Multi-scale participatory indicator development approaches for climate change risk assessment in West Africa

A multi-scale participatory process was used to extend the classical approach of indicator development for risk assessment in West Africa. The approach followed a step-wise procedure to develop Indicator Reference Sheet based on conceptual risk assessment framework and combined with knowledge of local experts iteratively selected through snowball approach. Existing risk assessment frameworks being modified to account for multiple hazards were merged into a coherent framework to categorize the components of risks. Local experts including at risk populations were constituted into technical working groups to elicit important processes shaping risks at multiple spatial scales. The results showed that more than half of the designated local level indicators and over two-third of macro scale indicators are rarely used in present risk assessments in the region. Additionally, although an indicator may be common to three countries, their differential rankings will result in differences in explaining the risks faced by people in different societies. However, there were indicators that were unique to each country and this has wider implications for risk assessment that uses common indicators for different countries for comparative purposes. An important output of the study is the identification of locally and nationally evaluated indicator sets for assessing the risk to natural hazards. While it has neither been optimal to completely neglect classical approaches nor to take as an absolute fact opinions from local experts, more emphasis should be paid to the latter in risk assessment that is supposed to serve the very people on whose behalf the assessment is done.