• Detecting sea-level rise acceleration to improve U.K. coastal flood defenses

    Accelerations in the rate of sea-level rise and the time required to upgrade coastal flood defense infrastructure, such as the Thames Barrier, will be investigated as part of a new research initiative. The E-Rise project will aim to better understand the likely lead times for upgrading or replacing coastal defense infrastructure around the United Kingdom during the twenty-first century. It will also assess whether we could detect sea-level accelerations earlier to provide sufficient lead time for action.

  • Damaging, costly extreme-weather winters are becoming more common in U.S.

    The simultaneous occurrence of warm winters in the West and cold winters in the East has significantly increased in recent decades. The damaging and costly phenomenon is very likely attributable to human-caused climate change, according to a new study. In the past three years alone the combination of heat-related drought in the West and Arctic conditions in the East have pinched the national economy, costing several billion dollars in insured losses, government aid and lost productivity. When such weather extremes occur at the same time, they threaten to stretch emergency responders’ disaster assistance abilities, strain resources such as interregional transportation, and burden taxpayer-funded disaster relief.

  • Level of northern Indian Ocean rose twice as fast as global average since 2003

    Many of the world’s most vulnerable populations to sea level rise live in areas along the northern Indian Ocean. New study shows that sea level rise in the northern Indian Ocean rose twice as fast as the global average since 2003. The reason for the rapid rise in sea level is that winds blowing over the ocean amplify sea level rise by increasing the amount of ocean heat brought into the region.

  • Smoke from 2015 Indonesian fires may have caused more than 100,000 deaths

    In the fall of 2015, hazardous levels of smoke from agricultural fires blanketed much of Equatorial Asia. Schools and businesses closed, planes were grounded, and tens of thousands sought medical treatment for respiratory illness. In a new study, researchers estimate that the 2015 smoke event caused upward of 100,000 deaths across Indonesia, Malaysia, and Singapore.

  • August marks ongoing trend of record-breaking heat for the globe

    August marks a 16-months of record warmth for the globe, the longest such streak in 137 years. August 2016 was 1.66 degrees F above the twentieth-century average, breaking last years’ record for the warmest August on record by 0.09 degrees F. The June–August seasonal temperature was 1.6 degrees F above average, surpassing the heat record for this period set in 2015 by 0.07 degrees.

  • Integrating climate change into U.S. national security planning

    On Wednesday, President Barack Obama signed a Presidential Memorandum to address climate change and national security. The Department of Defense calls it a “threat multiplier.” The Department of Homeland Security considers it a major homeland security risk. As President Obama said in to the G-20 Summit in Hangzhou, China, “the growing threat of climate change could define the contours of this century more dramatically than any other challenge.”

  • Extraordinary global heat continues

    Although the seasonal temperature cycle typically peaks in July, August 2016 wound up tied with July 2016 for the warmest month ever recorded. August 2016’s temperature was 0.16 degrees Celsius warmer than the previous warmest August (2014). The month also was 0.98 degrees Celsius warmer than the mean August temperature from 1951-1980, according to NASA. The increasing warming is driven by carbon dioxide concentrations – which have passed the symbolic milestone of 400 parts per million in the atmosphere so far this year. Levels vary according to the season, but the underlying trend is upward. According to NOAA, the global monthly mean CO2 in July 2016 was 401.72 parts per million, up from 393.13 parts per million in July 2015.

  • What causes mass panic in emergency situations?

    In emergency situations such as terrorist attacks, natural catastrophes, and fires, there is always a risk of mass panic leading to deadly crowd disasters. But what causes mass panic and where are the danger zones? Because these questions are difficult to study in the real world, researchers exposed experiment participants to an emergency in a three-dimensional virtual environment.

  • Climate change poses “strategically significant risk” to U.S. national security

    Twenty-five national security and military leaders the other day released a statement declaring that: “the effects of climate change present a strategically-significant risk to U.S. national security,” and urging a “comprehensive policy” in response. The authors of the statement say that stresses resulting from climate change can increase the likelihood of intra or international conflict, state failure, mass migration, and the creation of additional ungoverned spaces, across a range of strategically-significant regions. They add that the impacts of climate change will place significant strains on international financial stability through contributing to supply line disruptions for major global industries in the manufacturing, energy, agriculture, and water sectors, disrupting the viability of the insurance industry, and generally increasing the political and financial risks of doing business in an increasingly unstable global environment.

  • Do teachers’ climate change beliefs influence students? The answer is yes and no

    A study of middle school science classes explored whether teachers’ beliefs about climate change influenced students’ perceptions. “The answer is yes and no,” says the study’s author. “While students generally mirror a teacher’s belief that global warming is happening, when it comes to the cause of climate change, students reason for themselves and reach different conclusions than their teachers do.”

  • Command under attack: What we’ve learned since 9/11 about managing crises

    Major disasters pose difficult challenges for responders on the ground and for higher-level officials trying to direct operations. Some events are novel because of their scale, while others involve challenges that no one may ever have envisioned. Communities need to bring their response agencies together regularly to plan and practice. This can develop and maintain knowledge and relationships that will enable them to work together effectively under the high stress of a future attack or disaster. Any community can do this, but many have not. Where training and practice have taken place, these tools have worked. They can be improved, but the most important priority is getting more communities to practice using them more regularly, before the next disaster. One important way this nation can honor the victims of 9/11 is by using these lessons to create the conditions for even better coordination in future events.

  • Mapping, quantifying the risks space-weather poses to electric-power grids

    The vulnerability of modern society to geoelectric hazards was demonstrated in March 1989, when an intense magnetic storm caused the collapse of the entire Canadian Hydro-Québec power-grid system, leaving six million people without electricity for nine hours. Scientists recently published research — including maps covering large areas of the United States — showing how the effects from intense geomagnetic storms are impacted by the Earth’s electrical conductivity. This is one of the first steps toward mapping nation-wide “induction hazards.”

  • Tsunami evacuation plans: A case study in Alameda, California

    Tsunami evacuation planning in coastal communities is typically based on maximum evacuation zones that reflect a combination of all potential extreme tsunamis. However, in the case of a smaller tsunami, this approach may result in more people being evacuated than need to be, and in doing so, may overly disrupt the local economy, and strain resources needed during emergency response. Evacuations are intended to keep a population safe and reduce losses, but what are the costs of lost work and wages, or accidental injuries that may occur during an evacuation?

  • Climate change already playing major roles

    While the effects of future climate change will be significant, the social and economic impacts of our current climate today are often just as severe. A new study looked at current climate impacts on areas such as economy, agriculture, trade, energy, violence, migration, and more. The authors calculate, for example, that high temperatures currently drive up rates of civil conflict in sub-Saharan Africa by 29 percent and slow the growth rate of the global economy by 0.25 percentage points per year.

  • Climate change increased chances of record rains in Louisiana by at least 40 percent

    Human-caused climate warming increased the chances of the torrential rains that unleashed devastating floods in south Louisiana in mid-August by at least 40 percent, according to a team of NOAA and partner scientists. “We found human-caused, heat-trapping greenhouse gases can play a measurable role in events such as the August rains that resulted in such devastating floods, affecting so many people,” says the lead author of a new study.