Discrete water samples were collected from Bedford Basin and Halifax Harbour between September 25, 2023, and July 31, 2025, to measure carbonate system parameters (pHtot, Total Alkalinity, Dissolved Inorganic Carbon), salinity, and nutrients. In situ sensor-based measurements of temperature and depth accompanied these samples. Sampling occurred at six regular sampling locations: Tufts Cove (44.6732, -63.5951), MacKay Bridge (44.6772, -63.6143), DRDC Barge (44.6855, -63.6509), Compass Buoy (44.693611, -63.640278), Sackville River (44.7181, -63.6681), and McNabs Island (44.6163, -63.5466). At each site, surface and bottom water samples were collected. All sampling at these stations was conducted onboard the Eastcom dive boat using an automated rosette equipped with Niskin bottles or a Niskin bottle and a sensor package attached to the winch wire. Additional surface sampling was conducted on occasion onboard a smaller vessel in 2024.

Feedstock addition schedule by Planetary Technologies can be found here: https://registry.isometric.com/project/prj_1H502CZZH1S0VMYW