Sentences with phrase «atmospheric absorption of»

The popular explanation of the greenhouse effect as the result of the LW atmospheric absorption of the surface radiation and the surface heating by the atmospheric downward radiation is incorrect, since the involved flux terms (AA and ED) are always equal.

In other words, are they stating that atmospheric absorption of solar insolation, plus conduction from the surface makes the net flow between the surface and atmosphere nearly zero.

He showed that atmospheric absorption of long - wave radiation was constant for 61 years while at the same time carbon dioxide increased by 21.6 percent.

Instead the entire atmosphere would slowly get warmer as CO2 and water vapor were added (assuming no atmospheric absorption of incoming solar radiation).

The dimming was shown to be accompanied by significant atmospheric absorption of solar radiation by black and brown carbon (a form of organic carbon).

(I neglect here atmospheric absorption of IR by water, but that should not mediate cooling at any level.

Instead the entire atmosphere will get warmer (assuming no atmospheric absorption of incoming solar radiation).

Not exact matches

In addition, the unmanned drones provide a new and relatively cheap method for measuring such atmospheric effects, such as powerful storms or the absorption of sunlight in regular clouds.

Magnesium lines are critical for determining a black holes mass, but for objects at this distance, the redshifting of the light makes them extremely difficult to capture from the surface of our planet due to absorption by atmospheric water vapor.

IUVS also created a map of the atmospheric ozone on Mars by detecting the absorption of ultraviolet sunlight by the molecule.

Tests from one to 50 atmospheric pressures showed the Rice compound captured a fifth of its weight in carbon dioxide but no measurable amount of methane, Barron said, and the material did not degrade over many absorption / desorption cycles.

«It is ironic that high concentrations of molecules with high global warming potential (GWP), the worst - case scenario for Earth's climate, is the optimal scenario for detecting an alien civilization, as GWP increases with stronger infrared absorption and longer atmospheric lifetime,» say the authors.

There is also a contribution of excess atmospheric CO2 absorption introduced to deep - water masses from dense, cold CO2 - rich surface waters at downwelling sites (e.g., North Atlantic), which then move through the oceans via meridional overturning circulation.

Since each of the infrared - absorbing atmospheric gases has its own unique absorption spectrum, the total infrared absorption capacity of the atmosphere is then due to the real - time concentration and distribution of all the gases in the atmosphere, from the surface to the stratosphere.

The definition uses atmospheric databases called HITRAN (high - resolution transmission molecular absorption) and HITEMP (high - temperature spectroscopic absorption parameters) that characterize planetary atmospheres in light of how both carbon dioxide and water are absorbed.

Although the absorption of atmospheric CO2 by the ocean helps limit climate warming, it also changes seawater chemistry and causes ocean acidification.

Using the bright light generated by these stars, researchers will be able to use spectroscopy — a technique that measures the absorption and emission of light — to determine a planet's mass, density and atmospheric composition, which could provide insights into whether or not it harbors life.

These data link the Arctic Ocean's largest area of aragonite undersaturation to sea ice melt and atmospheric CO2 absorption in areas of low buffering capacity.

The paintings and sculptures of Glenn Brown are deliquescent in the physical sense of the term, the property possessed by certain solid substances of slow liquefaction by gradual absorption of atmospheric humidity.

The reason for this is as follows: Carbon dioxide has three absorption bands at wavelengths of 4.26, 7.52, and 14.99 micrometers (microns).13 The Earth's emission spectrum, treated as a black body (no atmospheric absorption), peaks at between 15 and 20 microns, and falls off rapidly with decreasing wavelength.

It also seems that even though the selective absorption of specific energy bands by different molecules IS the mechanism to add energy to the air, the energy absorbed by CO2 & especially Water Vapor is extremely rapidly dispersed by molecular collisions to ALL the components of the atmosphere, so that the N2 and O2 also heatup, and all the atmospheric components assume a uniform temperature (ie global warming).

An important factor is that atmospheric pressure strongly affects the absorption spectra of gases, a phenomenon called pressure broadening.

Since each of the infrared - absorbing atmospheric gases has its own unique absorption spectrum, the total infrared absorption capacity of the atmosphere is then due to the real - time concentration and distribution of all the gases in the atmosphere, from the surface to the stratosphere.

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.»

The processes (absorption of light, collisional energy transfer and emission) can be separated because the average time that an isolated CO2 molecule takes before it emits a photon is much longer that the time for collisional de-excitation (~ tens of microseconds at atmospheric pressure, less, higher in the atmosphere).

The total amount of LW atmospheric absorption at the eventual (statistical) steady state will be larger than the 4W / m2 forcing (probably about 10 - 20 W / m2), hence implying that the eventual temperature rise will be larger than the «no - feedback» response.

Well, if we add atmospheric absorption to wavelengths just outside the first band, there could be initial cooling of lower levels and warming of upper levels as explained in 1b, which will be enhanced if this is added at shorter wavelengths (reduced if addeed at longer wavelengths) relative to where the initial atmopsheric absorption was (see 438).

