Sentences with phrase «atmosphere absorbs radiation»

The obvious conclusion is that if we are significantly changing how the planet atmosphere absorbs radiation and we don't have a clue about the effects, then we should be very afraid.

Soot particles in the atmosphere absorb radiation, but studies suggest their effect on cloud cover and thickness may promote an overall net cooling.

Whereabouts are those early 1950s precision measurements to be found which demonstrate that adding more carbon dioxide really would change how the atmosphere absorbed radiation?

Not exact matches

Darin Toohey, a professor at the University of Colorado's atmospheric and oceanic sciences department and one of the paper's authors, says black carbon absorbs shortwave radiation from the sun, causing the atmosphere to heat up.

The feeble glow of microwaves from the sun is absorbed by our air on the way down, anyway, so unless the core somehow also strips off Earth's atmosphere — in which case we have bigger problems than solar radiation — we should be safe enough from microwaves if our planet's center stops spinning.

This involves determining the composition of a planetary atmosphere by measuring its spectra, the distinctive radiation that gases absorb at their own particular wavelengths.

Four - pronged impact Like carbon dioxide, black carbon absorbs sunlight and infrared radiation, trapping heat in the atmosphere — including the boundary layer closest to Earth's surface.

Geoengineering schemes use two ways to offset this process: They either remove the gases from the atmosphere, allowing more radiation to exit, or deflect a portion of the sun's light — about 1.8 percent should do the trick — reducing the amount of radiation absorbed by the earth.

When these gamma rays reach the Earth's atmosphere they are absorbed, producing a short - lived shower of secondary particles that emit weak flashes of bluish light known as Cherenkov radiation, lasting just a few billionths of a second.

The team also presented the first observational evidence that WASP - 33b's atmosphere contains titanium oxide, one of only a few compounds that is a strong absorber of visible and ultraviolet radiation and capable of remaining in gaseous form in an atmosphere as hot as this one.

These so - called starbursts are difficult to observe from Earth, as their dusty shrouds absorb much of the optical light from the stars and re-radiate it as longer - wavelength radiation to which Earth's atmosphere is mostly opaque.

Black carbon warms the atmosphere because of its ability to absorb radiation from the sun, but its effect can be especially pernicious in polar regions, where, falling on bright ice, the soot diminishes the regions» ability to reflect away heat.

The formation of a stratosphere layer in a planet's atmosphere is attributed to «sunscreen» - like molecules, which absorb UV and visible radiation coming from the star and then release that energy as heat.

At some of these overlaps, the atmosphere already absorbs 100 % of radiation, meaning that adding more greenhouse gases can not increase absorption at these specific frequencies.

A: Global warming occurs when carbon dioxide (CO2) and other air pollutants and greenhouse gases collect in the atmosphere and absorb sunlight and solar radiation that have bounced off the earth's surface.

Most types of electromagnetic radiation, except for visible light and radio waves, are absorbed by the Earth's atmosphere.

Because X-ray radiation is absorbed in Earth's atmosphere, space - based instruments are necessary to study it.

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.

The formation of a stratosphere layer in a planet's atmosphere is attributed to «sunscreen» - like molecules, which absorb ultraviolet (UV) and visible radiation coming from the star and then release that energy as heat.

Under ultraviolet light examination, transient dark and bright stripes mark Venus» atmosphere, indicating regions where Solar ultraviolet radiation is either absorbed or reflected, respectively (more from Venus Express and APOD).

An ice - free Arctic Ocean absorbs solar radiation during the long summer days, and evaporates more water into the Arctic atmosphere.

Whether being lesser than CO2 in number of molecules in the atmosphere, methane is a potent greenhouse gas absorbing more infra - red radiation per molecule than CO2.

However, Earth's atmosphere complicates matters, because it absorbs most of the radiation.

The shorter wavelengths of IR radiation can penetrate the atmosphere, but as its wavelength reaches one micrometre, IR radiation tends to be absorbed by water vapour and other molecules in the atmosphere.

The amounts that are in Pluto's atmosphere are enough to absorb infrared radiation (heat) from the sun and warm the upper atmosphere.

