La grêle est le phénomène météorologique qui occasionne les plus graves dégâts en Suisse. Elle affecte particulièrement l’agriculture, les bâtiments et les véhicules. La grêle est un phénomène météorologique complexe, provoqué par des tempêtes aux caractéristiques très spécifiques. Les tempêtes et la survenue de la grêle sont difficiles à simuler et leur prévision est notoirement incertaine. Le fait que la grêle soit un phénomène très localisé et de courte durée complique la vérification des prévisions. Pour en savoir plus, consultez ces articles Flash: La recherche sur la grêle et les dommages dus à la grêle en Suisse ; Pourquoi les risques de dégâts dus à la grêle augmentent

Les modèles d’IA prennent une importance croissante pour les prévisions météorologiques et la détection précoce des risques naturels. Pour entraîner ces modèles, il faut d’énormes quantités de données climatiques et d’observation de la Terre. Au cours des derniers mois, l’ETH Zurich a donc copié des données librement accessibles de la NASA et les a transférées au Centre national suisse de supercalcul (CSCS) à Lugano. En savoir plus

 ©   analogicus / Pixabay

Over the past five years, the world has experienced some of its hottest years on record, and meteorologists are warning that El Niño – a periodic warming of Pacific Ocean surface waters – could drive a new series of extreme weather events in 2026 and 2027. This comes as the adoption of air conditioning around the world has already been accelerating – the result of rising incomes in many economies with hot climates and record-breaking heatwaves in regions that previously had only limited cooling demand. As extreme heat events become more frequent and widespread, perceptions of cooling are shifting, driving more consumers to consider purchasing an air conditioner (AC). At the same time, falling unit prices and elevated inventories across the supply chain are lowering barriers to AC adoption, suggesting that the number of households purchasing their first AC unit will reach new highs in the years ahead. Find out more

 ©   European Commission

The new proposal ensures that the EU ETS contributes to the economic investments, resilience and competitiveness of the Union while delivering on the economy-wide 2040 climate target, through changes in four key dimensions. It provides the flexibilities and incentives to the industry to choose the cleanest path, decarbonised and be competitive in Europe. Read more about the changes proposed for the EU Emission Trading System here.

The First Order Draft (FOD) of the Working Group I contribution to the IPCC Seventh Assessment Report (AR7) will soon be open for review. The expert review of the First Order Draft will take place from 10 August to 2 October 2026 midnight (GMT+2).

If you are interested in reviewing the FOD please register before 25 September 2026 midnight. Find out more

For the second time, the University of Bern is launching the “Ready to Reduce” ideas competition to support concrete projects aimed at reducing greenhouse gas emissions. The submission date is possible 30 June 2026. They are looking for projects ready for implementation that contribute to reducing greenhouse gases in the following areas: Reuse and circular economy, energy efficiency and energy-saving measures, sustainable mobility, resource efficiency in laboratories and research infrastructures. The deadline for submitting project ideas is 30 September 2026. Read more here

Le Prix Expo de l’Académie suisse des sciences naturelles (SCNAT) distingue chaque année une exposition remarquable en sciences naturelles en Suisse, en récompensant l’excellence scientifique, la qualité muséographique et la capacité à susciter l’intérêt du grand public. Le Prix est remis annuellement depuis 2003 par l’Académie suisse des sciences naturelles et est doté d’un montant de CHF 10’000. Les candidatures sont désormais ouvertes à début septembre. En savoir plus

La statistique de la Suisse sur le CO₂ présente l’évolution des émissions de CO₂ dues aux combustibles et aux carburants et met ainsi en évidence l’efficacité des mesures de politique climatique dans le domaine de l’énergie. Étant donné que la consommation d’énergie de chauffage dépend fortement des conditions météorologiques, cette statistique montre également l’évolution des émissions de CO₂ générées par les combustibles, corrigées des variations météorologiques. Elle est mise à jour chaque année sur la base des données récoltées jusqu’à l’année précédente. En savoir plus

The focus of this Climate Action Coalition report is how a narrative can be shaped, and frame that future pathway, that will ensure that communities and countries across the world will make the same choice, towards a recognition that AI must play a crucial role not merely in the climate conversation, but as an emerging crucial weapon in the fight against climate change, as well as a key tool in the adoption at pace of the energy transition. AI is the future: let us ensure that this future is one which works for people and planet, for the benefit of all. Find out more

The Carbon Border Adjustment Mechanism (CBAM) levels carbon costs between EU and imported products but does not address export carbon leakage. As free allocation under the EU ETS is phased out, EU exporters face rising carbon costs, potentially reducing competitiveness in markets with weaker climate policies. This paper develops an assessment framework based on five criteria and applies it to four policy options: export rebates, export-linked free allocations, (sub)sectorspecific adjustments to the free allocation phase-out, and targeted decarbonisation support. The analysis highlights trade-offs between leakage protection, decarbonisation incentives, targeting, financing, and administrative complexity, which are unique to each option. Find out more

The Eastern Mediterranean is widely recognised as one of the world's climate change hotspots and is warming significantly faster than the global average. Its marine environment - one of the region’s most valuable shared resources - is increasingly exposed to interacting pressures from rising temperatures, marine heatwaves, sea-level rise, ocean acidification, altered circulation patterns, declining oxygen concentrations, invasive species, and growing anthropogenic pressures. These changes threaten biodiversity, ecosystem functioning, fisheries, aquaculture, coastal infrastructure, tourism, cultural heritage, and broader socio- economic resilience across the region. Find out more