Dr. Richard Engelen is Deputy Director of the Copernicus Atmosphere Monitoring Service and an expert in remote sensing and data assimilation of atmospheric composition. He obtained his PhD at Utrecht University before working for six years at Colorado State University. Since 2002, he has worked at ECMWF on various projects related to atmospheric composition modelling and data assimilation. As such, he has been part of the development and implementation of the Copernicus Atmosphere Monitoring Service from the beginning. He is an internationally respected scientist on global atmospheric composition issues and has around 50 international peer reviewed publications to his credit. He is a member of several international scientific and advisory committees, including for the European Commission and the European Space Agency.