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Ref. No. [UMCES] CBL 2015-009
ACT VS15-02
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Figure 13.
Time series of pH measured by Manta2 pH sensor deployed with antifouling copper screen
during the 1 month GLERL trial.
Top Panel
: Continuous pH
NBS
recordings from instrument (blue line)
and pH
Total
of adjacent grab samples determined by phenol red dye (red circles).
Bottom Panel
:
Difference in measured pH relative to reference samples (Instrument – Dye Ref) observed during
deployment. Dashed line represent offset (ca 0.13) predicted due to difference in pH
NBS
and pH
Total
scales
used by the Manta2 sensor and the dye reference method.