This document provides information about the Copernicus Climate Change Service (C3S) and Copernicus Atmosphere Monitoring Service (CAMS). It describes how C3S and CAMS use satellite observations, models, and reanalysis to provide data and services related to climate change and atmospheric composition. It also discusses the development of a potential anthropogenic CO2 emissions monitoring system building upon CAMS and C3S modeling capabilities with complementary satellite and in-situ observation components.