This data set was acquired with a Sippican MK21 XBT Expendable Probe during Nathaniel B. Palmer expedition NBP1302 conducted in 2013 (Chief Scientist: Dr. Dennis Hansell). These data files are of Sippican MK21 Export Data File format and include Temperature data that have not been processed. Data were acquired as part of the project(s): TRACERS, and funding was provided by NSF grant(s): ANT10-43454 and ANT11-42117.