Özet:

Today, limited resources are decreasing/depleting with the increase in the human population living on Earth. The increased human population brings with it various problems. Different events cause important climate events at the global level, such as the decrease or depletion of water resources with the increase in demand, damage to the ecosystem, health risks, and deterioration of biological diversity. Due to the use of fossil fuels, the formation of GHG (greenhouse gas) emissions and global warming cause significant climate changes. Climate change causes the restriction of environmental and vital activities, the increase of natural disasters and the extinction of species. This study aimed to evaluate the climate change performance of G20 countries which emit more than 75% of the world’s GHG emissions for the period of 2019-2023, using MCDM methods. An objective method, LOPCOW, was used to assign weights while SPOTIS, WISP, and RMSVC methods were used to determine the climate change performances of G20 countries. The findings showed that among G20 countries, the highest performance was found in United Kingdom and India, while Saudi Arabia, United States and Russia were found in the last ranks. The study is thought to contribute to the literature due to reasons such as the lack of a study using the proposed model in the literature and the fact that the SPOTIS and RSMCV methods are being tested for the first time in the domestic literature.

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