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Simon, David J; Schaefer, Jonas; Hartmann, Markus; Wetzel, Bruno; Stratmann, Frank (2025): Size-resolved airborne in-situ measurements of aerosol particle number concentrations during the BACSAM II campaign in April 2024 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.976469

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Published: 2025-02-26 • DOI registered: 2025-03-27

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Abstract:
During research flight 09 (RF09) of the airborne measurement campaign Boundary layer and Aerosol and Cloud Study in the Arctic, based on aircraft and T-Bird Measurements (BACSAM) II, size-resolved particle number concentrations were measured at a temporal resolution of 1 Hz. RF09 took place on 25 April 2024 and started and ended in Longyearbyen, Svalbard. The flight was carried out with the research aircraft Polar 6 (P6) of the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI). The P6 dragged the towed-body system T-Bird, which was developed by AWI, with its aerosol payload as a significant contribution by the Leibniz Institute for Tropospheric Research (TROPOS). The T-Bird is described in detail in Juranyi et al., 2025, details concerning RF09 can be found in Simon et al., 2025 (in prep).
Onboard the T-Bird, particle number concentrations were measured with the optical particle counter Portable Optical Particle Spectrometer (POPS, Handix Scientific Inc., USA, Gao et al., 2016, https://doi.org/10.1080/02786826.2015.1131809) in 12 size bins in the particle size range of approximately 185 nm to 3300 nm. The left and right bin boundaries are given in nm in the header of the data file for each column, which contains the particle number concentrations in the respective size range in units of #/ccm. Near-isokinetic sampling was established throughout the flight and the transmission efficiency of the tubing leading from the T-Bird's aerosol inlet to the POPS was close to unity (Simon et al., 2025 (in prep.)). Data are only reported for the times the T-Bird was winched out and flying below the aircraft. All data have been corrected to standard conditions (1013.0 hPa and 273.15 K).
Keyword(s):
aerosol; airborne; Arctic; Polar 6
Supplement to:
Simon, David J (in prep.): Turbulent Aerosol Fluxes from Airborne Measurements over the Arctic Ocean. Geophysical Research Letters
References:
Gao, R S; Telg, H; McLaughlin, R J; Ciciora, S J; Watts, L A; Richardson, M S; Schwarz, J P; Perring, A E; Thornberry, T D; Rollins, A W; Markovic, Milos Z; Bates, T S; Johnson, J E; Fahey, D W (2016): A light-weight, high-sensitivity particle spectrometer for PM2.5 aerosol measurements. Aerosol Science and Technology, 50(1), 88-99, https://doi.org/10.1080/02786826.2015.1131809
Jurányi, Zsófia; Lüpkes, Christof; Stratmann, Frank; Hartmann, Jörg; Schaefer, Jonas; Jörss, Anna-Marie; Schulz, Alexander; Wetzel, Bruno; Simon, David J; Gebhard, Eduard; Stöhr, Maximilian; Hofmann, Paula; Kalmbach, Dirk; Grawe, Sarah; Herber, Andreas (in press): The T-Bird – A new aircraft-towed instrument platform to measure turbulence and aerosol properties close to the surface: Introduction to the aerosol measurement system. EGUsphere, https://doi.org/10.5194/egusphere-2025-619
Project(s):
Arctic Amplification (AC3)
Funding:
German Research Foundation (DFG), grant/award no. 268020496: TRR 172: ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, and Feedback Mechanisms
Coverage:
Median Latitude: 76.215121 * Median Longitude: 13.696873 * South-bound Latitude: 75.799770 * West-bound Longitude: 12.343410 * North-bound Latitude: 76.823620 * East-bound Longitude: 15.311290
