Atmospheric Observations in the Perspective of Changing Climate and Environment, and the Synergy Between Ground-Based, Airborne and Space-Based Measurements

The detection of atmospheric changes requires long-term observations, from ground and space. The exploitation of the synergy between all types of measurements is essential for getting a full understanding of the complex system of the atmosphere, on the different temporal and spatial scales involved. At present it is demonstrated unambiguously that the Earth atmosphere is changing, and international regulations to counteract these changes have been implemented. The full global picture however is still to be unravelled. This contribution will introduce some remote sensing ground-based observation methods and highlight some aspects of atmospheric changes, but aiming in no way at completeness. A large amount of references is included for guiding the reader to the literature.