The UF study suggests that climate warming in the arctic tundra may cause the release of much more carbon dioxide than previously expected. Even though plants grew more, and more carbon was stored in plants and in the surface of the soil, the whole ecosystem did not gain carbon. Instead, it lost a tremendous amount from the deepest soil layers, probably because increased nitrogen accelerated the breakdown of soil carbon. Credit: Ted Schuur
This colorful image of the Arctic National Wildlife Refuge and the Beaufort Sea was acquired by the Multi-angle Imaging Spectroradiometer on August 16, 2000. The Refuge encompasses a variety of arctic and subarctic ecosystems, including coastal lagoons, barrier islands, arctic tundra, and mountainous terrain. Credit: NASA/GSFC/LaRC/JPL, MISR Team
NASA-funded researchers have found that despite their sub-zero temperatures, a warming north may add more carbon to the atmosphere from soil, accelerating climate warming further.
"The 3 to 7 degree Fahrenheit rise in temperature predicted by global climate computer models could cause the breakdown of the arctic tundra’s vast store of soil carbon," said Michelle Mack, an ecologist at the University of Florida, Gainsville, Fla., and one of the lead researchers on a study published in last week’s issue of Nature. It would release more of the greenhouse gas carbon dioxide into the air than plants are capable of taking in.
The study results suggest that climate warming in the arctic tundra may cause the release of much more carbon dioxide than previously expected. This type of positive feedback will make the Earth’s climate change even more rapidly. The findings were collected in a 20-year experiment of the effects of fertilization on the arctic tundra at the Arctic Long-Term Ecological Research site near Toolik Lake, Alaska. The National Science Foundation and NASA provided funding for the research.
Rob Gutro | EurekAlert!
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Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
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Water molecules exist in two different forms with almost identical physical properties. For the first time, researchers have succeeded in separating the two forms to show that they can exhibit different chemical reactivities. These results were reported by researchers from the University of Basel and their colleagues in Hamburg in the scientific journal Nature Communications.
From a chemical perspective, water is a molecule in which a single oxygen atom is linked to two hydrogen atoms. It is less well known that water exists in two...
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