• California drought patterns becoming more common

    Atmospheric patterns resembling those that appeared during the latter half of California’s ongoing multi-year drought are becoming more common. The current record-breaking drought in California has arisen from both extremely low precipitation and extremely warm temperature. The new study found clear evidence that atmospheric patterns that look like those seen during this extreme drought have in fact become more common in recent decades.

  • Analyzing the effects of rising sea levels in Norfolk, Va.

    In Norfolk, Virginia, an East Coast city which is home to the world’s largest naval station and important seaports, catastrophic flooding could damage more than homes and roads. A new study from Sandia National Laboratories assesses how much the city, its region, and the nation would suffer in damages to national assets and lost economic activity if it does nothing to address rising sea levels. The analysis method is available to cities that want to become more resilient.

  • view counter
  • Rapid Antarctica ice melt: Sea-level rise nearly double over earlier estimates

    A new study suggests that the most recent estimates by the Intergovernmental Panel on Climate Change for future sea-level rise over the next 100 years could be too low by almost a factor of two. The researchers incorporated into their models mechanisms that were previously known but never incorporated in a model like this before, and added them to their ice-sheet model, so they could consider the effects of surface melt water on the break-up of Antarctica’s ice shelves and the collapse of vertical ice cliffs.

  • Starvation is only one crop breeding cycle away

    Global population growth, urbanization, and a changing climate mean staple food crops will need to achieve much higher yields in the near future. New research proposes genetic engineering solutions to improve photosynthetic efficiency of food crops, boosting yield under higher temperatures and carbon dioxide levels. Because it can take twenty to thirty years of breeding and product development efforts before new crops are available to farmers, those efforts must start now.

  • Water problems in Asia’s future?

    By Peter Dizikes

    Economic and population growth on top of climate change could lead to serious water shortages across a broad swath of Asia by the year 2050. Having run a large number of simulations of future scenarios, the researchers find that the median amounts of projected growth and climate change in the next thirty-five years in Asia would lead to about one billion more people becoming “water-stressed” compared to today.

  • 1.4 billion people face severe natural disaster risks in South Asia

    New data has revealed that 1.4 billion people in South Asia, or 81 percent of the region’s population, are acutely exposed to at least one type of natural hazard and live in areas considered to have insufficient resources to cope with and rebound from an extreme event. Poor governance, weak infrastructure, and high levels of poverty and corruption amplify the economic and humanitarian losses associated with significant natural hazards events – and these factors will exacerbate the consequences of natural disasters especially in Africa, a continent which hosts eight out of the nine countries most vulnerable to natural hazards.

  • Quantifying climate-driven impacts on the Colorado Basin, developing response strategies

    The Colorado basin — roughly 11 percent of the United States — directly supports water supply for more than thirty million people, accounts for approximately 15 percent of U.S. crops and livestock, and provides 53 gigawatts of power generation capacity. Climate-driven heat-stress and forest mortality on the Colorado River watershed are expected to reduce river flows basin-wide out to the year 2100.

  • To avoid multiple climate tipping points, CO2 emissions should be stopped by 2050: Study

    To avoid multiple climate tipping points, policy makers need to act now to stop global CO2 emissions by 2050 and meet the Paris Agreement’s goal of limiting global warming to 1.5 °C above pre-industrial levels, a new study has said. The new research shows that existing studies have massively under-valued the risk that ongoing carbon dioxide emissions pose of triggering damaging tipping points.

  • 2015 made history with record heat, weather extremes: WMO

    The year 2015 made history, with shattered temperature records, intense heatwaves, exceptional rainfall, devastating drought, and unusual tropical cyclone activity, according to the World Meteorological Organization. That record-breaking trend has continued in 2016. The global average surface temperature in 2015 broke all previous records by a wide margin, at about 0.76° Celsius above the 1961-1990 average because of a powerful El Niño and human-caused global warming. With 93 percent of excess heat stored in the oceans, ocean heat content down to 2,000 meters also hit a new record.

  • Expanding use of recycled water would benefit the environment, human health

    More than 1 in 9 people around the world, about 750 million, do not have access to safe, clean drinking water, and the problem is expected to worsen in step with rising greenhouse gas concentrations, population increases and climate change. Researchers found that found that recycled water has great potential for more efficient use in urban settings and to improve the overall resiliency of the water supply.

  • February global temperature sets new record for the globe

    The average temperature for the globe during December-February was 2.03°F above the twentieth century average. This was the highest temperature for December-February in the 1880-2016 record. February 2016 also marks the tenth consecutive month in which a monthly global temperature record has been broken. Record warmth across the globe was aided by a strong El Niño which peaked during the winter.

  • Up to 70 percent of Northeast U.S. coast likely to adapt to rising seas

    Much of the coast from Maine to Virginia is more likely to change than to simply drown in response to rising seas during the next seventy years or so, according to a new study led by the U.S. Geological Survey. The study is based on a new computer model that captures the potential of the Northeast coast to change, driven by geological and biological forces, in ways that will reshape coastal landscapes.

  • Helping policymakers plan for sea level rise

    A new study could help protect more than thirteen million American homes that will be threatened by rising sea levels by the end of the century. It is the first major study to assess the risk from rising seas using year 2100 population forecasts for all 319 coastal counties in the continental U.S. Previous impact assessments use current population figures to assess long-term effects of coastal flooding. The data can help policymakers develop practical adaptation strategies for protecting land threatened by frequent and repeated inundation.

  • Warmer spring temperatures reduce Colorado River flows

    Warmer-than-average spring temperatures reduce upper Colorado River flows more than previously recognized, according to a new report. The study, the first to examine the instrumental historical record, discovers that temperature has played a larger role in streamflow and in exacerbating drought since the 1980s.

  • Sea level rise threatens more people than earlier estimated

    It is estimated that 1.9 billion inhabitants, or 28 percent of the world’s total population, live closer than 100 km from the coast in areas less than 100 meters above the present sea level. By 2050 the number of people in that zone is predicted to increase to 2.4 billion. These people are the most vulnerable to the rise of the sea level as well as to the increased number of floods and intensified storms.