Processed near-surface underway temperature and salinity (TSG) observations from the South African National Antarctic Expedition (SANAE) on the SA Agulhas II Voyage 005, December 2012

Here we present the 10-second resolution processed Thermosalinograph (TSG) data collected between 07 December 2012 and 19 February 2013, during the South African National Antarctic Expedition (SANAE) on the SA Agulhas II Voyage 005. A SeaBird SBE45 Thermosalinograph (TSG) is used to opportunistically collect underway near-surface temperature and conductivity measurements during research and monitoring cruises. Water is continuously pumped to the TSG from an intake located in the hull of the vessel, and the observations are continuously interfaced with navigational information. A temperature sensor close to the intake provides temperature measurements of the incoming water (T1). The temperature of the water inside the conductivity cell (T2) is used to accurately compute salinity (S) from the conductivity measurements (C). The South African National Antarctic Expedition (SANAE) is an annual cruise undertaken by the Department of Forestry, Fisheries and the Environment (DFFE) to change the overwintering teams in Antarctica and to replenish the supplies at the SANAE IV Research base. This voyage was to deliver the SANAE 52 team to the island and return with the SANAE 51 team.