a new version of integrated assessment model merge

the optimization model for evaluating regional and global effects of greenhouse gases reductionpolicies named merge is an actively usable tool for studying some aspects of the problem of climate change.it is first of all destined for the quantitative estimation of emission trajectories and results of applyingabatement measures. in the paper, the emphasis is on the adaptation of the integrated assessment modelmerge to the modern state of the world and regional economy and on the analysis of possibilities of russia’sparticipation in some kyoto-type initiatives on greenhouse gases emission reduction under differentassumptions on the dynamics of regional economic-energetic indices. calculations with the merge modeldemonstrated the attainability of the national emission targets: stabilizing the carbon dioxide emissions at 75per cent of the 1990 level by 2020 with further reducing to 70 per cent by 2030. some trends in the structureof energy sector and fossil fuel exports are also analyzed.