Hendricks, Stefan; Jutila, Arttu; Birnbaum, Gerit; von Albedyll, Luisa; Ricker, Robert; Hutter, Nils; Haas, Christian (2022): Helicopter position and attitude during laser scanner flights of the MOSAiC expedition, version 1 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.950278
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Abstract:
Helicopter position (latitude, longitude, altitude) and attitude (pitch, roll, true heading) were measured by an inertial measurement unit (IMU-57) as part of the combined global navigation satellite system (GNSS) and inertial navigation system (INS) Applanix AP60-Air (hdl:10013/sensor.a9fee346-91e7-4eed-9f2f-89f1368e53a0). The IMU received input signal from two AV39 GNSS antennae installed on the forward and aft cowlings on top of the main cabin of the helicopter. The IMU was mounted in the rear cargo compartment on a sensor plate together with the airborne laser scanner and the sensor plate was connected with dampeners to the helicopter airframe.
The helicopter flights in this data set include surveys where the airborne laser scanner was operated along the MOSAiC drift from the north of the Laptev Sea, across the central Arctic Ocean, and towards the Fram Strait from September 2019 to October 2020. They are both small scale, ~5x5 km grid patterns mainly over the central observatory, and large scale, few tens of km away from RV Polarstern, triangle pattern, or transect flights. The position and attitude data were collected to aid the processing of data from the instruments onboard like the airborne laser scanner (Jutila et al., 2022; doi:10.1594/PANGAEA.950509), the infrared camera (Thielke et al., 2022; doi:10.1594/PANGAEA.941017), and the RGB camera (Neckel et al., 2022; doi:10.1594/PANGAEA.949433). The GPS/INS data was post-processed using Applanix software POSPac Mobile Mapping Suite (MMS) 8.3 and resulted in the 200 Hz precise point positioning (PPP) solution. The post-processed positions correspond to the location of the IMU in the aircraft reference frame in the cargo compartment of the helicopter. For a set of high latitude flights, the post-processing failed due to the low signal-to-noise of the horizontal component of the Earth's rotation rate. In this case only the 10 Hz real time navigation (RTNav) solution is provided. The positioning and altitude error for the real time can be metres, while the post-processed 200 Hz solution has an accuracy of decimetres. The challenging nature of GNSS (limited satellite visibility, ionospheric interference) and inertial navigation means that the quality of the INS/GPS is degraded even after post-processing compared to lower latitude data.
Related to:
Hutter, Nils; Hendricks, Stefan; Jutila, Arttu; Ricker, Robert; von Albedyll, Luisa; Birnbaum, Gerit; Haas, Christian (2023): Digital elevation models of the sea-ice surface from airborne laser scanning during MOSAiC. Scientific Data, 10(1), 729, https://doi.org/10.1038/s41597-023-02565-6
Jutila, Arttu; Hendricks, Stefan; Birnbaum, Gerit; von Albedyll, Luisa; Ricker, Robert; Helm, Veit; Hutter, Nils; Haas, Christian (2023): Geolocated sea-ice or snow surface elevation point cloud segments from helicopter-borne laser scanner during the MOSAiC expedition, version 1. PANGAEA, https://doi.org/10.1594/PANGAEA.950509
Neckel, Niklas; Fuchs, Niels; Birnbaum, Gerit; Hutter, Nils; Jutila, Arttu; Buth, Lena; von Albedyll, Luisa; Ricker, Robert; Haas, Christian (2023): Helicopter-borne RGB orthomosaics and photogrammetric digital elevation models from the MOSAiC Expedition. Scientific Data, 10(1), 426, https://doi.org/10.1038/s41597-023-02318-5
Neckel, Niklas; Fuchs, Niels; Birnbaum, Gerit; Hutter, Nils; Jutila, Arttu; Buth, Lena; von Albedyll, Luisa; Ricker, Robert; Haas, Christian (2023): Helicopter-borne RGB orthomosaics and photogrammetric Digital Elevation Models from the MOSAiC Expedition. PANGAEA, https://doi.org/10.1594/PANGAEA.949433
Thielke, Linda; Huntemann, Marcus; Hendricks, Stefan; Jutila, Arttu; Ricker, Robert; Spreen, Gunnar (2022): Helicopter-borne thermal infrared sea ice surface temperatures during the MOSAiC expedition, version 2. PANGAEA, https://doi.org/10.1594/PANGAEA.941017
Thielke, Linda; Huntemann, Marcus; Hendricks, Stefan; Jutila, Arttu; Ricker, Robert; Spreen, Gunnar (2022): Sea ice surface temperatures from helicopter-borne thermal infrared imaging during the MOSAiC expedition. Scientific Data, 9(1), 364, https://doi.org/10.1038/s41597-022-01461-9
Further details:
