Keywan Riahi

TL;DR: In this article, the authors compared emission pathways and abatement costs for fixed and time-dependent variants of the Global Temperature Change Potential (GTP) with those based on GWPs, for a policy goal of limiting the radiative forcing to a specified level in the year 2100.

TL;DR: The United Nations established global targets for energy access, renewable energy and energy efficiency in the context of sustainable development and eradication of poverty, as well as climate risk mitigation.

TL;DR: In this article, the authors show typical values for these indicators for different carbon budgets, using the recently compiled IPCC scenario database, and discuss how these vary as a function of non-CO2 forcing, energy use and policy delay.

TL;DR: In this article, the authors analyzed a multi-IAM ensemble of long-term energy and greenhouse gas emissions scenarios and found that stringent climate policies consistent with a 2°C climate change target would require a considerable upscaling of investments into low-carbon energy and energy efficiency, reaching approximately $45 trillion (range: $30-$75 trillion) cumulative between 2010 and 2050, or about $1.1 trillion annually.