Chemical Speciation Modelling in Seawater to Meet 21st Century Needs

Session ID#: 86253

Session Description:
Concentration-based equilibrium (stability) constants are widely used to estimate trace element speciation and solve the marine carbonate system. Such constants are strictly only valid at a single salinity and in solutions with seawater stoichiometry. In contrast, models that estimate activity coefficients, and use them together with thermodynamic equilibrium constants, can account for concentration-dependent effects of individual solutes on speciation. This broadens their application to natural waters that depart from standard seawater composition. SCOR Working Group 145 is producing chemical speciation models for chemical oceanographers, which include uncertainty estimates, that are based upon this approach. Join us to test drive the draft software, provide feedback, and share ideas for further development and novel applications to facilitate adoption by the broader oceanographic community.
Submitter:  Heather M Benway, Woods Hole Oceanographic Inst., Woods Hole, MA, United States
Onsite Contact:  Heather M Benway, Woods Hole Oceanographic Inst., Woods Hole, MA, United States
Presenter:  Heather M Benway, Woods Hole Oceanographic Inst., Woods Hole, MA, United States

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