The agreement
The agreement enters into effect ahead of the 2024/2025 winter season and is set for an initial period of five years with the possibility of automatic renewal. It paves the way for a broad scope of joint activities and initiatives that bring the science-based data and expertise of the WMO and its National Meteorological and Hydrological Services to the heart of snow sports and mountain tourism, an area in which the impact of climate change is becoming increasingly evident.
Every year, the two parties will define the slate of initiatives to be implemented, and the first ones are already planned for the next few weeks: on 7 November, the partnership will host a webinar for all 137 National Ski Associations, as well as venue managers and event organizers, on climate change and its potential impact on snow and ice and snow sports, including an overview on advancing forecasting tools in support of optimizing snow management around ski resorts.
Changing snow cover
A number of studies have explored the impact of climate change on winter sports and tourism, as these are substantial components of the economy of mountainous and Nordic regions:
• A study by French and Austrian scientists published in 2023 in Nature Climate Change that focused on 2,234 ski resorts in 28 European countries found that “without snowmaking, 53% and 98% of these resorts are projected to be at very high risk for snow supply under global warming of 2 °C and 4 °C, respectively.” The study highlighted the broader environmental and climate challenges including the need to limit global warming through a reduction of greenhouse gas emissions.
• Switzerland - which hosts both FIS and WMO – has conducted detailed Climate Change Scenarios: Alpine glaciers have lost about 60% of their volume since 1850. Moreover, at altitudes below 800 meters, the number of days with snowfall has halved since 1970, with precipitation falling as rain rather than snow, according to the Swiss federal office of meteorology and climatology MeteoSwiss.
• Fifty years ago, the zero-degree level sat at around 600 m above sea level. Today, with winters becoming warmer, the level sits at around 850m. The Swiss Climate Change Scenarios CH2018 predict that the zero-degree level will climb a further 400‒650m by 2060 without climate change mitigation. This will take it to an altitude of around 1,300–1,500 m.