[2] He completed his PhD in climate physics at Swiss Federal Institute for Technology (ETH Zurich) in 2013 under the supervision of Prof. Reto Knutti on the topic of uncertainties in low greenhouse gas emissions scenarios.
[7] In 2018, he joined the Grantham Institute – Climate Change and Environment at Imperial College London.
[2][6] Rogelj publishes on international climate agreements such as the Copenhagen Accord[9] or the Paris Agreement,[10] carbon budgets,[11][12] emission pathways that limit global warming to 1.5 °C[13][14] and 2 °C,[15] net zero emissions targets,[16] and linkages between climate, sustainable development, and justice.
[19] He serves as a lead author on the annual Emissions Gap Reports from the United Nations Environment Programme (UNEP) that provide annual updates on the gap between country pledges and emission reductions necessary to meet the goals of the Paris Agreement.
[30] Rogelj is a Clarivate Web of Science Highly Cited Researcher in 2019[31] and 2020,[32] recognizing the world's most influential researchers of the past decade, and was ranked 31st in The Reuters Hot List of the World's Top Climate Scientists.