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Readying the 12-bottle CTD for a cast aboard the USCGC Healy on the 2010 International Extended Continental Shelf Survey. Here the USGS/University of South Florida Arctic Ocean Acidification Study team have replaced one Niskin Bottle with a prototype autonomous high precision spectrophotometric pH meter that continuously records pH values on the trip up & down- note data downloading upon its return. Filmed by PolarTREC teacher Bill Schmoker.

This program is supported by the National Science Foundation. Any opinions, findings, and conclusions or recommendations expressed by this program are those of the PIs and coordinating team, and do not necessarily reflect the views of the National Science Foundation.