One of the first global-scale simulations of dust and climate from preindustrial times to the year 2100 projects a worldwide decrease in airborne dust of 20–63% by the end of this century. The computer model studies show less wind, more moisture, and enhanced vegetation in desert areas as carbon dioxide increases over the next century, keeping more of the worlds dust on the ground. Coauthor Natalie Mahowald of the National Center for Atmospheric Research presented the results this week at the American Geophysical Unions annual meeting in San Francisco.
"Reductions in global dust levels could have a profound impact on future climate predictions," says Mahowald. Dust helps to lower global temperature by reflecting sunlight, as well as by depositing iron in the ocean and thus fertilizing marine organisms that remove carbon dioxide from the atmosphere.
Mahowald and Chao Luo (University of California, Santa Barbara) combined NCARs global Climate System Model with other software specifically tailored to simulate dust under a variety of climate regimes. The climate changes are driven primarily by an increase in atmospheric carbon dioxide from 280 parts per million in 1890 (preindustrial) to 500 ppm by 2090--a scenario considered reasonable by the Intergovernmental Panel on Climate Change.
Anatta | EurekAlert!
World’s oldest known oxygen oasis discovered
18.01.2018 | Eberhard Karls Universität Tübingen
A close-up look at an uncommon underwater eruption
11.01.2018 | Woods Hole Oceanographic Institution
On the way to an intelligent laboratory, physicists from Innsbruck and Vienna present an artificial agent that autonomously designs quantum experiments. In initial experiments, the system has independently (re)discovered experimental techniques that are nowadays standard in modern quantum optical laboratories. This shows how machines could play a more creative role in research in the future.
We carry smartphones in our pockets, the streets are dotted with semi-autonomous cars, but in the research laboratory experiments are still being designed by...
What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...
For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.
Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...
At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.
No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...
Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.
Multiferroic materials show magnetically driven ferroelectricity. They are attracting increasing attention because of their fascinating properties such as...
08.01.2018 | Event News
11.12.2017 | Event News
08.12.2017 | Event News
19.01.2018 | Materials Sciences
19.01.2018 | Health and Medicine
19.01.2018 | Physics and Astronomy