SCOR WG 145: Chemical Speciation Modelling in Seawater to Meet 21st Century Needs

The aim of the Working Group is, over a period of years, to develop a user-friendly comprehensive chemical speciation model of seawater and related natural waters, and the pH buffers used to define the marine pH scale. Full details of our activities, and the membership of the Working Group (including our associate members), can be found on the WG 145 website.

Our project involves the following elements:

1. Development of the chemical speciation model, and associated software, which is led by Pitzer model specialist Simon Clegg collaborating with David Turner (University of Gothenburg) who is Chair of WG 145.
2. Experiments led by Andrew Dickson at Scripps Institution of Oceanography, working with national metrology institutes in Germany, France, and Japan, and with GEOMAR in Germany.
3. Promotion of close connections with the user community of marine scientists, led by Heather Benway, the Executive Officer of the NSF's Ocean Carbon & Biogeochemistry Program.

How far have we got? The demonstration programs on this site are still "work in progress". Eventually, the speciation models will be available as both online tools, and free-standing programs and routines. The underlying code is Fortran, but wrappers will be created for Python, Matlab and Excel. The model will include a full treatment of uncertainties. If you want to learn more, please contact either Simon Clegg or David Turner.

Our work is supported by grants from the Natural Environment Research Council in the UK, and the National Science Foundation in the USA.

The Chair of WG 145, and NERC/NSF Project Investigators

	David R. Turner Department of Marine Sciences University of Gothenburg Sweden E-mail: david.turner@marine.gu.se		Heather Benway Executive Officer, Ocean Carbon & Biogeochemistry Program Woods Hole Oceanographic Institution USA E-mail: hbenway@whoi.edu
	Simon L. Clegg School of Environmental Sciences University of East Anglia UK E-mail: s.clegg@uea.ac.uk		Andrew G. Dickson Scripps Institution of Oceanography USA E-mail: adickson@ucsd.edu

Full Members of SCOR Working Group 145