Uncertainty in climate change impacts on basin-scale freshwater resources – preface to the special issue: the QUEST-GSI methodology and synthesis of results 1Department of Geography, University of Sussex, UK
24 Mar 2011
2Department of Geography, UCL, UK
3Climate Research Unit, University of East Anglia, UK
4Department of Geography, University of Otago, New Zealand
5Walker Institute for Climate System Research, University of Reading, UK
Received: 23 July 2010 – Published in Hydrol. Earth Syst. Sci. Discuss.: 01 October 2010 Abstract. This paper presents a preface to this Special Issue on the results of the
QUEST-GSI (Global Scale Impacts) project on climate change impacts on
catchment scale water resources. A detailed description of the unified
methodology, subsequently used in all studies in this issue, is provided.
The project method involved running simulations of catchment-scale hydrology
using a unified set of past and future climate scenarios, to enable a
consistent analysis of the climate impacts around the globe. These scenarios
include "policy-relevant" prescribed warming scenarios. This is followed by
a synthesis of the key findings. Overall, the studies indicate that in most
basins the models project substantial changes to river flow, beyond that
observed in the historical record, but that in many cases there is
considerable uncertainty in the magnitude and sign of the projected changes.
The implications of this for adaptation activities are discussed.
Revised: 14 February 2011 – Accepted: 08 March 2011 – Published: 24 March 2011
Citation: Todd, M. C., Taylor, R. G., Osborn, T. J., Kingston, D. G., Arnell, N. W., and Gosling, S. N.: Uncertainty in climate change impacts on basin-scale freshwater resources – preface to the special issue: the QUEST-GSI methodology and synthesis of results, Hydrol. Earth Syst. Sci., 15, 1035-1046, doi:10.5194/hess-15-1035-2011, 2011.