Christian Stranne, Johan Nilsson, Julia Muchowski, Julek Chawarski Oceanographic CTD data from the Ryder 2019 expedition Bolin Centre Database 2020 Datafile Marine Hydrography CTD data Conductivity Temperature Dissolved oxygen Turbidity Fluorescence Ryder 2019 expedition Earth science > Oceans Christian Stranne 2020-08-12T02:00:00+00:00 English 1.0 CTD data from Ryder 2019 expedition are organized in xlsx files (one for each station) and include the following parameters*: * pre = pressure (dbar) * tem (1/2) = concetrvative temperature (°C) for first/second sensor pack * sal (1/2) = absolute salinity (g/kg) derived from first/second sensor pack * rho (1/2) = in-situ density (kg/m³) derived from first/second sensor pack * pt (1/2) = potential temperature with reference to sea surface (°C) derived from first/second sensor pack * time = time in matlab datenum format (limited use due to missing decimals) * lon = longitude (decimal °E) * lat = latitude (decimal °N) * ox = oxygen concentration (µmol/kg) * oxSat = oxygen saturation (%) * svp = Sound Velocity (Chen-Millero, m/s) * fluor = Fluorescence, WET Labs ECO-AFL/FL (mg/m³) * turb = Turbidity, WET Labs ECO (NTU) * prho (1/2) = potential density with reference to the sea surface (kg/m³) derived from first/second sensor pack *Note that there was a dual temperature/conductivity sensor pack installed on the CTD. Therefore, some parameters ends with 1 or 2 indicating the sensor pack number. Note also that all data are binned in 0.2 dbar bins. The dataset includes a list (txt file) with station numbers, timepoints, latitude and longitude for all 51 CTD stations. Data were collected with a Seabird 911 CTD. The CTD was equipped with a 24 Niskin bottle (12 liters) rosette and the following sensors: Dual SeaBird temperature (SBE 3), conductivity (SBE 04C), dissolved oxygen (SBE 43), turbidity and fluorescence (WET Labs ECO-AFL/FL) and a Benthos Altimeter PSA-916D. In situ conductivity and temperature have been converted to conservative temperature and absolute salinity using the TEOS-10 equation of state. The Ryder expedition was carried out with Swedish icebreaker Oden starting/ending in US Air Force Base Thule, Northwest Greenland, Aug 5/Sept 10, 2019. It was multidisciplinary with a broad range of data collected. The main target was Sherard Osborn Fjord where Ryder Glaciers drains the north-western Greenland Ice Sheet. Included in the expedition survey areas were also Petermann Fjord and adjacent Hall Basin, northern Nares Strait and an area northeast of Ellesmere Island in the Lincoln Sea.