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A study finds tension between mitigating sea-level rise and reducing the rate of temperature change through solar-radiation management. The rapid warming that would occur if solar-radiation management were to be phased out is shown to depend critically on timescales, potentially committing future generations to its long-term use once started.
Global climate models cannot resolve hailstorms explicitly, so it is unclear whether a warmer climate will change hailstorm frequency and intensity. Now a study using high-resolution model simulations capable of resolving hail indicates the near-elimination of hail at the surface in future simulations for Colorado—a major centre of hailstorms in the United States.
This study combines previous work on quantifying the greenhouse gas value of ecosystems with models of the effects of biophysical processes to produce an integrated metric of climate-regulation services. The approach is used to quantify climate-regulation values of natural and managed ecosystems across the Western Hemisphere.
A long-term field study establishes a link between reduced snowfall and bird and tree declines in montane Arizona. Excluding elk from experimental sites reversed these declines and also lowered nest predation. This experiment shows that climate change, operating through increased winter herbivory, can negatively affect diverse species occupying such ecosystems.
With expertise in coastal resources and an interdisciplinary background in marine biology and social science, Tim Daw joined a team of natural and social scientists to study how coastal communities are affected by the impacts of climate change on coral reefs.
As Australia anticipates its carbon tax, Anna Petherick contends that of the world's dirtiest economies, this nation is leading the way in the design of policies to price emissions.
