Saanich Inlet field and laboratory methods related to experimental rate data acquired aboard the R/V John Strickland during two cruises in August, 2021 and June, 2022

These data include oceanographic, chemical, and biogeochemical rate measurements relating to oxygen, nitrogen, and sulfur species from Saanich Inlet, British Columbia, Canada, spanning lower oxycline and anoxic depths in the basin. Data and samples were collected aboard the R/V John Strickland during two cruises in August, 2021 and June, 2022. Data from 2021 capture the dynamics of an oxygen renewal event of the deep anoxic basin, which occurred between the second and third sampling days. Data from 2022 were collected during stable, stratified conditions with complete anoxia in the deep basin throughout the sampling period.

Rate measurements are from 15N-labeled tracer experiments tracking the production and consumption of nitrous oxide (N2O), a potent greenhouse gas that is produced under hypoxic and anoxic conditions. These data evaluate the extent to which consumption of N2O in the deep basin balances out is production in overlying waters and were collected by Dr. Sheryl Murdock (Arizona State University) and Dr. Laura Bristow (University of Gothenburg).