Nicolaus, Marcel; Perovich, Donald K; Spreen, Gunnar; Granskog, Mats A; von Albedyll, Luisa; Angelopoulos, Michael; Anhaus, Philipp; Arndt, Stefanie; Belter, Hans Jakob; Bessonov, Vladimir; Birnbaum, Gerit; Brauchle, Jörg; Calmer, Radiance; Cardellach, Estel; Cheng, Bin; Clemens-Sewall, David; Dadic, Ruzica; Damm, Ellen; de Boer, Gijs; Demir, Oguz; Dethloff, Klaus; Divine, Dmitry V; Fong, Allison A; Fons, Steven W; Frey, Markus M; Fuchs, Niels; Gabarró, Carolina; Gerland, Sebastian; Goessling, Helge; Gradinger, Rolf; Haapala, Jari; Haas, Christian; Hamilton, Jonathan; Hannula, Henna-Reetta; Hendricks, Stefan; Herber, Andreas; Heuzé, Céline; Hoppmann, Mario; Høyland, Knut Vilhelm; Huntemann, Marcus; Hutchings, Jennifer K; Hwang, Byongjun; Itkin, Polona; Jacobi, Hans-Werner; Jaggi, Matthias; Jutila, Arttu; Kaleschke, Lars; Katlein, Christian; Kolabutin, Nikolai; Krampe, Daniela; Kristensen, Steen Savstrup; Krumpen, Thomas; Kurtz, Nathan; Lampert, Astrid; Lange, Benjamin Allen; Lei, Ruibo; Light, Bonnie; Linhardt, Felix; Liston, Glen E; Loose, Brice; Macfarlane, Amy R; Mahmud, Mallik; Matero, Ilkka; Maus, Sönke; Morgenstern, Anne; Naderpour, Reza; Nandan, Vishnu; Niubom, Alexey; Oggier, Marc; Oppelt, Natascha; Pätzold, Falk; Perron, Christophe; Petrovsky, Tomasz; Pirazzini, Roberta; Polashenski, Chris; Rabe, Benjamin; Raphael, Ian; Regnery, Julia; Rex, Markus; Ricker, Robert; Riemann-Campe, Kathrin; Rinke, Annette; Rohde, Jan; Salganik, Evgenii; Scharien, Randall K; Schiller, Martin; Schneebeli, Martin; Semmling, Maximilian; Shimanchuk, Egor; Shupe, Matthew D; Smith, Madison M; Smolyanitsky, Vasily M; Sokolov, Vladimir; Stanton, T; Stroeve, Julienne C; Thielke, Linda; Timofeeva, Anna; Tonboe, Rasmus Tage; Tavri, Aikaterini; Tsamados, Michel; Wagner, David N; Watkins, Daniel; Webster, Melinda; Wendisch, Manfred (2022): Overview of the MOSAiC expedition: Snow and sea ice. 10(1), https://doi.org/10.1525/elementa.2021.000046
SENSOR (2022): Metadata for navigation system applanix at Current Version. Alfred Wegener Institut Helmholtz Centre for Polar and Marine Research, hdl:10013/sensor.a9fee346-91e7-4eed-9f2f-89f1368e53a0
Project(s):
Funding:
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AFMOSAiC-1_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PS122_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate / MOSAiC
Federal Ministry of Education and Research (BMBF), grant/award no. 03F0866A: MOSAiC 1 - IceSense: Fernerkundung der saisonalen Entwicklung klimarelevanter Meereis-Eigenschaften; Leitantrag; Vorhaben: Saisonale Veränderungen von Eisdicken und Schmelztümpeln
Coverage:
Median Latitude: 85.396832 * Median Longitude: 68.254087 * South-bound Latitude: 78.355862 * West-bound Longitude: -35.606555 * North-bound Latitude: 89.140237 * East-bound Longitude: 135.184638
Date/Time Start: 2019-09-28T03:49:41 * Date/Time End: 2020-09-28T12:15:43
Minimum Elevation: -4425.6 m * Maximum Elevation: -228.0 m
Event(s):
PS122/1_2-45 (PS122_1_2_45_2019092801) * Latitude Start: 82.130588 * Longitude Start: 119.612547 * Latitude End: 82.259150 * Longitude End: 119.990315 * Date/Time Start: 2019-09-28T03:37:41 * Date/Time End: 2019-09-28T04:34:13 * Elevation: -4021.7 m * Sensor URI: sensor.awi.de * Campaign: PS122/1 (MOSAiC20192020) * Basis: Polarstern * Method/Device: Helicopter (HELI) * Comment: IR camera measurement from 04:01:46 to 04:08:11; IR camera measurement from 04:24:49 to 04:33:18
PS122/1_2-57 (20191002_01) * Latitude Start: 85.167810 * Longitude Start: 134.462732 * Latitude End: 85.132120 * Longitude End: 135.184638 * Date/Time Start: 2019-10-02T05:50:01 * Date/Time End: 2019-10-02T06:49:11 * Elevation: -4285.4 m * Sensor URI: sensor.awi.de * Campaign: PS122/1 (MOSAiC20192020) * Basis: Polarstern * Method/Device: Helicopter (HELI) * Comment: first laser scanner and IR camera survey over the MOSAiC floe; IR camera measurements from 05:56:28 to 06:46:04
PS122/1_2-167 (20191020_01) * Latitude Start: 84.946354 * Longitude Start: 132.755420 * Latitude End: 84.956537 * Longitude End: 132.584526 * Date/Time Start: 2019-10-20T01:05:02 * Date/Time End: 2019-10-20T02:11:21 * Elevation: -4301.5 m * Sensor URI: sensor.awi.de * Campaign: PS122/1 (MOSAiC20192020) * Basis: Polarstern * Method/Device: Helicopter (HELI) * Comment: Flight ID 20191020_01 Flight over the floe
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Hendricks, Stefan | |||
| 2 | Flight number | Flight | Hendricks, Stefan | |||
| 3 | DATE/TIME | Date/Time | Hendricks, Stefan | Geocode – start | ||
| 4 | DATE/TIME | Date/Time | Hendricks, Stefan | Geocode – end | ||
| 5 | LATITUDE | Latitude | Hendricks, Stefan | Geocode – min | ||
| 6 | LATITUDE | Latitude | Hendricks, Stefan | Geocode – max | ||
| 7 | LONGITUDE | Longitude | Hendricks, Stefan | Geocode – min | ||
| 8 | LONGITUDE | Longitude | Hendricks, Stefan | Geocode – max | ||
| 9 | Binary Object | Binary | Hendricks, Stefan | |||
| 10 | Binary Object (File Size) | Binary (Size) | Bytes | Hendricks, Stefan |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Basic curation (CurationLevelB) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
134 data points