Sea surface temperature (SST) measurements at different depths and auxiliary environmental data collected at 62 stations on AMT28 (JR18001) using the Simple Oceanographic floating Device (SOD) and Infrared SST Autonomous Radiometer.

This dataset consists of sea surface temperature (SST) measurements collected from a range of instruments, at slightly different depths, at 62 stations during the 28th Atlantic Meridional Transect (AMT28/JR18001) research cruise (September and October 2018) on the RRS James Clark Ross (JCR). The data includes sea surface temperature (SST) measurements collected from a Smartfin (internal and external sensors) at approximately 0.1 m, and SST data at 1 m collected from TidbiT v2 and iButton sensors, which were calibrated to an NPL-traceable Hart Scientific 1504 temperature bridge and Themometrics ES 225 temperature probe. These sensors were mounted to a Simple Oceanographic floating Device (SOD) and deployed for approximately 20 minutes at each station. Additionally, the dataset includes SST skin measurements from an Infrared Sea surface temperature Autonomous Radiometer (ISAR) and SST data at 5 m collected from the ship's underway system using a Seabird SBE38 sensor. Auxiliary environmental data (air temperature, photosynthetically available radiation (PAR), and wind speed) collected from the ship's underway system and from a Gill Windmaster mounted on the foremast of the ship are included. Median and robust standard deviations (SDV) of all variables are provided over the duration of the SOD deployments at each station. The European Space Agency is acknowledged for their funding and contributions to the collection of the ISAR data on AMT28.