Policy makers and stakeholders are increasingly demanding impact assessments
which produce policy-relevant guidance on the local impacts of global climate
change. The 'Regional Climate Change Impact and Response Studies in East Anglia
and North West England' (RegIS) study developed a methodology for stakeholder-
led, regional climate change impact assessment that explicitly evaluated local
and regional (sub-national) scale impacts and adaptation options, and cross-
sectoral interactions between four major sectors driving landscape change
(agriculture, biodiversity, coasts and floodplains and water resources). The
'Drivers-Pressure-State-Impact-Response' (DPSIR) approach provided a structure
for linking the modelling and scenario techniques. A 5x5 km grid was chosen for
numerical modelling input (climate and socio-economic scenarios) and output, as
a compromise between the climate scenario resolution (10x10 km) and the detailed
spatial resolution output desired by stakeholders. Fundamental methodological
issues have been raised by RegIS which reflect the difficulty of multi-sectoral
modelling studies at local scales. In particular, the role of scenarios, error
propagation in linked models, model validity, transparency and transportability
as well as the use of integrated assessment to evaluate adaptation options to
climate change are examined. Integrated assessments will provide new insights
which will compliment those derived by more detailed sectoral assessments
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