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| Dataset Title: | H-NMR functional groups & tracers conc., GVB, Ny-Alesund, May2019-Jun2020
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| Institution: | Italian National Research Council - Institute of Atmospheric Sciences and Climate (Dataset ID: hnmr_functional_groups__tracers_conc__gvb_nyalesund__may2019jun2020_7bdtje) |
| 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
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![[The graph you specified. Please be patient.]](https://data.iadc.cnr.it/erddap/tabledap/hnmr_functional_groups__tracers_conc__gvb_nyalesund__may2019jun2020_7bdtje.png?longitude,latitude,Arom_H&time%3E=2020-05-26T00%3A00%3A00Z&time%3C=2020-06-02T00%3A00%3A00Z&.draw=markers&.marker=5%7C5&.color=0x000000&.colorBar=%7C%7C%7C%7C%7C&.bgColor=0xffccccff)
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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";
}
Arom_H {
Float32 _FillValue NaN;
Float32 actual_range 7.19371e-8, 1.46161e-4;
String long_name "aromatic groups (Ar-H) mass concentration in aerosol WSOC by H-NMR";
String standard_name "mass_concentration_of_aromatic_functional_groups_in_organic_aerosol";
String units "��molH m-3";
}
Anom_vynil_H {
Float32 _FillValue NaN;
Float32 actual_range 5.44389e-8, 2.74068e-4;
String colorBarMaximum "10.0";
String colorBarMinimum "-10.0";
String long_name "anomeric-vynil groups (O-CH-O) mass concentration in aerosol WSOC by H-NMR";
String standard_name "mass_concentration_of_anomeric-vynil_functional_groups_in_organic_aerosol";
String units "��molH m-3";
}
Sug_Alc_Eth_Est_H {
Float32 _FillValue NaN;
Float32 actual_range 3.64611e-6, 0.007265631;
String long_name "aliphatic hydroxyl/alcoxy groups (H-C-O) mass concentration in aerosol WSOC by H-NMR";
String standard_name "mass_concentration_of_h-c-o_functional_groups_in_organic_aerosol";
String units "��molH m-3";
}
Polysub_aliph_Chains_H {
Float32 _FillValue NaN;
Float32 actual_range 7.08289e-6, 0.02221592;
String long_name "unsaturated/substituted groups (H-C-C=) mass concentration in aerosol WSOC by H-NMR";
String standard_name "mass_concentration_of_h-c-c=_functional_groups_in_organic_aerosol";
String units "��molH m-3";
}
MSA_H {
Float32 _FillValue NaN;
Float32 actual_range 6.29288e-7, 0.004554071;
String long_name "Methane-sulphonate hydrogen concentration";
String standard_name "mass_concentration_of_methane-sulphonate_hydrogen_in_organic_aerosol";
String units "��molH m-3";
}
Amines_H {
Float32 _FillValue NaN;
Float32 actual_range 2.52104e-7, 5.3854e-4;
String long_name "Sum of methyl-amines (mono-, di and tri- methyl amines) hydrogen concentration";
String standard_name "mass_concentration_of_methyl-amines_hydrogen_in_organic_aerosol";
String units "��molH m-3";
}
Aliph_Chains_H {
Float32 _FillValue NaN;
Float32 actual_range 7.83726e-6, 0.02310733;
String long_name "unfunctionalized alkyls (H-C) groups mass concentration in aerosol WSOC by H-NMR";
String standard_name "mass_concentration_of_h-c_functional_groups_in_organic_aerosol";
String units "��molH m-3";
}
Arom_C {
Float32 _FillValue NaN;
Float32 actual_range 2.15811e-6, 0.004384829;
String long_name "aromatic groups (Ar-H) mass concentration in aerosol WSOC by H-NMR";
String standard_name "mass_concentration_of_aromatic_functional_groups_in_organic_aerosol";
String units "��gC m-3";
}
Anom_vynil_C {
Float32 _FillValue NaN;
Float32 actual_range 6.53267e-7, 0.003288813;
String colorBarMaximum "10.0";
String colorBarMinimum "-10.0";
String long_name "anomeric-vynil groups (O-CH-O) mass concentration in aerosol WSOC by H-NMR";
String units "��gC m-3";
}
Sug_Alc_Eth_Est_C {
Float32 _FillValue NaN;
Float32 actual_range 0.0, 0.07926143;
String long_name "aliphatic hydroxyl/alcoxy groups (H-C-O) mass concentration in aerosol WSOC by H-NMR";
String standard_name "mass_concentration_of_h-c-o_functional_groups_in_organic_aerosol";
String units "��gC m-3";
}
Polysub_aliph_Chains_C {
Float32 _FillValue NaN;
Float32 actual_range 0.0, 0.266591;
String long_name "unsaturated/substituted groups (H-C-C=) mass concentration in aerosol WSOC by H-NMR";
String standard_name "mass_concentration_of_h-c-c=_functional_groups_in_organic_aerosol";
String units "��gC m-3";
}
MSA_C {
Float32 _FillValue NaN;
Float32 actual_range 2.51715e-6, 0.01821629;
String long_name "Methane-sulphonate carbon concentration";
String standard_name "mass_concentration_of_methane-sulphonate_carbon_in_organic_aerosol";
String units "��gC m-3";
}
Amines_C {
Float32 _FillValue NaN;
Float32 actual_range 0.0, 0.002154158;
String long_name "Sum of methyl-amines (mono-, di and tri- methyl amines) carbon concentration";
String standard_name "mass_concentration_of_methyl-amines_carbon_in_organic_aerosol";
