Science Daily July 11, 2019 An international team of researchers (Germany, France, Italy) has shown that the presence of ammonium nitrate particles in the upper troposphere from the Eastern Mediterranean to the Western Pacific is fed by convection that transports large amounts of ammonia from surface sources into the upper troposphere. Solid ammonium nitrate particles in the upper troposphere play a hitherto neglected role in ice cloud formation and aerosol indirect radiative forcing…read more. Open Access TECHNICAL ARTICLE
Tag Archives: Atmospheric science
Chaos theory produces map for predicting paths of particles emitted into the atmosphere
Eurekalert July 16, 2019 Floating air particles following disasters and other largescale geological events can have a lasting impact on life on Earth. Using available wind data, researchers in Hungary have developed a model for following air particles as they travel around the globe. They found that lifetimes of particles ranged from about two to 150 days for typical volcanic ash particles, more than 10% of smaller particles survive in the atmosphere as much as one year, and more than 1% survive two years, particles coming from the area around the equator remain in the atmosphere for the longest time, […]
Earth’s atmosphere stretches out to the moon – and beyond
Phys.org February 20, 2019 Where our atmosphere merges into outer space, there is a cloud of hydrogen atoms called the geocorona. An international team of researchers (Russia, France, Finland) found that the measurements made in 1996, 1997 and 1998 showed geocorona extends at least up to 100 Earth Radii encompassing the orbit of the Moon. The extra source of hydrogen is not significant enough to facilitate space exploration. These particles do not pose any threat for space travelers on future crewed missions orbiting the moon. But the Earth’s geocorona could interfere with future astronomical observations performed in the vicinity of […]
International research collaboration computes climate past, present, and future
Eurekalert February 18, 2019 An international team of researchers (Canada, Germany) is working on ClimEx Project to improve researchers’ understanding of severe flooding dynamics under changing climate conditions. To investigate extreme floods associated with long return periods, there is a relatively short time period to reference, often less than 30 years of accurate, detailed data. To predict flooding, the team further downscales the ClimEx simulations statistically to provide input data for hyper-accurate, high-resolution hydrological modeling. The team’s simulations showed good agreement with historical climate data, leaving them confident in its predictive power and its ability to help improve impact models […]
Lightning’s electromagnetic fields may have protective properties
Space Daily February 11, 2019 Researchers in Israel repot that in the course of numerous laboratory experiments, where they induced fields similar to those in the atmosphere, they witnessed significant effects on living heart cells of rats within 30-40 minutes. Extremely weak magnetic fields in the 7.6-8Hz frequency range induced several effects when applied to rat cardiac cells, including reductions in spontaneous contractions, calcium transients and the release of Creatine Kinase. It may explain why all living organisms have electrical activity in the same ELF spectral range. This may have some therapeutic implications down the line, since these ELF fields […]