Learn about the CHANOS II (Research Theme II)

Co-Development of a Profiling Dual-Parameter Carbonate Chemistry Sensor to Enhance Monitoring of Ocean Acidification, PI Zhaohui Aleck Wang, WHOI

The Channelized Optical System II (CHANOS II), designed by Woods Hole Oceanographic Institution (WHOI) is deployed on towed vehicles and CTD packages among on-going research surveys to make high-resolution in situ measurements of multiple CO₂ system parameters in a productive fishery region, the U.S. Northeast shelf, with the aim of studying the dynamics of the carbonate system and their impacts on commercial fishery species, such as Atlantic Sea Scallop and other commercial shellfish species.

CHANOS II has the capability to measure dissolved inorganic carbon (DIC) – pH pair to efficiently define the seawater carbonate system in studying and monitoring the conditions of seawater acidity and calcium carbonate saturation state, which are important to determine the shell growth and health of shellfish species. So far, the prototype CHANOS II has primarily been deployed for DIC measurements in coastal waters and estuaries for fixed-location time-series and underway applications.