The study carried out by Bern University's Research Institute for Leisure and Tourism concludes winter revenues will drop 30% by 2030 with temperatures rising a maximum of 1.8 degrees Celsius in winter and 2.6C in summer over the coming 20 years. However the study indicates summer business will increase and bridge the income gap for many mountain resorts in the region which include Gstaad, Interlaken, Grindelwald, Wengen, Kandersteg and Interlaken.

The report indicates that winters like the one just passed will be the norm by 2030 with the snow level rising to 1,500m meaning skiing at about a third of the canton's lower ski areas will no longer be economically viable. But equally, summers like that last year when temperatures hit record highs in Switzerland leading to a boom in business for lift companies as city dwellers escaped to the cooler mountains, will also be the norm.

The greatest concerns highlighted were for water shortages and the thawing of ice holding together high Alpine areas leading to natural disasters such as riock sies blocking access road and rail links and cutting off power supplies.