In collaboration with the United Nations Office for Outer Space Affairs (UNOOSA), the 3rd DLR Conference on Climate Change (CCC 2020) will serve as a platform for - the communication and networking between the participants regarding state-of-the-art approaches in the field Atmospheric Research for Understanding and Mitigating Climate Change - the discussion of new and improved techniques with regard to environmental aspects and statutory demands and provisions - the discussion and recommendation of future directions for atmospheric research for understanding and mitigating climate change