The United States exports nitrogen pollution beyond its borders, and some of this nitrogen may end up in Western Europe, according to a recent data analysis by scientists at the National Center for Atmospheric Research (NCAR) and the University of New Hampshire. Most of the nitrogen pollution produced in Western Europe is deposited within its own boundaries, the authors found. The findings are an important step in quantifying total U.S. pollution export for policy makers. The study was published in the February issue of the journal Ecological Applications.
Nitrogen pollution degrades air and water quality and alters terrestrial and aquatic ecosystems worldwide, with profound consequences for human health and agriculture.
Atmospheric nitrogen emission and deposition are out of balance for the continental United States but more closely balanced in Europe, the authors found when they analyzed data gathered between 1978 and 1994. Only 40% of U.S. nitrogen released into the atmosphere as trace gases, including nitrogen oxides (NOx) and ammonia (NH3), was found deposited within U.S. boundaries during the study period. Between 5.30 and 7.81 million metric tons (5.83 and 8.59 million U.S. tons) of total NOx and NH3 were unaccounted for and possibly transported elsewhere each year, the authors estimate.
Anatta | EurekAlert!
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Satellites in near-Earth orbit are at risk due to the steady increase in space debris. But their mission in the areas of telecommunications, navigation or weather forecasts is essential for society. Fraunhofer FHR therefore develops radar-based systems which allow the detection, tracking and cataloging of even the smallest particles of debris. Satellite operators who have access to our data are in a better position to plan evasive maneuvers and prevent destructive collisions. From April, 25-29 2018, Fraunhofer FHR and its partners will exhibit the complementary radar systems TIRA and GESTRA as well as the latest radar techniques for space observation across three stands at the ILA Berlin.
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Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP, provider of research and development services for OLED lighting solutions, announces the founding of the “OLED Licht Forum” and presents latest OLED design and lighting solutions during light+building, from March 18th – 23rd, 2018 in Frankfurt a.M./Germany, at booth no. F91 in Hall 4.0.
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