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| Titel |
Autonomous pH and alkalinity sensors for the characterization of the carbonate system in coastal areas |
| VerfasserIn |
Steffen Aßmann, Carsten Frank, Wilhelm Petersen, Arne Körtzinger |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250079890
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| Zusammenfassung |
| The comprehensive documentation of the rapid changes in the carbonate chemistry due to the
increased uptake of CO2 from the atmosphere is very important. The CO2 forms carbonic
acid in seawater and leads thus to the phenomenon of ocean acidification causing expansive
follow-ups for the ecosystem in the oceans. However, there are areas such as shelf seas and
other coastal areas including river deltas and estuaries having a significant contribution to the
CO2 budget which show large natural variability where the direction and the magnitude
of the CO2 flux is varying and often even unknown. This lack of knowledge is
caused by the high variability of coastal regions which cannot be sufficiently covered
using research cruises and discrete samples due to the limiting effect of high costs
for ships, staff, and time. The relevant processes and rates, however, can only be
determined with knowledge of the fully characterized carbonate system using high
spatial and temporal resolution data. Here we present fully automated systems for
the determination of the pH value and the total alkalinity providing high quality
data for a comprehensive determination of the carbonate chemistry in seawater. |
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