• Climate change projected to significantly increase harmful algal blooms in U.S. freshwaters

    Harmful algal blooms known to pose risks to human and environmental health in large freshwater reservoirs and lakes are projected to increase because of climate change, according to a team of researchers led by a Tufts University scientist.

    The team developed a modeling framework that predicts that the largest increase in cyanobacterial harmful algal blooms (CyanoHABs) would occur in the Northeast region of the United States, but the biggest economic harm would be felt by recreation areas in the Southeast.

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  • NASA's GPM Found Gert Strengthening into a Hurricane

    NASA looked at the rainfall rates within Tropical Storm Gert as it continued to strengthen and found the most intense rainfall on the tropical cyclone's eastern side. Just over 12 hours later, Gert would strengthen into a hurricane. As Gert has strengthened, the storm began generating dangerous surf along the U.S. East coast.

    The Global Precipitation Measurement mission or GPM core observatory satellite passed above tropical storm Gert on August 14, 2017 at 9:36 a.m. EDT (1336 UTC) when winds had reached about 57.5 mph (50 knots). Data collected by GPM's Microwave Imager (GMI) and Dual-Frequency Precipitation Radar (DPR) instruments were used to show the coverage and the intensity of rainfall around Tropical Storm Gert. The area covered by GPM's radar swath revealed that the most intense rainfall, measuring greater 3.5 inches (90 mm) per hour, was located in bands of rain on the eastern side of the storm.

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  • NASA Sees Tropical Storm Jova Being Ripped Apart

    Satellite imagery from NOAA's GOES-West satellite showed vertical wind shear was already tearing Tropical Storm Jova apart just two days after it formed. By August 14, the storm weakened into a post-tropical cyclone.

    Tropical Storm Jova formed around 11 p.m. EDT on Friday, August 11. Now, wind shear it tearing the storm apart.

    At 12:45 p.m. EDT (1500 UTC) on Sunday, August 13, NOAA's GOES-West satellite captured a visible image of Tropical Depression Jova that showed wind shear was pushing most of the clouds southwest of the center of circulation. That wind shear is causing the demise of the depression.

    NOAA manages the GOES series of satellites. NASA/NOAA's GOES Project at NASA's Goddard Space Flight Center in Greenbelt, Maryland uses the satellite data to create imagery.

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  • Study Finds Drought Recoveries Taking Longer

    As global temperatures continue to rise, droughts are expected to become more frequent and severe in many regions during this century. A new study with NASA participation finds that land ecosystems took progressively longer to recover from droughts in the 20th century, and incomplete drought recovery may become the new normal in some areas, possibly leading to tree death and increased emissions of greenhouse gases.

    In results published Aug. 10 in the journal Nature, a research team led by Christopher Schwalm of Woods Hole Research Center, Falmouth, Massachusetts, and including a scientist from NASA's Jet Propulsion Laboratory, Pasadena, California, measured recovery time following droughts in various regions of the world. They used projections from climate models verified by observations from the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument on NASA's Terra satellite and ground measurements. The researchers found that drought recovery was taking longer in all land areas. In two particularly vulnerable regions -- the tropics and northern high latitudes -- recovery took ever longer than in other regions.

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  • NASA's Sees a Tightly Wound Typhoon Banyan

    Satellite imagery from NASA-NOAA's Suomi NPP satellite showed powerful storms tightly would around Typhoon Banyan's center as it moved through the Pacific Ocean.

    On Aug. 14 at 02:06 UTC (Aug. 13 at 10:06 p.m. EDT) the Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard NASA-NOAA's Suomi NPP satellite provided a visible look at Banyan. The visible image showed a tight concentration of strong thunderstorms around the center of circulation, but no eye was visible. However, microwave satellite imagery did reveal an eye.

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  • Drone tech offers new ways to manage climate change

    An innovation providing key clues to how humans might manage forests and cities to cool the planet is taking flight. Cornell researchers are using drone technology to more accurately measure surface reflectivity on the landscape, a technological advance that could offer a new way to manage climate change.

    “When making predictions about climate change, it’s critical that scientists understand how much energy the earth is absorbing and retaining,” said Charlotte Levy, a doctoral candidate who presented a talk on her research at the annual Ecological Society of America meeting, in Portland, Oregon, Aug. 8.

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  • Student's idea leads to Antarctic volcano discovery

    An Edinburgh student has helped identify what may be the largest volcanic region on Earth.

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  • Study Links Major Floods in North America and Europe to Multi-Decade Ocean Patterns

    The number of major floods in natural rivers across Europe and North America has not increased overall during the past 80 years, a recent study has concluded. Instead researchers found that the occurrence of major flooding in North America and Europe often varies with North Atlantic Ocean temperature patterns.

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  • Ozone Treaty Taking a Bite Out of Us Greenhouse Gas Emissions

    The Montreal Protocol, the international treaty adopted to restore Earth’s protective ozone layer in 1989, has significantly reduced emissions of ozone-depleting chemicals from the United States. In a twist, a new study shows the 30-year old treaty has had a major side benefit of reducing climate-altering greenhouse gas emissions from the U.S.

    That’s because the ozone-depleting substances controlled by the treaty are also potent greenhouse gases, with heat-trapping abilities up to 10,000 times greater than carbon dioxide over 100 years.

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  • Canary in a coal mine: Survey captures global picture of air pollution's effects on birds

    Famously, the use of caged birds to alert miners to the invisible dangers of gases such as carbon monoxide gave rise to the cautionary metaphor “canary in a coal mine.”

    But other than the fact that exposure to toxic gases in a confined space kills caged birds before affecting humans — providing a timely warning to miners — what do we know about the effects of air pollution on birds?

    Not as much as you’d think, according to researchers from the University of Wisconsin–Madison.

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