| Summary: | This dataset contains temperature and salinity data collected in the Chukchi Sea during the 5-20 October, 2020 collaborative ecosystem research cruise on R/V Norseman II. The dataset consists of bottle and CTD data. These data are represented as 3 csv tables describing all station locations, CTD data and water sample data from bottles on the CTD rosette, and CTD data all depths measured on the cast. CTD cast data are also included in a netCDF file compliant with the CF conventions. The goal of the fall DBO cruise on the Norseman II was to evaluate ecosystem status and change at the Distributed Biological Observatory (DBO) time series sites, to deploy a mooring and sediment trap at the M8 site in the northern Bering Sea (DBO1 region), and to turn around the Chukchi Ecosystem Observatory (CEO) mooring array in the NE Chukchi Sea (DBO4 region). The DBO fall cruise was a consortium of funded projects from the National Oceanic and Atmospheric Administration (NOAA), the North Pacific Research Board (NPRB), National Ocean Partnership Program (NOPP), Arctic Marine Biodiversity Observing Network (AMBON), and Alaska Ocean Observing System (AOOS), focused on benthic sampling as well as water column measurements. The shipboard sampling included CTD/rosette sampling for temperature, salinity, and vertical water column sampling for other water column indicators. The CTD was deployed at all DBO stations and the two mooring sites (M8 in DBO1 region and CEO in the DBO4 region). We will collect water for chlorophyll, phytoplankton taxonomy, nutrients, oxygen-18/16 ratios, eDNA, zooplankton, van Veen grab deployments for macrofauna (population studies) and sediments (carbon content, grain size, HABS), and a single HAPS core deployment for collection of undisturbed sediment cores for carbon cycling experiments at select stations. A seabird observer on the bridge will complete the core DBO standard activities.
|
|---|