Sentences with phrase «broadened absorption lines»

In 1926, the fainter component itself was found to be an eclipsing binary by Jan Schilt by photographic observations, which had already been suspected from a spectrum that showed rotationally broadened absorption lines.

Not exact matches

This can not be calculated by hand (the number of absorption lines and the effects of pressure broadening etc. preclude that), but it can be calculated using line - by - line radiative transfer codes.

For doppler - broadened (primarily stratospheric) lines, the absorption becomes logarithmic in absorber amount.

Basically, increased temperature means increased motion of the molecules, so the main thing that happens is the absorption lines get broadened.

Inceasing oxygen (for example form 20.9 to 30 percent) in my opinion would: Increasing scattering and so albedo, lowering temperature Increasing total pressure, broadening of absorption lines, rising temperature Increasing adiabate slope, rising SAT directly but decreasing water vapor, total effect??

For example simple spectroscopy dictates that the CO2 molecule vibrates, stretches, and rotates creating quantized absorption lines that are Doppler broadened and pressure broadened and absorb the infrared radiation coming from the warmed planet.

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

A higher layer is both cooler and less dense, so both the Doppler, and Collision broadening of the GHG absorption lines are reduced fro the higher layer but increased for a lower denser and warmer layer.

Where the Climate modelers missed the boat is in using equations for «line broadening» aka the «wings» where the current CO2 absorption (at 400 ppm) is supposedly taking place.

Doppler, collisional and pressure broadening increases the width of these absorption lines, so there is a finite (albeit at some wavelengths very small) absorptivity across the whole spectrum.

Mass change due to conceivable fossil fuel loading (up to say 16 × CO2) is unlikely to have much effect, but sensitivity is probably underestimated at high CO2 amounts owing to self - broadening of CO2 absorption lines.

The second effect comes from the fact that CO2 colliding with itself in a tube of pure CO2 broadens the lines about 30 % more than does CO2 colliding with N2 or O2 in air, which results in an additional slight overestimate of the absorption in the laboratory experiment.

«Abstract - Over 5000 absolute absorption values for pressure - broadened O2 lines in dry air were measured at frequencies from 49 to 67 GHz in O.l - GHz - increments.

Well the interaction time of two atoms or molecules in collision, is very much faster by many orders of magnitude, than the mean time between molecular collisions that result in pressure broadening of molecular absorption lines; and that means that the uncertainties in the emitted photon energies become extremely large.