Sentences with phrase «radiation by greenhouse gases»

, the complete mis - understanding of the Harries et al (2001) paper showing satellite evidence for the increased trapping of long wave radiation by greenhouse gases etc..

«Robert H. Essenhigh developed a comprehensive thermodynamic model of the lapse rate based on the Schuster - Schwarzschild integral (S - S) Equations of Transfer that govern radiation through the atmosphere including absorption and radiation by greenhouse gases»

We all have been told that the greenhouse effect is due to the absorption of outgoing infrared radiation by greenhouse gases such as carbon dioxide in the atmosphere.

In both cases the air is warmed by the absorption of IR radiation by greenhouse gases.

«''»»» JT says: May 7, 2011 at 8:34 pm Ira, the basic bookkeeping of the simplest greenhouse calculations assumes that the re-emission of infra - red radiation by the greenhouse gas molecules is spatially symmetrical.

Not exact matches

Marshalling convincing scientific data, they tell us that the environmental degradation caused by massive pollution of air water and land, threatens the very life of earth — fast depletion of non renewal resources, indeed of species themselves, the thinning of the ozone layer that exposes all living creatures to the danger of radiation, the build up of gases creating the greenhouse effect, increasing erosion by the sea — all these are brought out through their research.

Solar radiation management attempts to offset effects of greenhouse gases by causing Earth to absorb less solar radiation.

The researchers [3] quantified China's current contribution to global «radiative forcing» (the imbalance, of human origin, of our planet's radiation budget), by differentiating between the contributions of long - life greenhouse gases, the ozone and its precursors, as well as aerosols.

And ozone, which forms a beneficial shield against ultraviolet radiation when high in the stratosphere, is an efficient greenhouse gas when it appears at airliner altitudes — as it increasingly does, since it too is a by - product of fossil fuel burning.

In the mid atmosphere, the excitiation from collisions and radiation from other greenhouse gas molecules is matched by the emission from the greenhouse gas molecules and their de-excitation by collisions, LTE.

The first error is to calculate the radiation re-emitted by greenhouse gases based on Planck's function, which uses the temperature of the layer.

It's not totally about how much infrared from the surface that is blocked (currently about 90 % of surface emissions is absorbed by greenhouse gases), its also about the height within the atmosphere from which radiation escapes.

It should be pointed out here, that the amount of change in downward heat radiation from changes in cloud cover in the experiment, are far greater than the gradual change in warming provided by human greenhouse gas emissions, but the relationship was nevertheless established.

Greenhouse gases (which prevent dispersal of heat generated by the planet's surface, after this receiving solar radiation) of higher concentration on Earth are carbon dioxide (CO2), methane (CH 4), nitrous oxide (N2O), Compounds of chlorofluorocarbon (CFC) and water vapor (H2O).

Much of this radiation is returned to the space and the other part is absorbed by the layer of gas surrounding atmosphere causing the greenhouse effect.

The greenhouse gases absorb some infrared radiation emitted by the surface of the Earth and in turn radiate the absorbed energy back to the surface.

The warming trends in looking at numerous 100 year temperature plots from northern and high elevation climate stations... i.e. warming trends in annual mean and minimum temperature averages, winter monthly means and minimums and especially winter minimum temperatures and dewpoints... indicate climate warming that is being driven by the accumulation of greenhouse gases in the atmosphere — no visible effects from other things like changes in solar radiation or the levels of cosmic rays.

ABM: The whole point about the greenhouse gases in a planetary atmosphere is that they absorb the infrared radiation emitted by the surface, and so Kirchhoff's law does not apply.

I can prove by the laws of radiation / heat physics they too are «greenhouse gases».

In the mid atmosphere, the excitiation from collisions and radiation from other greenhouse gas molecules is matched by the emission from the greenhouse gas molecules and their de-excitation by collisions, LTE.

Because the lapse rate is not zero, changing the altitude near the top of the atmosphere where infrared radiation escapes freely to space allows adjustment of the surface temperature by means of the addition of greenhouse gases.

I find it difficult to see how the greenhouse gases, which create lines and bands in the blackbody spectrum of the Earth's radiation field, can also be radiating with an intensity determined by Planck's function.

However if that is so, please note that in the real world the radiation emitted by each layer originates only from the the greenhouse gases, and is not cavity radiation.

You can think of a greenhouse gas as a form of albedo that operates on the infrared radiation emitted by the Earth.

