A new interpretation for temperature data from satellites, published earlier this year, raised controversy when its authors claimed it eliminated doubt that, on average, the lower atmosphere is getting warmer as fast as the Earth’s surface.
Now, in another study headed by the same researcher to be published Dec. 15 in the Journal of Climate, direct temperature data from other scientists has validated the satellite interpretation. A team headed by Qiang Fu, a University of Washington atmospheric sciences associate professor, earlier examined measurements collected from January 1979 through December 2001 by devices called microwave-sounding units on National Oceanic and Atmospheric Administration satellites. Different channels of the microwave-sounding units measure radiation at different frequencies, providing data for different layers of the atmosphere.
In the case of the troposphere, the layer from the surface to an altitude of about 7.5 miles, where most weather occurs, it was believed there had been less warming than what was recorded at the surface. However, Fu’s team determined the satellite readings of the troposphere were imprecise because about one-fifth of the signal actually came from a higher atmosphere layer called the stratosphere, which for the last few decades has been cooling several times faster than the troposphere has been warming. The group devised a method to remove the stratosphere signal from the satellite data and was left with results that closely matched the warming at the surface. That work was published in May in the journal Nature.
Vince Stricherz | EurekAlert!
Diving robots find Antarctic seas exhale surprising amounts of carbon dioxide in winter
16.08.2018 | National Science Foundation
Diving robots find Antarctic winter seas exhale surprising amounts of carbon dioxide
15.08.2018 | University of Washington
There are currently great hopes for solid-state batteries. They contain no liquid parts that could leak or catch fire. For this reason, they do not require cooling and are considered to be much safer, more reliable, and longer lasting than traditional lithium-ion batteries. Jülich scientists have now introduced a new concept that allows currents up to ten times greater during charging and discharging than previously described in the literature. The improvement was achieved by a “clever” choice of materials with a focus on consistently good compatibility. All components were made from phosphate compounds, which are well matched both chemically and mechanically.
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New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference
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Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
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Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
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20.08.2018 | Information Technology