This technical report describes a methodology for the economic assessment of future climate change impacts and adaptation at the global scale, but taking explicitly into account the spatial dimension being based upon gridded information. The approach can thus be applied to the estimation of climate impacts and adaptation costs with high spatial resolution for large number of climate and socioeconomic scenarios. This document summarizes the general methodology, which will be described with greater detail in a dedicated paper under preparation1, to then develop an application to characterize climate.