The goal of CALIS is to monitor vegetation condition and to evaluate the impact of climate hazards on both agriculture production and environment. CALIS will warn the end-users, e.g. insurance companies, when crop damage arises, and help them in evaluating compensation for farmers who have been hit. CALIS target calamities are: night frost in early spring, drought in late spring and early summer, heat excess. Impact of climate hazards on vegetation will be assessed through use of meteorological and Earth Observation satellite data, as well as complementary information such as agricultural statistics, tables of local phenological stages, and ground data measurements. A specific methodology has been set for each climatic hazard. The project has been very much a collaborative, interdisciplinary one. End-users have been responsible for defining the goals, selecting meteorological events and checking the results. Scientists provided expertise in selecting and tuning the methods, while value added companies brought their knowledge and experience in the thematic area to specify the system, to generate and interpret the products. Before the end of 1998, the system will be operational for assessing frost damage over the test sites (France, Greece and Spain).