From volcanic eruptions to ozone holes, a NASA instrument that monitors Earths upper atmosphere marks twenty years in orbit.
The Stratospheric Aerosol and Gas Experiment II (SAGE II) instrument was deployed October 5, 1984, from the Space Shuttle Challenger aboard the Earth Radiation Budget Satellite (ERBS.) Originally scheduled for a two-year mission, SAGE II continues to give scientists a wealth of data on the chemistry and motions of the upper troposphere and stratosphere. "The importance of the SAGE II data is helping to solve some exceedingly important societal issues like ozone depletion and greenhouse warming," said SAGE II principal investigator Dr. M. Patrick McCormick, Co-Director of the Center for Atmospheric Sciences at Hampton University, Hampton, Va. "SAGE II has been a defining experience for my career and me."
Managed by NASA Langley Research Center in Hampton, Va., SAGE II is part of NASAs Earth Radiation Budget Experiment (ERBE.) The series of satellites launched in the mid -1980s were designed to investigate how energy from the Sun is absorbed and re-emitted by the Earth – one of the main processes that drive weather patterns. Observations from the ERB satellite are also used to study the effects on the Earths radiation balance from human activities -- burning fossil fuels and the use of chemicals -- and natural occurrences such as volcanic eruptions.
Chris Rink | EurekAlert!
Silicon solar cell of ISFH yields 25% efficiency with passivating POLO contacts
08.12.2016 | Institut für Solarenergieforschung GmbH
Robot on demand: Mobile machining of aircraft components with high precision
06.12.2016 | Fraunhofer IFAM
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
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