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!
"Flight recorder" of rocks within the Earth’s crust
16.04.2019 | Universität Bern
More than 90% of glacier volume in the Alps could be lost by 2100
09.04.2019 | European Geosciences Union
A stellar flare 10 times more powerful than anything seen on our sun has burst from an ultracool star almost the same size as Jupiter
A localization phenomenon boosts the accuracy of solving quantum many-body problems with quantum computers which are otherwise challenging for conventional computers. This brings such digital quantum simulation within reach on quantum devices available today.
Quantum computers promise to solve certain computational problems exponentially faster than any classical machine. “A particularly promising application is the...
The technology could revolutionize how information travels through data centers and artificial intelligence networks
Engineers at the University of California, Berkeley have built a new photonic switch that can control the direction of light passing through optical fibers...
Physicists observe how electron-hole pairs drift apart at ultrafast speed, but still remain strongly bound.
Modern electronics relies on ultrafast charge motion on ever shorter length scales. Physicists from Regensburg and Gothenburg have now succeeded in resolving a...
Engineers create novel optical devices, including a moth eye-inspired omnidirectional microwave antenna
A team of engineers at Tufts University has developed a series of 3D printed metamaterials with unique microwave or optical properties that go beyond what is...
17.04.2019 | Event News
15.04.2019 | Event News
09.04.2019 | Event News
18.04.2019 | Life Sciences
18.04.2019 | Physics and Astronomy
18.04.2019 | Life Sciences