The reason for scientific concern over global warming rests on basic physics — infrared absorption — and robust measurements of atmospheric gas concentrations.

All other changes (from feedbacks), as you say, lead to larger «total amount of LW atmospheric absorption», which looks like the same object as the one being forced by «that initial change.»

Does atmospheric CO2 then start to decline as a result of these absorption processes, or are those sinks just taking up the excess, or will the warm Arctic permafrost emissions rule this out?

Thus, if the absorption of the infrared emission from atmospheric greenhouse gases reduces the gradient through the skin layer, the flow of heat from the ocean beneath will be reduced, leaving more of the heat introduced into the bulk of the upper oceanic layer by the absorption of sunlight to remain there to increase water temperature.

Refering to bands where optical thickness is constant over the interval of each band, if the atmospheric LW absorption is limited to some band (that doesn't cover all LW radiation), than increases in OLR in response to surface warming will occur outside that band, so OLR will drop within the band — there will still be some portion of stratospheric or near - TOA cooling that will be transient, but some will remain at full equilibrium.

Because of atmospheric absorption and emission, IR at any level will not be coming only from the surface, but that is where it will all originate.

The ones that are most relevant today though are those that affect atmospheric absorption and reflection of radiation, and surface impacts on either radiative or hydrologic fluxes.

With one band (along with the convective lapse rate below the tropopause) establishing the atmospheric temperature profile, adding some other band of absorption may result in some different pattern of temperature change.

So, it is not only the units are the same, but the object is the same, the «amount of LW atmospheric absorption».

At much longer wavelengths, given the surface temperature (which won't change much by introducing a small amount of absorption), the skin temperature would only be a bit more than half of the surface temperature (example: for a surface temperature of 250 K and a small amount of atmospheric absorption at 200 microns, the skin temperature would be about 56 % of the surface temperature), which could be less than the temperature even at TOA.

Moreover, the atmospheric temperature gradient is mitigated by the absorption of solar radiation within the atmosphere (also latent heat deposition), thus a more moderate temperature gradient is established within the ral atmosphere.

CO2 also becomes a more effective greenhouse gas at higher atmospheric pressures (even if super-imposed upon several more bars of a non-greenhouse gas like N2 would generate a much stronger GHE by increasing absorption away from line centers).

The basic ingredients are easy to list: — absorption / emission properties (or spectroscopic parameters) of CO2 at atmospheric pressures, i.e. data presently available from HITRAN - database combined with models of line broadening — observed properties of the atmosphere where most important features include clouds and moisture content, but many other factors have some influence — computer model of the transmission of radiation along the lines of MODTRAN or GENLN2

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 atmosphere of Venus is mostly CO2 but the atmospheric heat arises as a result of the mass and density of the Venusian atmosphere (apparently more than 90 times that of the Earth) not just the absorption characteristics of CO2.

The radiative absorption capability of CO2 allows atmospheric molecules to reach a higher temperature than that imparted to them by energy at the surface so they rise to a higher location than would be predicted from their weight and their individual gas constants.

John Carter August 8, 2014 at 12:58 am chooses to state his position on the greenhouse effect in the following 134 word sentence: «But given the [1] basics of the greenhouse effect, the fact that with just a very small percentage of greenhouse gas molecules in the air this effect keeps the earth about 55 - 60 degrees warmer than it would otherwise be, and the fact that through easily recognizable if [2] inadvertent growing patterns we have at this point probably at least [3] doubled the total collective amount in heat absorption and re-radiation capacity of long lived atmospheric greenhouse gases (nearly doubling total that of the [4] leading one, carbon dioxide, in the modern era), to [5] levels not collectively seen on earth in several million years — levels that well predated the present ice age and extensive earth surface ice conditions — it goes [6] against basic physics and basic geologic science to not be «predisposed» to the idea that this would ultimately impact climate.»

The data indicates that as the atmospheric concentration has increased, the absorption rate of the oceans and vegetation has also increased which is keeping the annual increase lower than it would have been.

But Miskolczi was able to show, using NOAA database of weather balloon observations that goes back to 1948, that atmospheric absorption IR radiation has been constant for the last 61 years.

About a little under 1 / 3rd of atmospheric absorption is from CO2 and other GHGs and over 2 / 3rds is from water vapor.

Thus, the phase change of water from liquid to gas, after absorbing photons, is a feedback, the absorption of photons and the emission of photons atmospheric water vapor is a forcing, but the photons released when gaseous water become liquid water is a feedback.

For example, as atmospheric concentrations of CO2 increase, every tonne of carbon dioxide has less of an effect on warming (the strongest absorption bands are already saturated).

The principles of absorption and emission of radiation by various atmospheric trace gases like water vapor and CO2 rely on the theory of quantum mechanics.