Citation:

PANGAEA.995979 (dataset in review)

Name: 100 Hz meteorological T-Bird observations from the BACSAM II aircraft campaign with Polar 6
Published: 2026-07-29
License: https://creativecommons.org/licenses/by/4.0/
Keywords: airborne; Arctic; Atmosphere; boundary layer; meteorological parameters; Polar 6; pressure; Temperature; wind

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Published: 2026-07-29

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Abstract:

The BACSAM II aircraft campaign, conducted with the polar research aircraft Polar 6 and the towed body T-Bird, took place from 3 April to 2 May 2024. It was based in Longyearbyen, Svalbard. In total, 11 low-level research flights and two transit flights were conducted, covering the region around Svalbard and north of Greenland. T-Bird data are available for 5 low-level research flights.

The data sets present the high-frequency meteorological observations from the T-Bird towed about 70 m below the Polar 6, consisting of 100 Hz wind components (u, v, and w) derived from the five-hole-probe, as well as temperature and pressure. The wind measurements are considered reliable only during straight flight segments and are not recommended for use during aircraft turns. In addition, the data sets provide GPS position and ground speed, together with pitch and roll angles and true airspeed.

Keyword(s):

airborne; Arctic; Atmosphere; boundary layer; meteorological parameters; Polar 6; pressure; Temperature; wind

Related to:

Köhler, Laura (2026): BACSAM II: Turbulence and aerosol in situ aircraft observations in the Arctic with Polar 6 and T-Bird (Version v1.0.0) [software]. GitHub, https://github.com/LauraKoehler/bacsam2_processing

Köhler, Laura (2026): polair [software]. Zenodo, https://doi.org/10.5281/ZENODO.21065057

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: 78.804362 * Median Longitude: 10.141221 * South-bound Latitude: 78.245934 * West-bound Longitude: -16.663061 * North-bound Latitude: 81.596583 * East-bound Longitude: 15.501779

Date/Time Start: 2024-04-13T09:28:24 * Date/Time End: 2024-04-25T12:39:40

Event(s):

P6-247_BACSAM2_2024_2404130502 * Latitude Start: 81.596309 * Longitude Start: -16.663061 * Latitude End: 81.596583 * Longitude End: -16.659211 * Date/Time Start: 2024-04-13T09:28:24 * Date/Time End: 2024-04-13T13:49:23 * Campaign: (BACSAM II) * Basis: POLAR 6 * Method/Device: Aircraft (AC)

P6-247_BACSAM2_2024_2404150701 * Latitude Start: 78.245941 * Longitude Start: 15.501748 * Latitude End: 78.245956 * Longitude End: 15.501779 * Date/Time Start: 2024-04-15T08:48:52 * Date/Time End: 2024-04-15T13:43:50 * Campaign: (BACSAM II) * Basis: POLAR 6 * Method/Device: Aircraft (AC)

P6-247_BACSAM2_2024_2404170801 * Latitude Start: 78.245951 * Longitude Start: 15.501726 * Latitude End: 78.245946 * Longitude End: 15.501600 * Date/Time Start: 2024-04-17T12:19:44 * Date/Time End: 2024-04-17T17:22:43 * Campaign: (BACSAM II) * Basis: POLAR 6 * Method/Device: Aircraft (AC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device
1	Event label	Event		Köhler, Laura
2	Date/Time of event	Date/Time		Köhler, Laura
3	netCDF file	netCDF		Köhler, Laura	T-Bird [towed about 70 m below aircraft]
4	netCDF file (File Size)	netCDF (Size)	Bytes	Köhler, Laura	T-Bird [towed about 70 m below aircraft]

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

6 data points

Data

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1 Event	2 Date/Time	3 netCDF	4 netCDF (Size) [Bytes]
P6-247_BACSAM2_2024_2404130502	2024-04-13T09:28:24	BACSAM2_20240413_RF41_tbird_100Hz.nc	135.9 MBytes
P6-247_BACSAM2_2024_2404150701	2024-04-15T08:48:52	BACSAM2_20240415_RF05_tbird_100Hz.nc	71.8 MBytes
P6-247_BACSAM2_2024_2404170801	2024-04-17T12:19:44	BACSAM2_20240417_RF06_tbird_100Hz.nc	105.1 MBytes
P6-247_BACSAM2_2024_2404230901	2024-04-23T08:16:43	BACSAM2_20240423_RF07_tbird_100Hz.nc	100 MBytes
P6-247_BACSAM2_2024_2404241001	2024-04-24T08:14:21	BACSAM2_20240424_RF08_tbird_100Hz.nc	29.5 MBytes
P6-247_BACSAM2_2024_2404251101	2024-04-25T08:19:42	BACSAM2_20240425_RF09_tbird_100Hz.nc	107.1 MBytes