Arona Diedhiou is a Research Director at the IRD, based at the University Felix Houphouët Boigny (Abidjan, Ivory Coast), and co-Director of the LMI NEXUS on "Climate Services and the Climate-Water-Agriculture-Energy Nexus in Africa." He is a specialist in the African Climate System. From 2007 to 2012, he led the FSP RIPIECSA program from the Ministry of Foreign and European Affairs, supporting interdisciplinary and participatory research projects on climate-ecosystem-society interactions to assist in the development of adaptation and mitigation policies in Africa. From 2014 to 2018, he was a member of the Scientific Committee of the CGIAR Research Program on "Climate Change, Agriculture, and Food Security." Since 2018, he has served as the Chairman of the Scientific and Advisory Committee of WASCAL, funded by the German Ministry of Research (BMBF) to produce climate services aimed at reducing climate vulnerability and supporting the implementation and evaluation of adaptation and mitigation policies. Since 2019, he has been the Chairman of the One Planet Fellow program, which aims to form a network of 630 researchers from Africa and Europe working on climate change adaptation in Africa, with a particular focus on the link between agriculture and climate change and gender. As an IPCC expert, he is a lead author of the special report on the impacts of global warming of 1.5°C (2019) and an editor-evaluator for the upcoming IPCC report (2023).