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Ref. No. [UMCES] CBL 2016-010
ACT VS16-01
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The global response of the AroW-USB for all nine temperature-salinity trials is shown in figure
V. In general readings are well correlated across the entire range of DO concentrations (hypoxic to
supraoxic) covering all temperature and salinity ranges tested. Highlighted deviations are likely to
reflect bubble contamination of the sensor foil. A linear regression of the data (n=257; r
2
= 0.976;
p<0.0001) produced a slope of 0.969 and intercept of 0.114. Highlighted data were omitted from the
regression because of expected bubble contamination.
Figure V
.
Concordance of JFE AroW-USB (sn 0181) oxygen measures paired with discrete Winkler
DO reference samples. Dotted line represents perfect agreement between the two measures.
Individual response slopes and intercepts of instrument versus reference DO for each of the
laboratory trials are summarized in Table 6. Response slopes increased slightly with temperature when
averaged across the three salinity trials. Means of the slopes were 0.996, 1.029, and 1.065 for 5, 15,
and 30
o
C respectively. Differences in slopes across salinity levels did not exhibit a consistent trend
and were within 0.04 across the three levels.