Hat Island and Mission Beach discrete and continuous time series data for carbonate chemistry and other physical/biogechemical parameters

High-resolution (15-minute frequency) monitoring data of pH, dissolved oxygen, salinity, temperature, depth, and chlorophyll from July 2015 – April 2016 in two seagrass systems of Puget Sound, WA, USA. Grab samples for instrument validation and carbonate chemistry analysis were periodically taken next to the in-situ instrumentation and are included.