In the clouds above Darwin, Australia, pilots guided by a team of international climate scientists are now one week into a series of carefully orchestrated flights to obtain key in situ data about tropical clouds. Preliminary results obtained from instrumentation on the Proteus --a space-age aircraft equipped with a suite of highly sophisticated sensors -- reveal superior images of ice crystals in high-altitude tropical cirrus clouds.
"These images, combined with data from other aircraft probes, will provide us with a complete data set of detailed information about ice clouds, particularly the numbers of small ice crystals--a parameter that is poorly known and of considerable importance for understanding how clouds affect radiation and climate," said Dr. Greg McFarquhar, one of many U.S. scientists involved in the effort and funded by the Department of Energys Atmospheric Radiation Measurement (ARM) Program.
The images were taken by the Cloud Particle Imager, an instrument developed by SPEC Inc. that provides very high resolution images of ice crystals. They were obtained as the Proteus aircraft was climbing through a thin layer of aged cirrus clouds, collecting data to help scientists determine how the properties of ice clouds, including particle size and shape, vary with temperature and altitude. These factors influence the longevity of the cloud, and therefore the amount of radiative energy both reaching and escaping the earth.
Clear as mud: Desiccation cracks help reveal the shape of water on Mars
20.04.2018 | Geological Society of America
Hurricane Harvey: Dutch-Texan research shows most fatalities occurred outside flood zones
19.04.2018 | European Geosciences Union
University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.
Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.
Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.
Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...
Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.
The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...
Stable joint cartilage can be produced from adult stem cells originating from bone marrow. This is made possible by inducing specific molecular processes occurring during embryonic cartilage formation, as researchers from the University and University Hospital of Basel report in the scientific journal PNAS.
Certain mesenchymal stem/stromal cells from the bone marrow of adults are considered extremely promising for skeletal tissue regeneration. These adult stem...
In the fight against cancer, scientists are developing new drugs to hit tumor cells at so far unused weak points. Such a “sore spot” is the protein complex...
13.04.2018 | Event News
12.04.2018 | Event News
09.04.2018 | Event News
20.04.2018 | Physics and Astronomy
20.04.2018 | Interdisciplinary Research
20.04.2018 | Physics and Astronomy