German climate observing systems / German Climate Observing Systems : inventory report on the Global Climate Observing System (GCOS) / Editorial team: Stefan Rösner, Maarit Roebeling, Andrea Kreis, Grit Steiner, Gabriele Engel (co-ordination English translation). Offenbach am Main : Selbstverlag des Deutschen Wetterdienstes, May 2023