AGU member since 1989. Professor, Swansea University, Swansea, Wales, U.K.
Volunteer experience: I have been involved with the IPCC for the Fourth and Fifth Assessment reports. For the Fourth Assessment I was an expert reviewer for Working Group 2, and for the Fifth Assessment I was a Lead Author on the Cryosphere: Observations chapter for Working Group 1. I have a lot of experience on editorial boards and as associate / scientific editor for five journals including JGR (Earth Surface), Quaternary Science Reviews, and Annals of Glaciology.