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Dataset Title:	HR-TOF-AMS offline NR-PM1 concentrations, GVB, Ny-Alesund, May2019-Jun2020
Institution:	Italian National Research Council - Institute of Atmospheric Sciences and Climate (CNR-ISAC) (Dataset ID: hrtofams_offline_nrpm1_concentrations__gvb_nyalesund__may2019jun2020_1wgv01)
Range:	longitude = 11.8942 to 11.8942°E, latitude = 78.9177 to 78.9177°N, time = 2019-05-24T00:00:00Z to 2020-06-01T00:00:00Z
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 1.558656e+9, 1.5909696e+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";
  }
  AMS_Org {
    Float32 _FillValue NaN;
    Float32 actual_range 0.002919833, 1.28726;
    String long_name "water-soluble organics mass measured by HR-TOF-AMS";
    String standard_name "atmosphere_mass_content_of_particulate_water-soluble_organic_matter_dry_aerosol_particles";
    String units "��g m-3";
  }
  AMS_SO4 {
    Float32 _FillValue NaN;
    Float32 actual_range 0.01664812, 1.326498;
    String long_name "PM1 sulfate mass measured by HR-TOF-AMS";
    String standard_name "atmosphere_mass_content_of_sulfate_ambient_aerosol_particles";
    String units "��g m-3";
  }
  AMS_NO3 {
    Float32 _FillValue NaN;
    Float32 actual_range -3.91146e-4, 0.02683844;
    String colorBarMaximum "50.0";
    String colorBarMinimum "0.0";
    String long_name "PM1 nitrate mass measured by HR-TOF-AMS";
    String standard_name "atmosphere_mass_content_of_nitrate_dry_aerosol_particles";
    String units "��g m-3";
  }
  AMS_NH4 {
    Float32 _FillValue NaN;
    Float32 actual_range 0.008135655, 0.4999241;
    String colorBarMaximum "5.0";
    String colorBarMinimum "0.0";
    String long_name "PM1 ammonium mass measured by HR-TOF-AMS";
    String standard_name "atmosphere_mass_content_of_ammonium_dry_aerosol_particles";
    String units "��g m-3";
  }
  AMS_OM_OC {
    Float32 _FillValue NaN;
    Float32 actual_range 2.02236, 2.74653;
    String long_name "Organic Mass to Organic Carbon (OM:OC) elemental ratio by HR-TOF-AMS";
    String standard_name "atmosphere_elemental_ratio_organic_matter_to_organic_carbon_dry_aerosol_particles";
  }
  AMS_O_C {
    Float32 _FillValue NaN;
    Float32 actual_range 0.650099, 1.21425;
    String long_name "Organic Oxygen-to-Carbon (O:C) elemental ratio by HR-TOF-AMS";
    String standard_name "atmosphere_elemental_ratio_organic_oxygen_to_carbon_dry_aerosol_particles";
  }
  AMS_H_C {
    Float32 _FillValue NaN;
    Float32 actual_range 1.1875, 1.75266;
    String long_name "Organic Hydrogen-to-Carbon (H:C) elemental ratio by HR-TOF-AMS";
    String standard_name "atmosphere_elemental_ratio_organic_hydrogen_to_carbon_dry_aerosol_particles";
  }
  AMS_N_C {
    Float32 _FillValue NaN;
    Float32 actual_range 0.00517682, 0.028721;
    String long_name "Organic Nutrogen-to-Carbon (N:C) elemental ratio by HR-TOF-AMS";
    String standard_name "atmosphere_elemental_ratio_organic_nitrogen_to_carbon_dry_aerosol_particles";
  }
  AMS_S_C {
    Float32 _FillValue NaN;
    Float32 actual_range 6.46e-5, 0.0167962;
    String long_name "Organic Sulfur-to-Carbon (S:C) elemental ratio by HR-TOF-AMS";
    String standard_name "atmosphere_elemental_ratio_organic_sulfur_to_carbon_dry_aerosol_particles";
  }
  AMS_C2H3O {
    Float32 _FillValue NaN;
    Float32 actual_range 1.0743e-4, 0.1036549;
    String long_name "C2H3O mass fragment concentration (m/z 43.0184 by HR-TOF-AMS)";
    String standard_name "atmosphere_mass_concentration_of_frag_c2h3o_mz43";
    String units "��g m-3";
  }
  AMS_CO2 {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 0.2307545;
    String long_name "CO2 mass fragment concentration (m/z 43.9898 by HR-TOF-AMS)";
    String standard_name "atmosphere_mass_concentration_of_frag_co2_mz44";
    String units "��g m-3";
  }
  AMS_CHO {
    Float32 _FillValue NaN;
    Float32 actual_range 2.96796e-5, 0.04555357;
    String long_name "CHO mass fragment concentration (m/z 29.0027 by HR-TOF-AMS)";
    String standard_name "atmosphere_mass_concentration_of_frag_cho_mz29";
    String units "��g m-3";
  }
  AMS_C2H4O2 {
    Float32 _FillValue NaN;
    Float32 actual_range 8.25211e-6, 0.00416556;
    String long_name "C2H4O2 mass fragment concentration (m/z 60.0211 by HR-TOF-AMS)";
    String standard_name "atmosphere_mass_concentration_of_frag_c2h4o2_mz60";
    String units "��g m-3";
  }
  station_id {
    String actual_range 
"hrtofams_offline_nrpm1_concentrations__gvb_nyalesund__may2019jun2020_1wgv01
hrtofams_offline_nrpm1_concentrations__gvb_nyalesund__may2019jun2020_1wgv01";
    String cf_role "timeseries_id";
    String long_name "Gruvebadet";
    String standard_name "gruvebadet";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 78.9177, 78.9177;
    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 11.8942, 11.8942;
    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 "m.paglione@isac.cnr.it";