Thus it is very difficult for the ocean to transmit heat by long wave radiation into the atmosphere; the greenhouse gases just kick it back, notably water vapor whose concentration is proportional to the air temperature.

«Atmospheric greenhouse gases such as carbon dioxide can raise the temperature of the Earth's surface by absorbing some of the far - infrared radiation emitted by Earth and re - emitting it isotropically.»

A side point here is that the ocean loses heat by radiation to both the air (thanks to greenhouse gases) and to space, and to the atmosphere by direct conduction and this, via convection and radiation, ultimately to space.

This will clear up any confusion about non-greenhouse gases not being able to emit and absorb thermal radiation i.e. the mistaken notion that an atmosphere without greenhouse gases would not be able to cool itself by thermal radiation.

It's because both land and ocean surfaces are heated by shortwave solar radiation and where aerosols reflect SWR equally well over land or water and where greenhouse gases work by retarding the rate of radiative cooling which is not equal over land and water.

But most of the infra - red radiation emitted by the earth's surface is absorbed in the atmosphere by water vapour, carbon dioxide, and other naturally occurring «greenhouse gases», making it difficult for the surface to radiate energy directly to space.

As LST closely tracks air temperatures over the instrumental period, we can also infer that air temperatures in this region of East Africa varied in concert with the global average and thus were controlled primarily by the major forcings influencing temperatures over this timescale, both natural (solar radiation, volcanism) and anthropogenic (greenhouse - gas emissions; refs 19, 20).

The heat caused by infrared radiation is absorbed by greenhouse gases such as water vapor, carbon dioxide, ozone and methane, which slows its escape from the atmosphere.

But for e.g. undergraduate lessons simple models only taking radiation transport by greenhouse gases together with the distribution of solar radiation are sufficient to demonstrate the effect of greenhouse gases on the earth troposphere and that they are essential to explain their basic thermal structure.

(The main components of the atmosphere — nitrogen and oxygen — are not greenhouse gases, because they are virtually unaffected by long - wave, or infrared, radiation).

The physics of greenhouse gases (= by definition gases that absorb thermal radiation) is essential to get appropriate physical models explaining the observations quantitatively and allow to evaluate what happen on changed conditions by virtual experiments.

It would have to be something that affected the net heat balance of the earth by affecting incoming radiation (solar inputs, aerosols, clouds), the reflectivity of the earth (ice caps, land use changes) or the ability of the surface to cool (greenhouse gases).

Only 6 % of that radiation is emitted by the surface, the rest is radiation from clouds and greenhouse gases in the atmosphere.

Some of this thermal radiation is then absorbed by greenhouse gases in the atmosphere and re-emitted in all directions, some back downwards, increasing the amount of energy bombarding the Earth's surface.

This is about the radiation from the Earth to space, which is prevented by the atmosphere's greenhouse gases, and as we pour more and more greenhouse gases into the atmosphere, less energy will be sent into space.

When heat energy gets released from Earth's surface, some of that radiation is trapped by greenhouse gases like CO2; the effect is what makes our planet comfy temperature-wise, but too much and you get global warming.

The radiatively active gases (H2O, CO2) on the other hand are like the holes (or opened windows) on a greenhouse, enabling the atmosphere to cool by radiation to space.

Greenhouse effect Greenhouse gases effectively absorb thermal infrared radiation, emitted by the Earth's surface, by the atmosphere itself due to the same gases, and by clouds.

Is this supposed to «prove» that visible light can not be absorbed by the earth, and hence can not be implicated in the radiation emitted by the earth and absorbed by greenhouse gasses?

Increasing concentrations of greenhouse gases such as carbon dioxide and methane increase the temperature of the lower atmosphere by restricting the outward passage of emitted radiation, resulting in «global warming,» or, more broadly, global climate change.»

Earth's Greenhouse Effect is described as all about radiant effects: Wiki: «The greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all dGreenhouse Effect is described as all about radiant effects: Wiki: «The greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all dgreenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all dgreenhouse gases, and is re-radiated in all directions.

Whether talking about this thermal IR from the sun OR the back radiation said to be caused by greenhouse gases.

The atmosphere is mainly warmed up by the Earth mass thru evaporation, convection, conduction, radiation not by greenhouse gasses or gases.

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.

The outgoing longwave radiation is absorbed by greenhouse gases in the atmosphere.

The longer wavelength (infrared) radiation created there is reflected upwards, and then is absorbed by clouds and the greenhouse gases (GHGs include carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), etc.).