Sentences with phrase «infrared atmospheric radiation»

Walter spent the years 1937 - 41 analyzing the properties of far - infrared atmospheric radiation from first principles.

Not exact matches

«Volcanic aerosols in the stratosphere absorb infrared radiation, thereby heating up the stratosphere, and changing the wind conditions subsequently,» said Dr. Matthew Toohey, atmospheric scientist at GEOMAR Helmholtz Centre for Ocean Research Kiel.

Instead of dissipating into space, the infrared radiation that is absorbed by atmospheric water vapor or carbon dioxide produces heating, which in turn makes the earths surface warmer.

I developed and host a web interface to the modtran model of atmospheric infrared radiation, an early example of a line - by - line code which I downloaded and use to teach and as part of a textbook.

SkinCeuticals defines atmospheric aging as the visible result of a range of environmental aggressors on skin, including UV, infrared radiation (IRA), and pollution.

Phloretin CF features a patented synergistic combination of 2 % phloretin, 10 % pure vitamin C (l - ascorbic acid), and 0.5 % ferulic acid for enhanced protection against atmospheric skin aging — environmental damage and premature signs of aging caused by free radicals from UVA / UVB, infrared radiation (IRA), and ozone pollution (O3).

Examples of magnetic dipole radiation are the well - known atmospheric absorption bands of oxygen in the red... and the new infrared atmospheric absorption band of O2, at 1.27 microns.»

Much of the radiation from the atmospheric gases, also in the infrared range, is transmitted back to the ocean, reducing the net long wave radiation heat loss of the ocean.

This is not the definition of «greenhouse effect» that is commonly used in climate science, whereby it relates to the atmospheric emission and absorption of infrared radiation.

«The trapping of thermal infrared radiation by atmospheric gases is typical of the atmosphere and is therefore called the atmospheric effect.

2) I've read that atmospheric CO2 acts like a dam: when it warms up, it emits more and more infrared radiation in all directions, one of those directions being back down to Earth.

radiative forcing a change in average net radiation at the top of the troposphere resulting from a change in either solar or infrared radiation due to a change in atmospheric greenhouse gases concentrations; perturbance in the balance between incoming solar radiation and outgoing infrared radiation

«It is possible that an increase in concentration of atmospheric gases which absorb the outgoing infrared radiation could result in a rise in average global temperature,» William McCollam, Jr., then president of EEI, admitted to Congress in 1989.

In 1928, George Simpson published a memoir on atmospheric radiation, which assumed water vapour was the only greenhouse gas, even though, as Richardson pointed out in a comment, there was evidence that even dry air absorbed infrared radiation.

At the temperature the atmosphere is, it radiates infrared so this radiation interacts with the atmospheric matter exactly in the same way as the radiation emitted by the ground does.

These so - called greenhouse gases absorb infrared radiation, emitted by the Earth's surface, the atmosphere and clouds, except in a transparent part of the spectrum called the «atmospheric window», as shown in Figure 1.2.

Conversely, as atmospheric concentrations of carbon dioxide, methane, chlorofluorocarbons, and other absorbing gases continue to increase, in large part owing to human activities, surface temperatures should rise because of the capacity of such gases to trap infrared radiation.

Why do so many folks keep trying to explain atmospheric temperatures with only infrared radiation?

Traditional anthropogenic theory of currently observed global warming states that release of carbon dioxide into atmosphere (partially as a result of utilization of fossil fuels) leads to an increase in atmospheric temperature because the molecules of CO2 (and other greenhouse gases) absorb the infrared radiation from the Earth's surface.

Since then, satellite reading of temperatures and the occlusion of numerous infrared bands, ground based, aircraft and balloon measurements of same, and an ever - increasing data base of the optical properties of CO2 (and other gases, like water vapour), have helped refine radiation calculations towards determining the atmospheric heat budget.

The incoming Sun's radiation is 3.5 times greater in intensity than the outgoing Earth's radiation, hence the Sun's infrared is 1.6 times greater in intensity than the Earth's radiation and experiences the same atmospheric absorption spectra as the Earth radiation.

He deduced that the cooperation of these gases has to take the form of an optimal atmospheric transmittance window for infrared radiation, such that if the concentration of one gas, say carbon dioxide, varies and changes atmospheric transmittance, the other components, such as water vapor, will have to compensate for it by changing their concentrations.

The effect under investigation must play a very important role in atmospheric phenomena: it is one of the sources of Earth's cooling; formation of hailstorm clouds in the atmosphere is accompanied by intensive characteristic infrared radiation that could be detected for process characterization and meteorological warnings.

Greenhouse gas concentrations affect the atmospheric optical depth for infrared radiation, and increased opacity implies higher altitude from which earth's equivalent bulk heat loss takes place without being re-absorbed.

«This H2O negative - feedback effect on CO2 is ignored in models that assume that warm moist air does not rise and form sunlight - reflecting clouds, but remains as humid air near sea level, absorbing infrared radiation from the sun, and approximately doubling the temperature rises predicted from atmospheric CO2 increases.

4 Greenhouse Effect Certain atmospheric gases trap some of the infrared radiation that escapes from the Earth, making the Earth warmer than it would be otherwise.

Radiation at ultraviolet wavelengths dissociates atmospheric molecules, initiating chains of chemical reactions — specifically those producing stratospheric ozone — and providing the major source of heating for the middle atmosphere, while radiation at visible and near - infrared wavelengths mainly reaches and warms the lower atmosphere and the Earth's surface1.

CO; 2 Observations of the Infrared Radiative Properties of the Ocean «[I] t is necessary to understand the physical variables contributing to sea surface emitted and reflected radiation to space.The emissivity of the ocean surface varies with view angle and sea state, the reflection of sky radiation also depends on view angle and sea state, and the absorption of atmospheric constituents such as water vapor, aerosols, and subdivisible clouds affect transmittance.»

(Plass, who worked for Lockheed on the practical problem of using infrared radiation to guide missiles, «moonlighted» on studies of the radiative effects of atmospheric CO2, and was the first to use computers to perform the lengthy calculations necessary to achieve a really accurate quantitative picture of radiative transfers throughout the atmosphere.)

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.

Greenhouse gases affect the atmospheric optical depth for infrared radiation, and increased opacity implies higher altitude from which earth's equivalent bulk heat loss takes place.

Past interglacial warming were triggered by sharp spikes in solar irradiation associated with the Earth's position relative to the sun (Milankovic cycles), with consequent feedback release of greenhouse gas (CO2, CH4) from the oceans and the biosphere, resulting in atmospheric infrared radiation effects and in melting of ice sheets, which amplify global warming.

This is the main infrared database used by atmospheric radiation modellers.

If the anthropogenic global warming theory was correct, the infrared «back - radiation» should have instead increased year - round over the past 14 years along with the steady rise in atmospheric carbon dioxide.

The idea is: outgoing infrared radiation stimulates atmospheric CO2 which heats up and «back radiates» to the earth... making us hotter.

In the thread on Confidence in Radiative Transfer Models, we argued that line - by - line radiative transfer codes and the best band models can accurately simulate clear sky (no clouds, aerosols) infrared radiation fluxes at the surface provided that the vertical profiles of atmospheric temperature and trace gas concentrations are specified accurately.

Radiative Forcing A change in average net radiation (in W m - 2) at the top of the troposphere resulting from a change in either solar or infrared radiation due to a change in atmospheric greenhouse gases concentrations; perturbance in the balance between incoming solar radiation and outgoing infrared radiation.