/* DATA DESCRIPTION: Citation: Köhler, Laura; Hartmann, Jörg (2026): 100 Hz meteorological T-Bird observations from the BACSAM II aircraft campaign with Polar 6 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.995975 (DOI registration in progress), In: Köhler, Laura; Hartmann, Jörg; Jurányi, Zsófia: Observations from the BACSAM II aircraft campaign with Polar 6 [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.995979 (dataset in review) 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) (URI: https://gepris.dfg.de/project/268020496) Funding: German Research Foundation (DFG) (URI: http://www.dfg.de/en/), grant/award no. 268020496: TRR 172: ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, and Feedback Mechanisms (URI: https://gepris.dfg.de/project/268020496) 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: P6-247_BACSAM2_2024 (BACSAM II) * BASIS: POLAR 6 (URI: https://doi.org/10.17815/jlsrf-2-153) * 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: P6-247_BACSAM2_2024 (BACSAM II) * BASIS: POLAR 6 (URI: https://doi.org/10.17815/jlsrf-2-153) * 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: P6-247_BACSAM2_2024 (BACSAM II) * BASIS: POLAR 6 (URI: https://doi.org/10.17815/jlsrf-2-153) * METHOD/DEVICE: Aircraft (AC) P6-247_BACSAM2_2024_2404230901 * LATITUDE START: 78.245934 * LONGITUDE START: 15.501729 * LATITUDE END: 78.245934 * LONGITUDE END: 15.501705 * DATE/TIME START: 2024-04-23T08:16:43 * DATE/TIME END: 2024-04-23T12:57:41 * CAMPAIGN: P6-247_BACSAM2_2024 (BACSAM II) * BASIS: POLAR 6 (URI: https://doi.org/10.17815/jlsrf-2-153) * METHOD/DEVICE: Aircraft (AC) P6-247_BACSAM2_2024_2404241001 * LATITUDE START: 78.245952 * LONGITUDE START: 15.501666 * LATITUDE END: 78.245941 * LONGITUDE END: 15.501684 * DATE/TIME START: 2024-04-24T08:14:21 * DATE/TIME END: 2024-04-24T13:01:19 * CAMPAIGN: P6-247_BACSAM2_2024 (BACSAM II) * BASIS: POLAR 6 (URI: https://doi.org/10.17815/jlsrf-2-153) * METHOD/DEVICE: Aircraft (AC) 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 (URI: https://doi.org/10.17815/jlsrf-2-153) * METHOD/DEVICE: Aircraft (AC) Parameter(s): Event label (Event) * PI: Köhler, Laura (https://orcid.org/0000-0001-7094-3280, laura.koehler@awi.de) Date/Time of event (Date/Time) * PI: Köhler, Laura (https://orcid.org/0000-0001-7094-3280, laura.koehler@awi.de) netCDF file (netCDF) * PI: Köhler, Laura (https://orcid.org/0000-0001-7094-3280, laura.koehler@awi.de) * METHOD/DEVICE: T-Bird [towed about 70 m below aircraft] (URI: https://doi.org/10.5194/egusphere-2025-619) netCDF file (File Size) [Bytes] (netCDF (Size)) * PI: Köhler, Laura (https://orcid.org/0000-0001-7094-3280, laura.koehler@awi.de) * METHOD/DEVICE: T-Bird [towed about 70 m below aircraft] (URI: https://doi.org/10.5194/egusphere-2025-619) License: Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/) Status: Curation Level: Enhanced curation (URI: https://wiki.pangaea.de/wiki/Curation_levels) Size: 6 data points Files: All files referred to in data matrix can be downloaded in one go as ZIP or TAR (PANGAEA user account required). To download single files, use the filename from data matrix appended to "https://download.pangaea.de/dataset/995975/files/". */ Event Date/Time netCDF 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