This report has been prepared with the contributions of J. Bassier, M. Bonell, P. Döll, A. Fraser, W. Fröhlich, B. Fekete, H. Grassl, M. Gröning, P. Jones, J. Leese, H.T. Mengelkamp, P. Reichert, B. Rudolf, M. Shiiba, C. Vörösmarty. The participants of the meeting wish to thank the Deutsche Wetterdienst for hosting the meeting in a highly efficient manner. Special thanks are also extended to the Director and the staff of the Forschungsstation Geisenheim for making available their excellent facilities and to educate the participants in the basics of oenology both in theory and praxis.