Experts from the University of Seville highlight that these systems mean an energy saving for building owners, contribute to reducing pollution and cushioning temperatures
Researchers from the Higher Technical School of Agricultural Engineering of the University of Seville have published a study in which they indicate that it would be necessary to have between 207 and 740 hectares of green rooves, depending on the scenario that is contemplated, to reduce the effects of climate change in relation to the maximum temperature rises of between 1.5 and 6 ºC that are estimated by the end of the century. This would require between 11 and 40% of the buildings in the city.
In this project, published in the review Building and Environment, they have used Landsat 7 ETM+ and Sentinel-2 satellite images to obtain the normalised difference vegetation index (NDVI) and ground temperature.
Given the inverse relationship observed between their values, it has been possible to determine the additional area of vegetation needed (in this case of green rooves) necessary to reduce the temperature by the same amount as it is predicted to rise in different climate change models for Seville.
"To mitigate the effects of climate change, we can talk about two types of options: to attack it at its origin, by eliminating or reducing the human factors that contribute to it (such as, reducing emissions, controlling pollution, etc.) or developing strategies that allow for its effects to be reduced, such as, in the case that concerns us, increasing green areas in cities, using, for example, the tops of buildings as green rooves", states the University of Seville researcher, Luis Pérez Urrestarazu.
The installation of these gardens would provide better insulation for the buildings, which would mean, on one hand, an energy saving for their owners, and, on the other, if there were sufficient green rooves, an improvement in environmental conditions, contributing to a reducing pollution and cushioning the higher temperatures.
"To fight against climate change, this is without doubt a necessary strategy at a global level. However, local measures can be established that contribute to this global strategy and which can help to reduce the local effects that might be produced in one's own city", adds Pérez.
The University of Seville research group 'Naturación Urbana e Ingeniería de Biosistemas (Urban Naturalisation and Biosystem Engineering)' works on different projects connected to non-conventional urban naturalisation, especial vertical gardens, and in aquaponics, joint production of plants and fish.
Luis Pérez Urrestarazu | EurekAlert!
Cities can cut greenhouse gas emissions far beyond their urban borders
07.11.2017 | Potsdam-Institut für Klimafolgenforschung
Reducing manure and fertilizers decreases atmospheric fine particles
30.10.2017 | Max-Planck-Institut für Chemie
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.
During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....
The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.
Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...
Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...
The Fraunhofer Institute for Laser Technology ILT and Rapid Shape GmbH are working together to further develop resin-based 3D printing. The new “TwoCure” process requires no support structures and is significantly more efficient and productive than conventional 3D printing techniques for plastic components. Experts from Fraunhofer ILT will be presenting the state-funded joint development that makes use of the interaction of light and cold in forming the components at formnext 2017 from November 14 to 17 in Frankfurt am Main.
Much like stereolithography, one of the best-known processes for printing 3D plastic components works using photolithographic light exposure that causes liquid...
30.10.2017 | Event News
23.10.2017 | Event News
17.10.2017 | Event News
13.11.2017 | Ecology, The Environment and Conservation
13.11.2017 | Physics and Astronomy
13.11.2017 | Life Sciences