Under-ice environment surveys using a remotely operated vehicle (ROV) during the MOSAiC expedition 2019/20 ...

• Main Authors: Anhaus, Philipp, Katlein, Christian, Matero, Ilkka, Nicolaus, Marcel, Arndt, Stefanie, Krampe, Daniela, Lange, Benjamin Allen, Regnery, Julia, Rohde, Jan, Schiller, Martin, Ransby, Daniela
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2023
• Subjects: MOSAiC20192020; MOSAiC expedition; Remotely operated vehicle ROV; Sea ice; FRontiers in Arctic marine Monitoring FRAM; Multidisciplinary drifting Observatory for the Study of Arctic Climate MOSAiC; Sea Ice Physics @ AWI AWI_SeaIce; Arctic
• Online Access: https://dx.doi.org/10.1594/pangaea.951077; https://doi.pangaea.de/10.1594/PANGAEA.951077

This bibliography unites different data types collected by a remotely operated vehicle (ROV) underneath drifting sea ice during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition of the research vessel Polarstern (AWI, 2017) between November 2019 and September 2020 (Nicolaus et al., 2022). The observation class M500 ROV was manufactured by Ocean Modules AB (Åtvidaberg, Sweden) and is owned by the Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung (Bremerhaven, Germany). It was equipped with an extended multidisciplinary sensor payload. To investigate the under-ice light field and bio-optical properties, the ROV was equipped with hyperspectral radiometers, transmissometers and a triplet fluorometer. Oceanographic properties were recorded with a standard CTD package including sensors for dissolved oxygen, nitrate and pH. Single beam and multibeam sonar allowed for a three-dimensional mapping of the ice underside, while an acoustic current ... : This datasets contain version 1.0 QC data, but the data is not corrected or polished to every aspect. It can be used, but issues and pitfalls remain. Known issues are the following:• The datasets include also data recorded at the surface, before and after the respected surveys (needed for metadata), e.g., in a tent• Horizontal position (X,Y) ◦ Leg 1: Scale factors and offsets to successfully improve positions for surveys PS122_1_5_62_20191102_1 and PS122_1_6_16_20191105_1 were obtained by comparing positions of markers from the ROV and a terrestrial laser scanner (RIEGL). Scale factors and offsets for surveys PS122_1_6_31_20191106_1, PS122_1_6_118_20191110_1, PS122_1_7_18_20191112_1, PS122_1_7_55_20191113_1 are based on estimates but will be improved also using markers. ◦ Leg 4: Positions for surveys PS122_4_48_213_20200726_1 and PS122_4_49_105_20200728_1 are partly distorted probably due to usage of drifting transponder(s) or erroneous transponder position configuration. Retrieving suitable scale factors ...