String units "��gC m-3";
}
Aliph_Chains_C {
Float32 _FillValue NaN;
Float32 actual_range 0.0, 0.138644;
String long_name "unfunctionalized alkyls (H-C) groups mass concentration in aerosol WSOC by H-NMR";
String standard_name "mass_concentration_of_h-c_functional_groups_in_organic_aerosol";
String units "��gC m-3";
}
WSOC_NMR_C {
Float32 _FillValue NaN;
Float32 actual_range 1.78131e-4, 0.4962684;
String long_name "WSOC NMR C";
String standard_name "atmosphere_mass_content_of_particulate_organic_matter_dry_aerosol_particles";
String units "��gC m-3";
}
MSA_mass {
Float32 _FillValue NaN;
Float32 actual_range 2.01372e-5, 0.1457303;
String long_name "Methane-sulphonate mass concentration in PM1";
String standard_name "mass_concentration_of_methane-sulphonate_in_organic_aerosol";
String units "��g m-3";
}
Levoglucosan_mass {
Float32 _FillValue NaN;
Float32 actual_range 0.0, 0.009338861;
String long_name "Levoglucosan Mass concentration in PM1";
String standard_name "mass_concentration_of_levoglucosan_in_organic_aerosol";
String units "��g m-3";
}
HMSA_mass {
Float32 _FillValue NaN;
Float32 actual_range 1.77834e-6, 0.005945252;
String long_name "Hydroxy-methane sulphonate (HMSA) Mass concentration in PM1";
String standard_name "mass_concentration_of_hmsa_in_organic_aerosol";
String units "��g m-3";
}
TMA_mass {
Float32 _FillValue NaN;
Float32 actual_range 2.1795e-6, 0.005804615;
String long_name "Tri-methyl amine (TMA) Mass concentration in PM1";
String standard_name "mass_concentration_of_tma_in_organic_aerosol";
String units "��g m-3";
}
DMA_mass {
Float32 _FillValue NaN;
Float32 actual_range 2.11923e-6, 0.003650845;
String long_name "Di-methyl amine (DMA) Mass concentration in PM1";
String standard_name "mass_concentration_of_dma_in_organic_aerosol";
String units "��g m-3";
}
station_id {
String actual_range
"Gruvebadet
Gruvebadet";
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. 2021-01-01T00:00:00Z Aliquots of the aerosol extracts were dried under vacuum and re-dissolved in deuterium oxide (D2O) for organic functional group characterization by H-NMR spectroscopy), as described in the present paper and in previous works (i.e., Paglione et al., 2024). The H-NMR spectra were acquired at 600 MHz in a 5 mm tube using a Varian Unity INOVA spectrometer, at the NMR facility of the Department of Industrial Chemistry of the Bologna University. 2022-01-01T00:00:00Z On the basis of the range of frequency shifts, the signals are attributed to H-C containing specific functionalities (Decesari et al., 2000, 2007). Organic hydrogen concentrations directly measured by H-NMR were converted to organic carbon using stoichiometric H/C ratios specifically assigned to functional groups using the same rationale described in previous works (Paglione et al., 2024). The sum of NMR functional group concentrations expressed in C constitutes the total WSOC measured by H-NMR. 2022-01-01T00:00:00Z Some organic tracers were identified in the H-NMR spectra on the basis of their characteristic patterns of resonances and chemical shifts, using for this scope libraries of reference spectra from the literature (of standard single compounds and/or mixtures from laboratory/chamber experiments and/or from ambient field studies at near-source stations). Among such tracers, methane-sulfonic acid (MSA) and low-molecular-weight alkyl amines (namely, di- and tri- methyl amines, DMA and TMA respectively) were quantified, as well as levoglucosan and hydroxy-methane sulfonate (HMSA)
2025-03-04T20:35:49Z (local files)
2025-03-04T20:35:49Z https://data.iadc.cnr.it/tabledap/hnmr_functional_groups__tracers_conc__gvb_nyalesund__may2019jun2020_7bdtje.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";
String keywords "dimethyl-amine, DMA, H-NMR, H-NMR functional groups, HMSA, Hydroxymethane-sulphonate, Levoglucosan, MA trimethyl-amine, methane-sulphonate, methyl-amine, MSA, Organic aerosol, organic molecular tracers, TMA, WSOC";
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 "H-NMR functional groups & tracers conc. - GVB, Ny-Alesund - May2019-Jun2020. PM1 organic aerosol functional groups distribution as measured by H-NMR, expressed both in ��molH m-3 and ��gC m-3 (using conversion factors described in Decesari et al., 2007) & mass concentrations of some molecular tracers (namely Methane-sulphonate (MSA), Hydroxy methane-sulfonate (HMSA) Di- and Tri- methyl amines (DMA and TMA)), levoglucosan, expressed in ��g m-3";
String time_coverage_end "2020-06-01T00:00:00Z";
String time_coverage_start "2019-05-24T00:00:00Z";
String title "H-NMR functional groups & tracers conc., GVB, Ny-Alesund, May2019-Jun2020";
Float64 Westernmost_Easting 11.8942;
}
}
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