A study conducted by an expert at the University of Sheffield and officials at NASA has found that while Greenland’s ice is certainly thinning, snowfall in some areas is increasing, with levels in south-east Greenland in the past year being three times higher than is usual. This opens debate as to how global warming will affect Greenland’s ice sheet and could mean that it remains stable, as thinning ice is offset by increased snowfall, which will replace the melted ice.
Edward Hanna, from the University of Sheffield’s Department of Geography explains, “Our study involved using airborne laser surveys to measure the height of the ice in Greenland. We found that ice is thinning at an extremely rapid rate along the margins, meaning that Greenland’s contribution to global sea level rise has almost doubled since the mid 90s.
“In contrast to this, ice in South East Greenland has actually thickened by a metre between 2002 and 2003, reversing the thinning of between 10cm and 40cm a year which had been occurring there in the mid 90s. This sudden thickening was due to unusually high levels of snowfall between 2002 and 2003. Usually this area would experience about a metre of snow per year, but in this period 3m of snow fell, which is the highest rate in more than 45 years of meteorological data.
Successful calculation of human and natural influence on cloud formation
04.11.2016 | Goethe-Universität Frankfurt am Main
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04.10.2016 | University of Adelaide
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water
In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...
The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.
Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...
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