• Sea-level rise in twentieth century faster than in any previous century

    Global sea level rose faster in the twentieth century than in any of the twenty-seven previous centuries, according to a new study. Moreover, without global warming, global sea level would have risen by less than half the observed twentieth century increase and might even have fallen. Instead, global sea level rose by about 14 centimeters, or 5.5 inches, from 1900 to 2000. This is a substantial increase, especially for vulnerable, low-lying coastal areas.

  • New tool for coastal planners preparing for sea level rise

    Scientists have developed a new model to help coastal planners assess the risks of sea level rise. Put to use on a global scale, it estimates that the oceans will rise at least twenty-eight centimeters on average by the end of this century — and as much as 131 cm if greenhouse gas emissions continue to grow unchecked.

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  • Experts tackle U.K. flood risk

    The U.K. Blue-Green Cities Research Project combines the expertise of academics from nine U.K. universities plus partners in the United States and China specializing in flood inundation modelling, computation fluid dynamics, sediment debris processes, river restoration and habitats, urban drainage infrastructure, environmental economics, uncertainty, flood risk management, and stakeholder engagement. The project’s goal is to make U.K. cities more resilient to flooding.

  • Integrating markets to offset climate-related food insecurity

    Global market integration is key to buffering future commodity prices and food security from the negative effects of climate change on agriculture. Rising temperatures and an increase in extreme weather events will likely have adverse impacts on global crop production, leading to higher food prices and food scarcity. But global markets that have the ability to deliver food where it is needed most could help offset these consequences.

  • Extreme weather likely to result in “food shocks”

    A panel of British and American researchers, speaking at the annual meeting of the American Association for the Advancement of Science (AAAS) in Washington, D.C., presented updated research revealing how extreme events which affect the food system are increasingly likely to occur, resulting in “food shocks.”

  • Better Greenland, Antarctica sheet modeling helps predict sea-level rise

    The Greenland and Antarctic ice sheets will make a dominant contribution to twenty-first century sea-level rise if current climate trends continue. However, predicting the expected loss of ice sheet mass is difficult due to the complexity of modeling ice sheet behavior. Better to understand this loss, a team of Sandia National Laboratories researchers has been improving the reliability and efficiency of computational models that describe ice sheet behavior and dynamics.

  • Passengers on trans-Atlantic flights will spend more time in the air as a result of climate change

    Planes flying between Europe and North America will be spending more time in the air due to the effects of climate change, a new study has shown. By accelerating the jet stream — a high-altitude wind blowing from west to east across the Atlantic — climate change will speed up eastbound flights but slow down westbound flights, the study found. The findings could have implications for airlines, passengers, and airports.

  • Severe drought no longer caused just by nature

    Scientists are calling on drought researchers and managers around the world to consider both human activity and natural phenomena in their battle to preserve increasingly scarce global water supplies. The experts say that severe droughts experienced recently in countries such as China, Brazil and the United States can no longer be seen as purely natural hazards. Changes to the way people use the water and the landscape contribute to extreme water shortages.

  • Tools to help communities predict, cope with floods

    Anticipation and preparedness of large-scale flood events play a key role in mitigating their impacts and optimizing the strategic planning of water resources. Although many countries have well-established systems for river monitoring and early flood warning, an increasing number of inhabitants are affected by floods every year. The Global Flood Awareness System (GloFAS) has been set up providing an overview on upcoming flooding in large world river basins.

  • Human-induced climate change helped cause south of England floods: Scientists

    Human-induced climate change increased the risk of severe storms like those that hit the south of England in the winter of 2013-14, causing devastating flooding and costing several people their lives. This is according to new analysis from an international team of climate scientists led by researchers at Oxford University.

  • Recent summer temperatures in Europe likely the warmest of the last 2 millennia

    Most of Europe has experienced strong summer warming over the course of the past several decades, accompanied by severe heat waves in 2003, 2010, and 2015. New research now puts the current warmth in a 2,100-year historical context. The evidence suggests that past variability has been associated with large volcanic eruptions and changes in the amount of energy received from the sun, but that temperatures over the past thirty years lie outside the range of these natural variations, supporting the conclusion that recent warming is mainly caused by anthropogenic activity.

  • It is 3 minutes to midnight -- still

    The Bulletin of the Atomic Scientists yesterday announced that the minute hand of the Bulletin’s closely watched Doomsday Clock will remain at three minutes to midnight, since recent progress in the Iran nuclear agreement and the Paris climate accord “constitute only small bright spots in a darker world situation full of potential for catastrophe.” The Bulletin’s panel of security experts said that “Three minutes (to midnight) is too close. Far too close…” – but that this reflects “world leaders continue to fail to focus their efforts and the world’s attention on reducing the extreme danger posed by nuclear weapons and climate change. When we call these dangers existential, that is exactly what we mean: They threaten the very existence of civilization and therefore should be the first order of business for leaders who care about their constituents and their countries.”

  • Rapid, affordable energy transformation in U.S. possible

    The United States could slash greenhouse gas emissions from power production by up to 78 percent below 1990 levels within fifteen years while meeting increased demand, according to a new study. The study used a sophisticated mathematical model to evaluate future cost, demand, generation, and transmission scenarios. It found that with improvements in transmission infrastructure, weather-driven renewable resources could supply most of the nation’s electricity at costs similar to today’s.

  • Record warm years almost certainly the result of human-made climate change

    Recent record warm years are with extremely high likelihood caused by human-made climate change. Without greenhouse-gas emissions from burning coal and oil, the odds are vanishingly small that 13 out of the 15 warmest years ever measured would all have happened in the current, still young century. These odds are between 1 in 5,000 and 1 in 170,000, a new study by an international team of scientists now shows. Including the data for 2015, which came in after the study was completed, makes the odds even slimmer.

  • Global water supply under increasing pressure

    A new study projects that global demand for water could more than double by 2050, increasing pressure on already scarce water resources. “Our current water use habits increase the risk of being unable to maintain sustainable food production and economic development for the future generation,” says one researcher. Water efficiency and water saving measures could stabilize demand.