Global warming may proceed faster and be more severe than previously predicted according to research about to be published in the scientific journal “Nature”. Reductions in airborne particle pollution, or aerosols, as air quality is improved, will amplify climate change by reducing the cooling effect due to aerosols and also by increasing the amount of carbon dioxide that remains in the atmosphere. Uncertainty about the magnitude of past and present cooling, however, means that we cannot be certain about the strength of future warming, which may exceed previous estimates.
Prof. Meinrat O. Andreae of the Max Planck Institute for Chemistry in Germany, Dr. Chris Jones from the Met Offices Hadley Centre for Climate Prediction and Research, and Prof. Peter Cox from the Centre for Ecology and Hydrology have studied the consequences of the cooling effect from man-made aerosols (tiny airborne particles) on present and future climate, and on the uptake of carbon dioxide CO2 by the land biosphere. Such aerosols have reduced the amount of the suns radiation that reaches the Earths surface, and thereby have offset some of the warming impact of greenhouse gases - such as carbon dioxide - which have warmed the global climate during the 20th century. However, their harmful effects on air quality and human health have led to clean air legislation requiring us to clean up our emissions.
This necessary reduction in aerosols will result in a reduction of their cooling effect and hence will accelerate global warming. Dr. Jones likens this to driving a car whilst pressing both the accelerator and the brake, “Now we are taking our foot off the brake, but we dont know how fast we will go. Because we dont know exactly how strong the aerosol cooling has been, we do not know how strong the greenhouse warming will be”.
Barnaby Smith | alfa
How fires are changing the tundra’s face
12.12.2017 | Gesellschaft für Ökologie e.V.
Using drones to estimate crop damage by wild boars
12.12.2017 | Gesellschaft für Ökologie e.V.
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong
Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...
An interdisciplinary group of researchers interfaced individual bacteria with a computer to build a hybrid bio-digital circuit - Study published in Nature Communications
Scientists at the Institute of Science and Technology Austria (IST Austria) have managed to control the behavior of individual bacteria by connecting them to a...
11.12.2017 | Event News
08.12.2017 | Event News
07.12.2017 | Event News
12.12.2017 | Earth Sciences
12.12.2017 | Power and Electrical Engineering
12.12.2017 | Life Sciences