Albrecht von Bargen is physicist by education and holds a Ph.D. in molecular physics, currently working as Senior Project Officer at the German Space Agency's Earth Observation Department at DLR. His responsibilities cover climate-related Earth Observation projects including the link to European and International Organizations. He serves as DLR delegate to the Joint CEOS / CGMS Working Group on Climate since about 10 years and fills the chair position from 2020 to 2022. In addition, he is member of the CEOS Working Group on Cal/Val which he chaired from 2014 until 2016. He looks back on around 25 years EO technology experience with sharing this experience in related task teams at WMO and GCOS, as well.