Date/Time Start: 2024-04-25T09:09:38 * Date/Time End: 2024-04-25T11:59:01
Minimum ALTITUDE: 34 m * Maximum ALTITUDE: 3009 m
Event(s):
P6-247_BACSAM2_2024_2404251101 * Latitude Start: 78.245956 * Longitude Start: 15.501670 * Latitude End: 78.245945 * Longitude End: 15.501618 * Date/Time Start: 2024-04-25T08:19:42 * Date/Time End: 2024-04-25T12:39:40 * Campaign: P6-247_BACSAM2_2024 (BACSAM II) * Basis: POLAR 6 * Method/Device: Aircraft (AC)
Comment:
The bin boundaries in nm are calculated based on a refractive index (RI) of polystyrene latex (PSL) spheres (RI=1.615+0.001i) (see Gao et al., 2016, https://doi.org/10.1080/02786826.2015.1131809).
----
Acknowledgement
We gratefully acknowledge the funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – Project Number 268020496 – TRR 172, within the framework of the Transregional Collaborative Research Center "ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, and Feedback Mechanisms (AC)³.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DATE/TIMEDate/TimeSimon, David JGeocode
2LONGITUDELongitudeSimon, David JGeocode
3LATITUDELatitudeSimon, David JGeocode
4ALTITUDEAltitudemSimon, David JGeocode – m a.s.l.
5Particle number concentration, particle diameter range 185.9 nm to 204.5 nmN_conc(185.9-204.5)#/cm3Simon, David JPortable Optical Particle Spectrometer (Handix Scientific Inc.) (POPS)
6Particle number concentration, particle diameter range 204.5 nm to 223.7 nmN_conc(204.5-223.7)#/cm3Simon, David JPortable Optical Particle Spectrometer (Handix Scientific Inc.) (POPS)
7Particle number concentration, particle diameter range 223.7 nm to 251.9 nmN_conc(223.7-251.9)#/cm3Simon, David JPortable Optical Particle Spectrometer (Handix Scientific Inc.) (POPS)
8Particle number concentration, particle diameter range 251.9 nm to 310.7 nmN_conc(251.9-310.7)#/cm3Simon, David JPortable Optical Particle Spectrometer (Handix Scientific Inc.) (POPS)
9Particle number concentration, particle diameter range 310.7 nm to 393.2 nmN_conc(310.7-393.2)#/cm3Simon, David JPortable Optical Particle Spectrometer (Handix Scientific Inc.) (POPS)
10Particle number concentration, particle diameter range 393.2 nm to 548.0 nmN_conc(393.2-548.0)#/cm3Simon, David JPortable Optical Particle Spectrometer (Handix Scientific Inc.) (POPS)
11Particle number concentration, particle diameter range 548.0 nm to 692.0 nmN_conc(548.0-692.0)#/cm3Simon, David JPortable Optical Particle Spectrometer (Handix Scientific Inc.) (POPS)
12Particle number concentration, particle diameter range 692.0 nm to 1126.9 nmN_conc(692.0-1126.9)#/cm3Simon, David JPortable Optical Particle Spectrometer (Handix Scientific Inc.) (POPS)
13Particle number concentration, particle diameter range 1126.9 nm to 1387.1 nmN_conc(1126.9-1387.1)#/cm3Simon, David JPortable Optical Particle Spectrometer (Handix Scientific Inc.) (POPS)
14Particle number concentration, particle diameter range 1387.1 nm to 1908.5 nmN_conc(1387.1-1908.5)#/cm3Simon, David JPortable Optical Particle Spectrometer (Handix Scientific Inc.) (POPS)
15Particle number concentration, particle diameter range 1908.5 nm to 2631.3 nmN_conc(1908.5-2631.3)#/cm3Simon, David JPortable Optical Particle Spectrometer (Handix Scientific Inc.) (POPS)
16Particle number concentration, particle diameter range 2631.3 nm to 3257.0 nmN_conc(2631.3-3257.0)#/cm3Simon, David JPortable Optical Particle Spectrometer (Handix Scientific Inc.) (POPS)
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
121968 data points

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