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The data set consists of high resolution airborne measurements that were obtained mainly over Svalbard and near the sea ice edge north of Svalbard on three days in March 2013 during the campaign "SpringTime Atmospheric Boundary Layer Experiment (STABLE). STABLE was led by the Alfred Wegener Institue (AWI) and by the Finnish Meteorological Institute (FMI). The measurements were performed using the POLAR 5 research aircraft, where all research flights of 5-6 hours duration started and ended at Longyearbyen airport. During STABLE, observations focused on the vertical structure of the lower troposphere as well as boundary layer modifications, e.g. during marine cold-air outbreaks and by convection over leads in sea ice. The data set presented here predominantly consists of measurements that were obtained over the Wijdefjorden, which is a North-South oriented fjord with a length of more than 100km in the northern part of Spitsbergen. The measurements were carried out to study the boundary layer structure in the fjord as well as for analyses of the role of the topography on the atmospheric conditions. In its southern part, the fjord was covered by land-fast sea ice until about 72.5km north of the fjord's head. In its northern part, there was open water. leg #14 of saw-tooth pattern over Wijdefjorden

The VISSS is a camera system that records precipitating snow from two perspectives. Here, movies and images of falling precipitation particles are provided for MOSAiC. For more details on the VISSS sensor, see Maahn et al. (2023). The instrument was located at Met City until April 26 2020, but was moved to the P deck of Polarstern on April 30 2020 due to deteriorating sea ice conditions.

Generating genomic data for 19 tropical reef fish species of the Western Indian Ocean, we investigate how species ecology influences genetic diver- sity patterns from local to regional scales. We distinguish between the α, β and γ components of genetic diversity, which we subsequently link to six ecological traits. We find that the α and γ components of genetic diversity are strongly correlated so that species with a high total regional genetic diversity display systematically high local diversity. The α and γ diversity components are negatively associated with species abundance recorded using underwater visual surveys and positively with body size. Pelagic larval duration is found to be negatively related to genetic β diversity supporting its role as a dispersal trait in marine fishes. Deviation from the neutral theory of molecular evolution motivates further effort to understand the processes shaping genetic diversity and ultimately the diversification of the exceptional diversity of tropical reef fishes. Data files and R codes used to perform analyses in Donati et al. "Species ecology explains the various spatial components of genetic diversity in tropical reef fishes". Donati_et_al_Species_ecology_genetic_diversity_data.zip Donati_et_al_Species_ecology_genetic_diversity_R_codes.zip

Multibeam data (MBES) was recorded during the RV MARIA S. MERIAN cruise MSM20/4 (WACOM) using the KONGSBERG EM1002 Multibeam Echosounder. The cruise took place between 14.3.2012 and 7.4.2012 in the West Atlantic (Florida Strait, Caribbean). Being a part of the International Program TRACES (Trans Atlantic Corel Ecosystem Studies) the main research goal of the cruise was the investigation of the occurrence and diversity of cold water corals (CWC), to compare these findings with information about coral ecosystems in other parts of the Atlantic. Using sampling equipment (CTD, box and gravity corer) as well as the Remotely Operating Vehicle (ROV) CHEROKEE (MARUM) physical and biological factors that control the occurrence of CWCs were further examined. Hydroacoustic equipment like the EM122, EM1002 and Parasound PS70 by ATLAS were used to map research areas and therefore to plan sampling stations. Due to the survey region's water depth of 400 – 800 m the EM1002 produced data with a higher resolution and less artefacts compared to the EM122 deep sea echosounder.CI Citation: Paul Wintersteller (seafloor-imaging@marum.de) as responsible party for bathymetry raw data ingest and approval.Description of the data source:During the RV MARIA S MERIAN cruise MSM20/4 the ships hull-mounted KONGSBERG EM1002 multibeam echosounder with a nominal sounding frequency of 95 kHz was utilized. Up to 111 2°x2° width individual beams are formed for each ping while the seafloor is detected using amplitude and phase information for each beam sounding. The beam spacing was equidistal and the maximum swath angle was 120°. Pitch and Yaw stabilizations were used.Multiple CTDs were taken during the cruise so that Sound Velocity Profiles could have been calculated and applied to the multibeam data. In addition to the KONGSBERG EM120 the EM1002 was used as well.For further information consult https://www.km.kongsberg.com/.Responsible person during this cruise / PI: Paul Wintersteller (pwintersteller@marum.de)Description of data processing:Postprocessing and products were conducted by the Seafloor-Imaging & Mapping group of MARUM/FB5, responsible person: Paul Wintersteller (seafloor-imaging@marum.de). The open source software MB-System suite (Caress, D.W., and D.N. Chayes, MB-System Version 5.5, open source software distributed from the MBARI and L-DEO web sites, 2000-2012.) was utilized for this purpose. A tide correction was applied, based on the Oregon State University (OSU) tidal prediction software (OTPS) that is retrievable through MB-System. CTD and XCTD measurements were done between or during the MBES surveys to receive sound velocity profiles (SVP), which were applied during the acquisition of the hydroacoustic data. NetCDF (GMT) grids of the edited data as well as statitics were created with mbgrid. The published bathymetric grid of the cruise MSM20/4 has a resolution of 20 m. Additionally grids containing data from the four different working areas (Transit Yucatan, West Florida, Yucatan and Bahamas), which have a resolution of 10 m, are additionally published.No total propagated uncertainty (TPU) has been calculated to gather vertical or horizontal accuracy. A higher resolution is, at least partly, achievable. The grid extended with _num represents a raster dataset with the statistical number of beams/depths taken into account to create the depth of the cell. The extended _sd -grid contains the standard deviation for each cell. All grids produced are retrievable through the PANGAEA database (www.pangaea.de).Projection: Geographic Coordinate System / WGS84Chief Scientist: Dierk Hebbeln (dhebbeln@marum.de)CR: https://www.tib.eu/de/suchen/id/awi%3Adoi~10.2312%252Fcr_msm20_4/CSR: https://www2.bsh.de/aktdat/dod/fahrtergebnis/2012/20120077.htmA special thanks goes to various wachkeepers during the cruise and the student assistance who helped with the product: Stefanie Gaide