Jenni Barclay¹, David M Pyle², Richard E A Robertson³, M. Teresa Armijos⁴, Roger Few⁴, Jeremy Phillips⁵ and STREVA Project Team, (1)University of East Anglia, School of Environmental Sciences, Norwich, United Kingdom, (2)University of Oxford, Department of Earth Sciences, Oxford, United Kingdom, (3)Univ West Indies, St Augustine, Trinidad and Tobago, (4)University of East Anglia, School of International Development, Norwich, United Kingdom, (5)University of Bristol, Bristol, United Kingdom