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  • Floating ice shelves that fringe Antarctica are at risk from warming ocean water and from above by warming air. Work now reveals that snow accumulation on ice shelves can minimize surface melt and ponding, but that future atmospheric warming will likely overpower this protection that snow provides, leaving ice shelves vulnerable to collapse.

    • Lauren M. Simkins
    News & Views
  • Melt ponding is an important process for the stability of ice shelves. Here the authors estimate the temperature thresholds at which melt ponding emerges over Antarctic ice shelves and find that cold and dry ice shelves are more vulnerable to melt ponding than expected.

    • J. Melchior van Wessem
    • Michiel R. van den Broeke
    • Stef Lhermitte
    Article Open Access
  • Statistical analysis of a climate institutions dataset has identified four national models of climate governance used across countries with high emissions. These models are associated with the climate policy ambition and performance of each country. This analysis reveals that the effectiveness of climate policymaking could be strengthened by building climate institutions.

    Research Briefing
  • National climate institutions could greatly impact the process of policy design and implementation. This analysis identifies four models of climate governance for major emitters, estimates their policy ambitions and performance, then shows how they are related to macro features.

    • Johnathan Guy
    • Esther Shears
    • Jonas Meckling
  • A changing climate is altering vegetation phenology and probably impacts drought frequency and severity. Changes in vegetation phenology have some unexpected consequences on the trajectories of drought recovery.

    • Lixin Wang
    News & Views
  • How the spatial structures of large storms will change is not well resolved in most climate models. Here the authors use high-resolution models to show that winter storms become sharper under warming because precipitation in the storm centre increases more strongly than the storm area.

    • Xiaodong Chen
    • L. Ruby Leung
    • Mark Wigmosta
  • Reducing methane emissions from fossil fuels, agriculture and waste is key to achieving climate goals. Technological advances and scientifically grounded feasibility assessments of mitigation initiatives may illuminate the path to success.

  • The Hunga Tonga–Hunga Ha’apai eruption in January 2022 injected large amounts of water vapour into the atmosphere. Here, the authors show that this can cause additional warming over the next years, which increases the likelihood of exceeding 1.5 °C warming over a short time period.

    • Stuart Jenkins
    • Chris Smith
    • Roy Grainger
    Brief Communication
  • Rapid growth of AI could lead to more inventions and innovations in climate actions, yet evidence of this connection is lacking. The use of large-scale patent data and automated techniques helps elucidate trends in climate-related artificial intelligence inventions for different technology areas.

    • Vilhelm Verendel
    Article Open Access
  • Snow is an important component of the environment and climate of mountain regions, but providing a long-term historical context for recent changes is challenging. Here, the authors use ring-width data from shrubs to show that recent snow loss in the central Alps is unprecedented over the last 600 years.

    • Marco Carrer
    • Raffaella Dibona
    • Michele Brunetti
    Article Open Access
  • High uncertainty exists in the projected climate change impacts on the Nile’s economies and water-dependent sectors. Under these uncertainties, managing the Grand Ethiopian Renaissance Dam cooperatively and adaptively can produce economic and water management benefits for Ethiopia, Sudan and Egypt.

    • Mohammed Basheer
    • Victor Nechifor
    • Julien J. Harou
    Policy Brief
  • Partisan politics is characterized by pejorative generalizations across opposition groups, but, similar to the groups being derogated, not all partisans are the same. Understanding the nature of partisan opposition to climate policy may help promote bipartisan projects to mitigate climate change.

    • Alexa Spence
    • Charles A. Ogunbode
    News & Views
  • Partisan polarization plays a key role in shaping climate action in the United States. By identifying positive and negative elements within party identities, the authors expand conceptualizations of Republican-Democrat to explore how partisanship relates to policy support and behavioural intentions.

    • Adam P. Mayer
    • E. Keith Smith