Career 

• Senior Lecturer, Swansea University (2007-present).
• Visiting Scholar, Laboratory of Tree-Ring Research, University of Arizona, USA (2011).
• NERC Peer Review College (2008-present).
• Director of Postgraduate Studies, School of the Environment and Society (2009-2011).
• Lecturer, Swansea University (2003).
• Research Officer, Swansea University (2003).
• Head of Radiocarbon Dating, CSIR Environmentek, South Africa (2000).
• Visiting Scholar, Laboratory of Tree-Ring Research, University of Arizona, USA (2000).
• Research Officer, Swansea University (1998).
• Research Assistant, Godwin Inst. for Quaternary Research, University of Cambridge (1994).
• Research Assistant, Department of Archaeological Sciences, University of Bradford (1991).
• Synthetic Organic Chemist, Neuroscience Research Centre, Merck, Sharp & Dohme (1989).

PhD Supervision

Primary supervisor 

1.  Rory Clisby (started 2010). ”Is there a carbon dioxide fertilization effect in high elevation bristlecone pines?”

2.  Tommy Wils (awarded 2009). “Isotope dendroclimatological studies on Juniperus procera from Ethiopia: towards a reconstruction of Blue Nile baseflow.” Currently employed at Rotterdam University of Applied Sciences and Fontys University of Applied Sciences, The Netherlands.

3.  Rochelle Campbell (awarded 2009). “Dendroclimatology in central Sweden.”

4.  Roderick Bale (awarded 2008). “Climatic reconstruction of the last 1000 years from bristlecone pine tree rings at Blanco, White Mountains, California, USA.” Currently employed at the University of Wales Trinity Saint David, Lampeter, Wales.

Co-supervisor 

1.  Jamie Williams (with Dr Sietse O. Los; started 2008). “Effect of changes in plant water use efficiency on the hydrology of a watershed.”

2.  Ewan Woodley (awarded 2010). “Reconstructing the climate of Scotland using stable carbon and oxygen isotopes in tree rings.” Currently employed at the University of Exeter.