The impact of climate changes on tourism

motto: "Danger has different meanings for different people. When we have scientific proofs which are so clear and tell us that we have to find solutions for this issue, for me it seems a terrible spent of time the narrow way the problem was defined", Yvo de Boer, Director of the Secretariat for Climate Changes of the U.N.O.. The global warming, of the atmosphere undoubtedly will affect not only the other components of the Earth environment, but also human society. The tourism maintains really ambiguous relations with the weather phenomena because it relies on the deterioration of the human existence, regarded as an economic activity (e.g. the abundant snow may provoke traffic-jams and it requires expensive efforts in order to unjam them, but at the same time it guaranties the quality of tourism, which is vital in the quality of tourism, which is vital in the case of the well-known Alps resorts when it comes to winter sports). The need to control the weather chanaes that have a negative impact on tourism leads to, on the other hand, to making the touristic infrastructure more and more artificial and extremely expensive (climate control systems, snow making machines, exotic plants aneant to make the environment more attractive etc.). The prediction of the weather changes becomes more and more important, especially in the cases where it is expressed by different phenomena, such as risks and natural disasters (tornadoes, the terrible tsunami from December 2004, which resulted in over 500.000 dead persons, floods, frost phenomena etc.) the frequency of which cant be exactly predicted, having some negative consequences on tourism. The weather comfort in tourism differs from the one that is expressed in other activities, a problem which is presented in detail in this paper.