn_uom_name "Seconds";
    String sdn_uom_uri "https://vocab.nerc.ac.uk/collection/P06/current/UTBB/";
    String sdn_uom_urn "SDN:P06::UTBB";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 76.5, 76.5;
    String ancillary_variables "POSITION_QC";
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "latitude of measurements";
    String sdn_P02_urn "SDN:P02::ALAT";
    String sdn_parameter_name "Latitude north";
    String sdn_parameter_uri "https://vocab.nerc.ac.uk/collection/P01/current/ALATZZ01/";
    String sdn_parameter_urn "SDN:P01::ALATZZ01";
    String sdn_uom_name "Degrees north";
    String sdn_uom_uri "https://vocab.nerc.ac.uk/collection/P06/current/DEGN/";
    String sdn_uom_urn "SDN:P06::DEGN";
    String standard_name "latitude";
    String units "degrees_north";
  }
  ULI_AVG {
    Float32 _FillValue -999.0;
    Float32 actual_range 169.192, 428.162;
    String ancillary_variables "UIL_STD";
    Float64 colorBarMaximum 500.0;
    Float64 colorBarMinimum -500.0;
    String long_name "Surface Upwelling Longwave Radiation";
    String sdn_parameter_name "surface_upwelling_longwave_flux_in_air";
    String sdn_parameter_uri "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0235/";
    String sdn_parameter_urn "SDN:P07::CFSN0235";
    String sdn_uom_name "Watts per square metre";
    String sdn_uom_uri "https://vocab.nerc.ac.uk/collection/P06/current/UFAA/";
    String sdn_uom_urn "SDN:P06::UFAA";
    String standard_name "surface_upwelling_longwave_flux_in_air";
    String units "W m-2";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "latitude,longitude,time";
    String citation "Meloni D. , Di Sarra A., Di Iorio T., Pace G., Muscari G., Iaccarino A., Cali Quaglia F. (2021). Upward Longwave Irradiance at the Thule High Arctic Atmospheric Observatory during MACMAP (THAAO_ULI_MACMAP) [Data set]. Agenzia Nazionale per le nuove tecnologie, l energia e lo sviluppo economico sostenibile (ENEA). https://doi.org/10.13127/thaao/uli_macmap";
    String contributor_name "Daniela Meloni, Alcide Di Sarra, Tatiana Di Iorio, Giandomenico Pace, Giovanni Muscari, Antonio Iaccarino, Filippo Cali Quaglia";
    String contributor_url "0000-0002-2171-1296, 0000-0002-2405-2898, 0000-0001-8872-8917, 0000-0002-3208-6756, 0000-0001-6326-2612, 0000-0002-5010-4807, 0000-0001-5557-1626";
    String Conventions "CF-1.60, COARDS, SeaDataNet_1.0, ACDD-1.3";
    String creator_name "Istituto Nazionale Geofisica e Vulcanologia - Sede di Bologna";
    String creator_url "www.bo.ingv.it";
    String data_mode "R";
    String doi "10.13127/thaao/uli_macmap";
    Float64 Easternmost_Easting -68.8;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 76.5;
    Float64 geospatial_lat_min 76.5;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -68.8;
    Float64 geospatial_lon_min -68.8;
    String geospatial_lon_units "degrees_east";
    String geospatial_vertical_units "m";
    String history 
"2025-10-02T10:24:08Z (local files)
2025-10-02T10:24:08Z http://oceano.bo.ingv.it/tabledap/THAAO_ULI_MACMAP.das";
    String info_url "https://www.thuleatmos-it.it/dataaccess/ULI_MACMAP/";
    String infoUrl "https://data.ingv.it/dataset/484#additional-metadata";
    String institution "Italian National Agency for New Technologies, Energy and Sustainable Economic Development, National Institute of Geophysics and Volcanology";
    String institution_edmo_code "135, 3917";
    String institution_edmo_uri "https://edmo.seadatanet.org/report/135, https://edmo.seadatanet.org/report/3917";
    String institution_ror_uri "https://ror.org/02an8es95,  https://ror.org/00qps9a02";
    String keywords "agency, air, atmosphere, atmospheric, average, data, development, deviation, earth, Earth Science > Atmosphere > Atmospheric Radiation > Longwave Radiation, Earth Science > Atmosphere > Atmospheric Radiation > Longwave Radiation > Upwelling Longwave Radiation, economic, energy, flux, geophysics, hour, hourly, institute, irradiance, italian, latitude, longitude, longwave, MACMAP, national, new, radiation, science, standard, surface, surface_upwelling_longwave_flux_in_air, sustainable, technologies, thaao, time, ULI_AVG, ULI_STD, upward, upwelling, volcanology";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "CC-BY-4.0";
    String license_uri "https://spdx.org/licenses/CC-BY-4.0.json";
    String netcdf_version "netCDF-4 classic model";
    Float64 Northernmost_Northing 76.5;
    String principal_investigator "Daniela Meloni";
    String principal_investigator_email "daniela.meloni at enea.it";
    String project "PRA2019-0009 - ECAPAC - Effects of changing albedo and precipitation on the Arctic climate, PNRA 18/00122 - C - CLARA2, Nubi e radiazione in Artide ed in Antartide, PNRA 14/00016 - Linea B_OASIS-YOPP: Osservazioni della Stratosfera Artica a sostegno di YOPP, Collaborazione Base THULE, Dipartimentale INGV MACMAP, PNRA 2013/C3.03 - SVAAP - Studio del Vapor Acqueo nell'Atmosfera Polare in ambito NDACC-SVAAP, PNRA 2009/A3.04 - Osservazioni dei cambiamenti chimici e fisici nelle atmosfere polari delle stazioni NDACC";
    String references "https://data.ingv.it/dataset/484#additional-metadata";
    String source "Observational type: Kipp&Zonen CMP21 pyranometer and CGR4 pyrgeometer";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 76.5;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "longitude, latitude";
    String summary "Upward Longwave Irradiance at the Thule High Arctic Atmospheric Observatory during MACMAP project.";
    String time_coverage_end "2023-10-01T23:00:00Z";
    String time_coverage_start "2020-10-01T00:00:00Z";
    String title "THAAO Upward Longwave Irradiance data";
    Float64 Westernmost_Easting -68.8;
  }
}

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.

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