NASA scientists discovered pollution could catch an airborne "express train," or wind current, from Asia all the way to the southern Atlantic Ocean.
RIDING THE POLLUTION TRAIN
The red arrows on this globe trace the fast track of ozone pollution from Asia as it contributes to the highest ozone episodes found in the South Atlantic. Asian smog with moderate amounts of ozone moves south into the Indian Ocean. Repeatedly, every few weeks, when this ozone can be swept upwards by tall rainclouds, it can then move eastward rapidly across Central Africa (upper arrow). The long red path is shown to end at Ascension Island, but actually a large patch of ozone fills much of the South Atlantic. Additionally, lightning and vegetation burning over Africa could add highly visible "pollution peak" features, but these obvious nearby African sources tell only half the story of the Atlantic ozone episodes. CREDIT: NASA, MODIS image
AN OZONESONDE AND BALLOON
Anne Thompson (NASA, left) and Agnes Phahlane (South African Weather Service, right) prepare to launch a balloon carrying an ozonesonde, a sensor that measures ozone. CREDIT: NASA
Scientists believe during certain seasons, as much as half of the ozone pollution above the Atlantic Ocean may be speeding down a "train" track of air from the Indian Ocean. As it rolls along, it picks up more smog from air peppered with thunderstorms that bring it up from the Earths surface.
Bob Chatfield, a scientist at NASAs Ames Research Center, Moffett Field, Calif. said, "Man-made pollution from Asia can flow southward, get caught up into clouds, and then move steadily and rapidly westward across Africa and the Atlantic, reaching as far as Brazil."
Gretchen Cook-Anderson | GSFC
Sinking groundwater levels threaten the vitality of riverine ecosystems
04.10.2019 | Albert-Ludwigs-Universität Freiburg im Breisgau
A new research project at the TH Mittelhessen focusses on the development of a novel light weight design concept for leisure boats and yachts. Professor Stephan Marzi from the THM Institute of Mechanics and Materials collaborates with Krake Catamarane, which is a shipyard located in Apolda, Thuringia.
The project is set up in an international cooperation with Professor Anders Biel from Karlstad University in Sweden and the Swedish company Lamera from...
Superconductivity has fascinated scientists for many years since it offers the potential to revolutionize current technologies. Materials only become superconductors - meaning that electrons can travel in them with no resistance - at very low temperatures. These days, this unique zero resistance superconductivity is commonly found in a number of technologies, such as magnetic resonance imaging (MRI).
Future technologies, however, will harness the total synchrony of electronic behavior in superconductors - a property called the phase. There is currently a...
How do some neutron stars become the strongest magnets in the Universe? A German-British team of astrophysicists has found a possible answer to the question of how these so-called magnetars form. Researchers from Heidelberg, Garching, and Oxford used large computer simulations to demonstrate how the merger of two stars creates strong magnetic fields. If such stars explode in supernovae, magnetars could result.
How Do the Strongest Magnets in the Universe Form?
A hot, molten Earth would be around 5% larger than its solid counterpart. This is the result of a study led by researchers at the University of Bern. The difference between molten and solid rocky planets is important for the search of Earth-like worlds beyond our Solar System and the understanding of Earth itself.
Rocky exoplanets that are around Earth-size are comparatively small, which makes them incredibly difficult to detect and characterise using telescopes. What...
Scientists at the Max Planck Institute for Chemical Physics of Solids in Dresden, Princeton University, the University of Illinois at Urbana-Champaign, and the University of the Chinese Academy of Sciences have spotted a famously elusive particle: The axion – first predicted 42 years ago as an elementary particle in extensions of the standard model of particle physics.
The team found signatures of axion particles composed of Weyl-type electrons (Weyl fermions) in the correlated Weyl semimetal (TaSe₄)₂I. At room temperature,...
02.10.2019 | Event News
02.10.2019 | Event News
19.09.2019 | Event News
14.10.2019 | Physics and Astronomy
14.10.2019 | Earth Sciences
14.10.2019 | Health and Medicine