If the surface plus atmosphere together acts as a gray body at 288 K with e = 0.61, then only 61 % of incoming solar radiation at thermal infrared wavelengths (a small fraction of the total) will be absorbed.

So with more carbon dioxide in the atmosphere, we expect to see less longwave radiation escaping to space at the wavelengths that carbon dioxide absorb.

14 C is produced by thermal neutrons from cosmic radiation in the upper atmosphere, and is transported down to earth to be absorbed by living biological material.

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.

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.

So I agree with William, the cooling effect at the top of the atmosphere requires that the atmosphere be absorbing some incoming radiation (and that this absorption be (mostly) by non-greenhouse gasses).

Isn't one important feature of cooling the stratosphere by emitting heat absorbed by ozone from incoming shortwave radiation, that this cooling has little effect on lower parts of the atmosphere since there is not much mixing between these air masses?

Second even if we ignore convection (and assume all warming of the atmosphere is from below, ie no incoming solar radiation is absorbed in the atmosphere) it is not the case that the atmosphere temperatures will «pivot» around some fixed level (increasing below it and falling above it).

The radiation is not absorbed throughout the full height of the atmosphere, passing through it rather like an electric current through a conductor.

If we are talking about clear atmosphere, then no, because the radiation will be ONLY at exactly those frequencies where the greenhouse gases above and below absorb / emit.

Barton, For the atmosphere to be in thermodynamic equilibrium, the greenhouse gases must be emitting as much radiation as they absorb.

Suppose further that a fraction «a» of the incoming shortwave radiation is absorbed in the atmosphere (with the remainder being absorbed by the ground).

Hypothesis A — Because the atmospheric radiation is completely absorbed in the first few microns it will cause evaporation of the surface layer, which takes away the energy from the back radiation as latent heat into the atmosphere.

This knowledge is not new; the same year as Charles Darwin published «The Origin of Species», John Tyndall, an Irish scientist, published a paper in 1859 describing how he measured the absorption of infrared radiation in his laboratory, finding that CO2 and water vapour absorbed the radiation, whereas nitrogen and oxygen, the main gases in the atmosphere, do not.

If there is more CO2 in the atmosphere then more of the outgoing LW radiation will be absorbed by the CO2.

Of the energy absorbed by the ocean, most is released locally to the atmosphere, mostly by evaporation and infrared radiation...

The imbalance is not between IR absorbed and IR emitted by a layer of atmosphere, but between the incoming shortwave solar energy from space and the outgoing longwave energy emitted to space, due to the increasing difference between the ground temperature and the temperature of the level from which re-emitted radiation can escape to space.

Words only have meaning in context and while it may be true that water vapor is a greenhouse gas in the sense that more of it in the atmosphere will absorb more infrared radiation and warm the climate, it is not a greenhouse gas in the sense that it is a gas we need to seriously worry about adding directly to the atmosphere.

In the presence of an atmosphere (which absorbs / emits in the thermal IR radiation) the picture is different.

CO2 (and some other gases) in the atmosphere are however more opaque to LWIR; they absorb that a chunk of that outgoing radiation and re-radiate it in all directions — so that a fraction less than half is re-radiated downwards; which has the effect of slowing the transfer of heat (by radiation) out of the atmosphere.

ie does a slightly lower density of air mean a slightly lower ground level temperature (temperature normally decreases with height at the lower air density), so that in reality adding CO2 and subtracting more O2 actually causes miniscule or trivial global COOLING, and the (unused) ability of the changed atmosphere to absorb radiation energy and transmit it to the rest of the air is overruled or limited by the ideal gas law?

Less TOA cooling will occur if bands are placed where, in the upper atmosphere or near TOA, they absorb more of the increases in radiation from below from surface + tropospheric (+ lower stratospheric) warming.

With some LW absorbing optical thickness, the atmosphere can emit radiation to space, so some heat will flow into the atmosphere from where solar heating occurs to get to space.

1) Greenhouse gasses absorb infrared radiation in the atmosphere and re-emit much of it back toward the surface, thus warming the planet (less heat escapes; Fourier, 1824).

In reply to # 1, greenhouse gases absorb selective bands of radiation in the atmosphere and re-radiate them in all directions as longer wave infrared.