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Dataset Title:	First Continuous Aerosol Measurements at Testa Grigia at 3480 m asl: Aerosol Populations and Transport Dynamics in the Southern European Alps
Institution:	Institute of Polar Sciences (Dataset ID: 36301cd5-8094-4a44-87d0-f5f7321cbe4b)
Range:	longitude = 7.708 to 7.708°E, latitude = 45.934 to 45.934°N, time = 2021-09-16T08:00:00Z to 2023-05-16T05:00:00Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Data Access Form \| Files

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.6317792e+9, 1.6842132e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Date and time in UTC";
    String source_name "date";
    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";
  }
  d0_253 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.00398305084745763, 189.100710526316;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 0.253 and 0.298 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d0_298 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0011864406779661, 78.996947368421;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 0.298 and 0.352 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d0_352 {
    Float64 _FillValue NaN;
    Float64 actual_range 3.38983050847458e-4, 46.4482222222222;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 0.352 and 0.414 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d0_414 {
    Float64 _FillValue NaN;
    Float64 actual_range 2.54237288135593e-4, 18.8795217391304;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 0.414 and 0.488 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d0_488 {
    Float64 _FillValue NaN;
    Float64 actual_range 1.66666666666667e-4, 13.7943095238095;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 0.488 and 0.576 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d0_576 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 10.8551904761905;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 0.576 and 0.679 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d0_679 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 6.94438095238095;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 0.679 and 0.800 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d0_800 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 4.6572380952381;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 0.800 and 0.943 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d0_943 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 3.55935714285714;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 0.493 and 1.112 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d1_112 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 2.8302619047619;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 1.112 and 1.310 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d1_310 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 2.69819047619048;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 1.310 and 1.545 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d1_545 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 2.41533333333333;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 1.545 and 1.821 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d1_821 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 2.32352380952381;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 1.821 and 2.146 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d2_146 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 2.11454761904762;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 2.146 and 2.530 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d2_530 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 1.68614285714286;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 2.530 and 2.892 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d2_982 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 1.11992857142857;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 2.982 and 3.515 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d3_515 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 0.88447619047619;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 3.515 and 4.144 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d4_144 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 0.571261904761905;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 4.144 and 4.884 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d4_884 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 0.352595238095238;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 4.884 and 5.757 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d5_757 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 0.219214285714286;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 5.757 and 6.787 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d6_787 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 0.199526315789474;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 6.787 and 8.000 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d8_000 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 0.150526315789474;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 8.000 and 9.430 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  d9_430 {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 0.282447368421053;
    String long_name "number size distribution of aerosol particles at stp in air with optical diameter between 9.430 and 11.120 micrometers";
    String standard_name "number_size_distribution_of_aerosol_particles_at_stp_in_air";
    String units "cm-3";
  }
  Babs340 {
    Float64 _FillValue NaN;
    Float64 actual_range -0.469317790243594, 18.964922149546;
    String long_name "Aerosol absorption coefficient at 340 nanometers";
    String standard_name "aerosol_absorption_coefficient";
    String units "Mm-1";
  }
  Babs470 {
    Float64 _FillValue NaN;
    Float64 actual_range -0.201605635958102, 15.1914281579995;
    String long_name "Aerosol absorption coefficient at 470 nanometers";
    String standard_name "aerosol_absorption_coefficient";
    String units "Mm-1";
  }
  Babs520 {
    Float64 _FillValue NaN;
    Float64 actual_range -0.207518722386597, 13.1729524907448;
    String long_name "Aerosol absorption coefficient at 520 nanometers";
    String standard_name "aerosol_absorption_coefficient";
    String units "Mm-1";
  }
  Babs590 {
    Float64 _FillValue NaN;
    Float64 actual_range -0.188748167873015, 10.9419361808666;
    String long_name "Aerosol absorption coefficient at 590 nanometers";
    String standard_name "aerosol_absorption_coefficient";
    String units "Mm-1";
  }
  Babs660 {
    Float64 _FillValue NaN;
    Float64 actual_range -0.193365898313233, 9.60617723264779;
    String long_name "Aerosol absorption coefficient at 660 nanometers";
    String standard_name "aerosol_absorption_coefficient";
    String units "Mm-1";
  }
  Babs880 {
    Float64 _FillValue NaN;
    Float64 actual_range -0.212444550581583, 7.21999320832338;
    String long_name "Aerosol absorption coefficient at 880 nanometers";
    String standard_name "aerosol_absorption_coefficient";
    String units "Mm-1";
  }
  Babs950 {
    Float64 _FillValue NaN;
    Float64 actual_range -0.211907657506942, 6.78626826774491;
    String long_name "Aerosol absorption coefficient at 950 nanometers";
    String standard_name "aerosol_absorption_coefficient";
    String units "Mm-1";
  }
  station_id {
    String actual_range 
"Testa_Grigia
Testa_Grigia";
    String cf_role "timeseries_id";
    String long_name "Id of the station in the TimeSeries";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 45.934, 45.934;
    String axis "Y";
    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 7.708, 7.708;
    String axis "X";
    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 "stefania.gilardoni@cnr.it";
    String contributor_institution "Institute of Polar Sciences";
    String contributor_name "Stefania Gilardoni";
    String Conventions "COARDS, CF-1.10, ACDD-1.3";
    String creator_email "stefania.gilardoni@cnr.it";
    String creator_name "Stefania Gilardoni";
    String creator_url "https://editor.copernicus.org/EGUsphere/ms_records/egusphere-2026-1299";
    Float64 Easternmost_Easting 7.708;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 45.934;
    Float64 geospatial_lat_min 45.934;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 7.708;
    Float64 geospatial_lon_min 7.708;
    String geospatial_lon_units "degrees_east";
    String history 
"2026-03-23T08:00:00 publication v0
2026-04-20T05:50:02Z (local files)
2026-04-20T05:50:02Z https://bo.isp.cnr.it/tabledap/36301cd5-8094-4a44-87d0-f5f7321cbe4b.das";
    String infoUrl "https://testagrigia.cnr.it/";
    String institution "Institute of Polar Sciences";
    String keywords "absorption coefficient, aerosol, particle number size distribution";
    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 45.934;
    String publisher_name "Institute of Polar Sciences (ISP-CNR)";
    String publisher_type "group";
    String publisher_url "https://www.isp.cnr.it";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 45.934;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "Dataset of aerosol microphysical properties measured at Testa Grigia Observatory from September 2021 to May 2023 . The dataset includes number of particles in 31 bins with the following lower cut-off (in micrometers): 0.253,0.298,0.352,0.414,0.488,0.576,0.679,0.8,0.943,1.112,1.31,1.545,1.821,2.146,2.53,2.982,3.515,4.144, 4.884,5.757,6.787,8.00,9.43,11.12,13.1,15.45,18.21,21.46,25.3,29.82,35.15; Aerosol absorption coefficient measured at the following 7 wavelengths (in nanometers): 470, 520,590,660,880,950; Aerosol concentration from CAMS ensemble model: PM10, PM2.5, PM_dust.";
    String time_coverage_end "2023-05-16T05:00:00Z";
    String time_coverage_start "2021-09-16T08:00:00Z";
    String title "First Continuous Aerosol Measurements at Testa Grigia at 3480 m asl: Aerosol Populations and Transport Dynamics in the Southern European Alps";
    Float64 Westernmost_Easting 7.708;
  }
}

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.