Upper tropospheric water vapour and its interaction with cirrus clouds as seen from IAGOS long-term routine in-situ observations

Andreas Petzold, Martina Krämer, Patrick Neis, Christian Rolf, Susanne Rohs, Florian Berkes, Herman G.J. Smit, Martin Gallagher, Karl Beswick, Gary Lloyd, Darrel Baumgardner, Peter Spichtinger, Philippe Nédélec, Volker Ebert, Bernhard Buchholz, Martin Riese, Andreas Wahner