[{"title":"Navigation, meteorological and surface seawater data from the Arctic Ocean 2018 expedition","summary":"Measurements from icebreaker Oden\u2019s navigation, meteorological and surface seawater systems during the Arctic Ocean 2018 expedition (also referred to as MOCCHA-ACAS-ICE) to the High Arctic. Wind, temperature, humidity and pressure measurements were made from sensors above Oden\u2019s bridge (25-35 m above sea level). Measurements of seawater properties (temperature, salinity, conductivity and sound velocity) were performed by sensors in the main laboratory on the pumped underway line, with an intake at 8 m depth. Water temperature was also measured with hull contact sensors located close to the underway line intake.","citations":"","comments":"Sensors are operated and maintained by the ship crew and the Swedish Polar Research Secretariat staff. The following processing was carried out post-expedition: (i) True winds were re-calculated from the measured ship-relative winds using the navigation data to correct an error in the original true wind calculation. (ii) Large variations in the underway line salinity measurement (resulting from variations in line flow speed due to e.g. ice blockages) were removed and interpolated over. A flag indicates interpolation. Other underway line measurements are not adjusted.\r\n\r\n\r\nData from the various systems are combined into a single, cruise-length file. The file is time-averaged to either 1-minute or 30-minute, to correspond with the micrometeorological averaging periods used for the mast sensors.","category":"Atmosphere","subcategory":"Observations","keywords":"Ship log; Arctic Ocean 2018; AO2018; AO18; Meteorology; Seawater temperature; Salinity; Ship navigation; Position and speed; High Arctic; ACAS","scientist":"John Prytherch","firstname":"John","lastname":"Prytherch","address":"Department of Meteorology (MISU), Stockholm University","postalcode":"SE-106 91","city":"Stockholm","province":"","country":"Sweden","parameters":"Earth science > Atmosphere","location":"Ocean > Arctic Ocean","progress":"Completed","language":"English","project":"Arctic Ocean 2018. These data were processed as part of the Arctic Climate Across Scales (ACAS) project, funded by the Knut and Alice Wallenberg Foundation. Project PI Michael Tjernstr\u00f6m (MISU).","publisher":"Bolin Centre for Climate Research, Stockholm University","version":"1.1","constrains":"None","access":"Free"}]