Summertime in northern Australia means monsoon storms -- and plenty of them. Tall, turbulent clouds associated with these storm systems form rapidly, release their energy in the form of rain, then tail away, leaving in their wake a surplus of moisture to feed the next system. This lifecycle--the formation of tropical convective clouds, their outflow into cirrus clouds, and eventual dissipation into water vapor--is a key component of tropical climate. However, the cloud properties and the extent of their impact on the environment are not well understood or well represented in computer models that are used to simulate climate change.
This week, a team of more than 25 international cloud climate scientists are conducting a three-day operations and planning simulation at Sandia National Laboratories in Livermore, California, to prepare for a complex experiment that will result in the most detailed data sets ever collected for tropical convection. Led by scientists from the U.S. Department of Energy’s Atmospheric Radiation Measurement (ARM) Program and the Australian Bureau of Meteorology (BOM), the Tropical Warm Pool International Cloud Experiment will take place in the region around Darwin, Australia, between January and February 2006.
Darwin is home to one of the ARM Program’s permanent research sites, equipped with a sophisticated array of remote sensing instruments to collect the continuous measurements needed to improve computer models that simulate clouds and climate. The upcoming experiment will include an unprecedented network of ground-based instrumentation, a ship operating off the coast near Darwin, and a fleet of low-, middle- and high-altitude aircraft for in-situ and remote-sensing measurements. Aircraft measurements taken during the experiment will be valuable for validating and improving existing ground-based measurements from the ARM site in Darwin, as well as satellite observations obtained by the National Aeronautics and Space Administration (NASA).
NASA examines Peru's deadly rainfall
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Steep rise of the Bernese Alps
24.03.2017 | Universität Bern
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
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24.03.2017 | Physics and Astronomy