    String contributor_institution "Italian National Research Council - Institute of Atmospheric Sciences and Climate (CNR-ISAC)";
    String contributor_name "Marco Paglione";
    String Conventions "COARDS, CF-1.10, ACDD-1.3";
    String creator_email "m.paglione@isac.cnr.it";
    String creator_name "Marco Paglione";
    String creator_url "https://www.isac.cnr.it/en/users/marco-paglione";
    Float64 Easternmost_Easting 11.8942;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 78.9177;
    Float64 geospatial_lat_min 78.9177;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 11.8942;
    Float64 geospatial_lon_min 11.8942;
    String geospatial_lon_units "degrees_east";
    String history 
"2019-05-24T00:00:00Z to 2020-06-01T00:00:00Z Ambient aerosol particles with Dp<1 μm (PM1) were sampled by a High-Volume Sampler (TECORA eco-highvol equipped with digital PM1 sampling inlet, nominal flow 500 lpm) on pre-washed and pre-baked quartz-fiber filters (PALL, Ø= 18cm). Sampling time: 3-4 days per sample for collecting sufficient aerosol loading for the detailed chemical analyses on the filters.   2020-09-30T00:00:00Z After sampling the filters were stored in a freezer and then shipped in thermal insulated boxes to the CNR-ISAC laboratory in Bologna, Italy, where they were kept frozen at about -20º C until extraction and chemical analyses. About half of each filter was used for the off-line characterization by TOC-analyzer, Ion-chromatography and H-NMR (as described in the paper) performed in Bologna.   2021-04-01T00:00:00Z A portion of the remaining filter (about half of them, as well) was cut in clean room and shipped to PSI laboratories in Zurich, Switzerland for AMS measurements and carbonaceous content quantifications (both WSOC by TOC analyzer and EC/OC on filters by Sunset, as detailed in the paper).  2021-01-01T00:00:00Z The offline AMS technique established by Daellenbach et al. (2016) was used here. Details are described in the present paper.   2021-09-01T00:00:00Z For the data analysis, we used Squirrel v1.57I for the m/z calibration and baseline subtraction, and Pika v1.16I for high-resolution (HR) analysis, in the Igor Pro software package 6.37. The HR peak fitting was performed in the m/z range 12–210. After the peak fitting, the atmospheric concentration of each ion was calculated by normalizing to the known 15N concentration in the sample (from the labeled internal standard) and considering the appropriated Relative Ionization Efficiency (RIE), the extraction volume and portion of the filter that was extracted for analysis. The average water-blank signal was subtracted from the average signal of the following sample and, eventually, all the obtained concentrations were corrected by the average concentrations obtained analyzing the field blanks.   2021-09-01T00:00:00Z Elemental ratios were calculated using the Improved Ambient approach (Canagaratna et al., 2015) from the blank-corrected mass spectra
2025-03-04T21:03:16Z (local files)
2025-03-04T21:03:16Z https://data.iadc.cnr.it/tabledap/hrtofams_offline_nrpm1_concentrations__gvb_nyalesund__may2019jun2020_1wgv01.das";
    String infoUrl "https://metadata.iadc.cnr.it/geonetwork/srv/api/records/0e110925-1f3d-4013-b048-e5a47ca3be6f";
    String institution "Italian National Research Council - Institute of Atmospheric Sciences and Climate (CNR-ISAC)";
    String keywords "ammonium, AMS, atmospheric composition, NH4, Nitrate, NO3, NR-PM1, Ny-Alesund, Organic aerosol, organic aerosol elemental ratios, SO4, sulphate";
    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 78.9177;
    String publisher_name "Italian Arctic Data Center";
    String publisher_type "group";
    String publisher_url "https://iadc.cnr.it";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 78.9177;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "HR-TOF-AMS offline NR-PM1 concentrations - GVB, Ny-Alesund - May2019-Jun2020. Mass concentrations of the main non-refractory PM1 species (sulfate, nitrate, ammonium, chloride and organics) as measured by HR-TOF-AMS on the water-extracts of the PM1 quartz-fiber filters collected by an Hi-Vol sampler (TECORA, equipped with Digitel PM1 sampling inlet) on the roof of Gruvebadet Laboratory at Ny-Alesund, Svalbard from May 2019 til June 2020. Concentrations of specific organic fragments (namely C2H3O and CO2 at m/z 43 and 44, respectively; C2H4O2 and C3H5O2 at m/z 60.02 and 73.03, respectively; all the concentrations data are expressed as ��g m-3. The elemental ratios (i.e., OM:OC, H:C, O:C) measured by HR-AMS are adimensional";
    String time_coverage_end "2020-06-01T00:00:00Z";
    String time_coverage_start "2019-05-24T00:00:00Z";
    String title "HR-TOF-AMS offline NR-PM1 concentrations, GVB, Ny-Alesund, May2019-Jun2020";
    Float64 Westernmost_Easting 11.8942;
  }
}

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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.

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