Sentences with phrase «precise measurements of»
The issue is not whether precise measurements of atmospheric temperatures can ever be made from space.
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1950s: Research on military applications of radar and infrared radiation promotes advances in radiative transfer theory and measurements = > Radiation math — Studies conducted largely for military applications give accurate values of infrared absorption by gases = > CO2 greenhouse — Nuclear physicists and chemists develop Carbon - 14 analysis, useful for dating ancient climate changes = > Carbon dates, for detecting carbon from fossil fuels in the atmosphere, and for measuring the rate of ocean turnover = > CO2 greenhouse — Development of digital computers affects many fields including the calculation of radiation transfer in the atmosphere = > Radiation math, and makes it possible to model weather processes = > Models (GCMs)-- Geological studies of polar wandering help provoke Ewing - Donn model of ice ages = > Simple models — Improvements in infrared instrumentation (mainly for industrial processes) allow very precise measurements of atmospheric CO2 = > CO2 greenhouse.
This conclusion was based on precise measurements of the atmosphere's O2 / N2 ratio and indicates that the biosphere's response to increasing temperatures is to increase plant growth rates faster than decomposition rates.
Why do precise measurements of glacier motion often show stick - slip behaviour, that is, hours and hours of near motionlessness punctuated by half - hours of rapid movement?
«Precise measurements of temperature within the ocean confirm that the Earth is absorbing more energy from sunlight than it emits back to space, providing perhaps the strongest evidence to date that rising concentrations of greenhouse gases and other pollutants are the primary cause of the current global warming trend.
Precise measurements of the rising concentration of atmospheric CO2 are irrefutable, leaving nodoubtthatglobalwarmingis happening.
Playing the «devil's advocate,» Tim Ball has an essay in Watts Up With That explaining why he thinks the ice cores give little practical information, or at least are not precise measurements of temperatures and time - lines.
Photo: Augapfel, CC Taking Precise Measurements of the Microscopic Particles of Pollution in the Air What if we could have air pollution monitors on every street of every city without having to install any costly new high - tech equipment?
The compression view is used to obtain accurate and precise measurements of hip joint congruity.
The distraction view is used to obtain accurate and precise measurements of hip joint laxity.
Precise measurements of longevity risk are still unattainable because the limitations of medicine and its impact on life expectancies has not been quantified.
This is the message implicit in the game's structure, which asks students, in order to survive, to make a series of rational, calculated decisions based on precise measurements of their resources.
Whilst C / SiC composites have been considered to be promising for the mirrors and other structures of space - borne cryogenic telescopes, the anisotropic thermal expansion has been... ▽ More This paper presents highly precise measurements of thermal expansion of a «hybrid» carbon - fiber reinforced silicon carbide composite, HB - Cesic \ textregistered - a trademark of ECM, in the temperature region of \ sim310 - 10K.
Furthermore, the high resolution of the data collected will enable them to complete the most precise measurements of FRB properties to date — potentially making it easier to find additional FRBs elsewhere.
Spectroscopy of the star coupled with asteroseismic modeling of the multiple pulsation modes yield precise measurements of stellar properties, notably Teff = 5793 + / - 74 K, M = 1.079 + / - 0.051 Msun, R = 1.243 + / - 0.019 Rsun, and density 0.7903 + / - 0.0054 (cgs), all measured with fractional uncertainties of only a few percent.
Our results effectively show that a Michelson interferometer coupled to a spectrograph allows precise measurements of barycentric radial velocities even at a modest spectral resolution of R ~ 5100.
Additionally, precise measurements of the water signature of HAT - P - 26b were used to estimate its metallicity.
A European - led team will use the radio telescopes to make extremely precise measurements of the probe's position during its descent, while a U.S. - led team will concentrate on gathering measurements of the probe's descent speed and the direction of its motion.
Brisken and his colleagues used the VLBA to make precise measurements of the sky position of PSR B0656 +14 from 2000 to 2002.
• More precise measurements of stars orbiting closest to the Galactic Center's super-massive black hole;
Now highly precise measurements of the isotopes of an element that was still condensed at the «cut off» temperature when material started to fall back to Earth suggest a dramatic solution to the problem.
Verifying the functions of these glycoproteins requires precise measurements of the normal growth rates of crystals over time.
By making increasingly precise measurements of all the predictions of the standard model, researchers hope eventually to find cracks that lead the way to a larger theory to supersede it.
