311
Fig. 11.6 The CO 2 concentration in seawater in Tokyo Bay. The dotted line shows the concentration of CO 2 in the atmosphere. When the concentration is below the dotted line, CO 2 in the atmosphere is taken up by the seawater. Except for the site near the incoming river, atmospheric CO 2 is
taken up in the seawater throughout the year in Tokyo Bay. The bay becomes a sink even when
considering the annual average of CO 2 gas exchange over its entire area (ca. 140 g CO 2 /m
2
/year).
(Modified from Kubo et al. 2017)
which fluctuations in CO 2 concentration were measured continuously at various
time scales, such as 24 h or throughout the year. Therefore, these statistics include
large uncertainty and bias. In particular, in low-salinity waters, total alkalinity is
generally low and the buffer effect of carbonate chemistry is weak, causing high
temporal variability in CO 2 in water.
11 CO 2 Uptake in the Shallow Coastal Ecosystems Affected…
Fig. 11.6 The CO 2 concentration in seawater in Tokyo Bay. The dotted line shows the concentration of CO 2 in the atmosphere. When the concentration is below the dotted line, CO 2 in the atmosphere is taken up by the seawater. Except for the site near the incoming river, atmospheric CO 2 is
taken up in the seawater throughout the year in Tokyo Bay. The bay becomes a sink even when
considering the annual average of CO 2 gas exchange over its entire area (ca. 140 g CO 2 /m
2
/year).
(Modified from Kubo et al. 2017)
which fluctuations in CO 2 concentration were measured continuously at various
time scales, such as 24 h or throughout the year. Therefore, these statistics include
large uncertainty and bias. In particular, in low-salinity waters, total alkalinity is
generally low and the buffer effect of carbonate chemistry is weak, causing high
temporal variability in CO 2 in water.
11 CO 2 Uptake in the Shallow Coastal Ecosystems Affected…