ABSTRACT
This chapter describes the research project that aims at improving the knowledge base on which mitigation strategies can be based. The goals of emissions reductions, so as to maintain climate change within manageable boundaries, at national, supranational or international scales have become more stringent over time. Modelling is a second step, preparing an insight into future emissions, which is required for long term policies such as climate change policies. Models are all the more present in the tourism and transport literature as assessing transport requires a strong component of quantification. Forecasting tends to predict diffi culties or even doomsday, for example through business as usual scenarios, whereas backcasting aims to show what could be done to avoid such outcomes. Dealing with subcategories inside the panel-which is indispensable to ‘unpack’ tourism-implies diminishing the reliability of the results. The survey on same day trips only started in 2004 as did the inclusion of foreign residents in the SDT.
