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| Titel |
Carbon Dioxide in the Gulf of Trieste |
| VerfasserIn |
D. Turk, V. Malačič, M. D. DeGrandpre, W. R. McGillis |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250031629
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| Zusammenfassung |
| Coastal marine regions such as the Gulf of Trieste (GOT) in the Northern Adriatic Sea serve
as the link between carbon cycling on land and the ocean interior and potentially
contribute large uncertainties in the estimate of anthropogenic CO2 uptake. This
system may be either a sink or a source for atmospheric CO2. Understanding the
sources and sinks as a result of biological and physical controls for air-sea carbon
dioxide fluxes in coastal waters may substantially alter the current view of the global
carbon budget for unique terrestrial and ocean regions such as the GOT. GOT is a
semi-enclosed Mediterranean basin situated in the northern part of Adriatic Sea. It is one
of the most productive regions in the Mediterranean and is affected by extreme
fresh river input, phytoplankton blooms, and large changes of air-sea exchange
during Bora high wind events. The unique combination of these environmental
processes and relatively small size of the area makes the region an excellent study
site for investigations of air-sea interaction, and changes in biology and carbon
chemistry.
Here we investigate biological (phytoplankton blooms) and physical (freshwater input
and winds) controls on the temporal variability of pCO2 in the GOT. The aqueous CO2 was
measured at the Coastal Oceanographic buoy VIDA, Slovenia using the SAMI CO2 sensor.
Our results indicate that: 1) The GOT was a sink for atmospheric CO2 in late spring of 2007;
2) Aqueous pCO2 was influenced by fresh water input from rivers entering the GOT and
biological production associated with high nutrient input; 3) Surface water pCO2 showed
a strong correlation with SST when river plumes where not present at the buoy
location, and reasonable correlation with SSS during the presence of the plume. |
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