This dataset consists of vertical profiles of discrete depth sampled weekly at a fixed station under the ice in Franklin Bay (Southeastern Beaufort Sea) to determine bacteria abundance. Sampling took place from December 2003 to May 2004 through the moon-pool of the CCGS Amundsen for depth ranging from 10m to the bottom and through a hole in the ice cover for the surface depth (3-10m). Bacteria concentrations were counted by flow cytometry.

Total inorganic carbon, alkalinity, total organic carbon, and salinity measured in melted ice core sections. Full core profiles with 10-cm resolution taken weekly at Takatuk. Partial pressure of CO2 measured 2-3 times per week through peepers at three depths at each of 6 locations, 3 at Takatuk and 3 at Bruney Island. Total inorganic carbon measured coulometrically, alkalinity by potentiometric titration, organic carbon by high temperature catalytic combustion, and salinity by diffraction. pCO2 measured by gas chromatograph.