Having precise measurements of snow on sea ice is essential for NASA's upcoming Ice, Cloud, and land Elevation Satellite - 2 (ICESat - 2).
«Precise measurements of the energy of gamma - ray quanta which we were able to perform with the AGATA spectrometer, helped us to clarify two issues.
This will enable precise measurements of the moon's gravitational tug, which could help reveal whether Enceladus harbours a large internal ocean.
Such ultralow temperatures may allow scientists to make more precise measurements of time and gravity.
The VST KiDS survey will allow astronomers to make precise measurements of dark matter, the structure of galaxy halos, and the evolution of galaxies and clusters.
Like a versatile ruler of light with tens or hundreds of thousands of closely spaced «tick marks,» an optical frequency comb provides exquisitely precise measurements of light.
Because the atomic fountain allows extremely precise measurements of the energy levels of atoms, it may be possible to adapt the device to make an improved atomic clock.
Precise measurements of the motion of the gas using the Doppler shift in the spectral lines of the gas components revealed that 100 AU corresponds to the radius of the centrifugal barrier.
«Microbial communities for health and environment: Precise measurements of microbial ecosystems.»
Another benefit from these kinds of studies might be more precise measurements of transition energies in nuclei, a value that's tricky to measure, says physicist Fritz Bosch of the Institute for Heavy Ion Research in Darmstadt, Germany.
Fermilab's Holometer is currently the only machine with the ability to take these very precise measurements of space and time, and recently collected data has improved the limits on theories about exotic objects from the early universe.
In this study, the researchers, in collaboration with Cranfield University and the Scottish Universities Environmental Research Centre (SUERC), used acoustic thermometry to make the measurement by building an acoustic resonator and making amazingly precise measurements of the speed of sound in argon gas.
Møller and his team found the primordial filament by making precise measurements of remote blobs of glowing hydrogen gas, using ESO's Very Large Telescope in Chile.
A new way to test the theory of how stars work, which involves making precise measurements of the energy of neutrinos from the Sun, has been proposed by an American astrophysicist.
The study began with precise measurements of isotopes of iron and neodymium using one of the world's fastest lasers, housed in the UW - Madison geoscience department.
The approach taken by the JET Collaboration to achieve it, by combining efforts of several groups of theorists and experimentalists, shows how to make other precise measurements of properties of the quark gluon plasma in the future.»
The experiment makes precise measurements of the curvature of particle tracks in the detector's magnetic field and of the particles» time of flight, and uses this information to determine the mass - to - charge ratios for the nuclei and antinuclei.
Usually, it takes a nose to smell, but now — for the first time — scientists have developed a convincing model able to measure odours from pig farms by means of precise measurements of the content of odorants in the atmosphere.
In the past century, technological advances both provided and necessitated more precise measurements of time.
Kensuke Kobayashi (Professor, Graduate School of Science, Osaka University) and Sadashige Matsuo (Assistant Professor, Graduate School of Engineering, The University of Tokyo), in cooperation with research groups led by Teruo Ono (Professor, Institute for Chemical Research, Kyoto University) and Kazuhito Tsukagoshi (Research Fellow, International Center for Materials Nanoarchitectonics, National Institute for Materials Science), produced graphene samples capable of forming p - n junctions by combining gate electrodes and performed precise measurements of current - fluctuation («shot noise») in the graphene p - n junction in the QH regime in the strong magnetic fields and at low temperatures.
The study hinged on precise measurements of isotopes — atoms that are chemically identical but that have different masses.
Precise measurements of the relative positions of the Earth and moon make it possible to determine whether they are accelerated differently.
Bower says his team next will be taking more precise measurements of nearby low - mass stars to detect the telltale wobble in their motion that reveals orbiting extrasolar planets.
Where the literature was sparse, they tried to fill in the blanks by taking precise measurements of a healthy human leg and creating a mathematical model that spelled out how the different components of the leg interact.
Two of them will be part of the GRAIL mission — the Gravity Recovery and Interior Laboratory — now starting to make extremely precise measurements of the lunar gravitational field.
Mercury is known to have a slight wobble, or variability, in its spin, and precise measurements of the speed of the planet's spin may indicate whether it has a liquid or a solid center.
Precise measurements of the lunar gravity and rotation enable us to know how our natural satellite is deformed by tidal forces.