On May 17, 5:33=A0am, ayaz <hackedyetag...@[EMAIL PROTECTED]
> wrote:
> i couldn't find an article on co2 distribution but i understand that
> co2 is not uniformly distributed but rather appears in concentrations
> over certain areas. this would further suggest the inconsistency in
> the global warming debate.
>
>
-------------------------------http://adsabs.harvard.edu/abs/1993apet.agar=
......L
>
> Title:
> =A0Propagation modeling of moist air and suspended water/ice particles
> at frequencies below 1000 GHz
> Authors:
> =A0Liebe, H. J.; Hufford, G. A.; Cotton, M. G.
> Affiliation:
> =A0National Telecommunications and Information Administration, Boulder,
> CO.
> Publication Date:
> =A011/1993
>
> Propagation characteristics of the atmosphere are modeled for the
> frequency range from 1 to 1000 GHz (1 THz) by the modular millimeter-
> wave propagation model MPM. Refractivity spectra of the main natural
> absorbers (i.e., oxygen, water-va****, suspended droplets and ice
> particles) are computed from known meteorological variables. The
> primary contributions of dry air come from 44 O2 lines. Results from
> extensive 60-GHz laboratory measurements of the pressure-broadened O3
> spectrum were applied to update the line data base. The water-va****
> module considers 34 local H2O lines plus continuum contributions from
> the H2O spectrum above 1 THz, which are formulated as wing response of
> a pseudo-line centered at 1.8 THz Cloud/fog effects are treated with
> the Rayleigh approximation employing revised formulations for the
> permittivities of water and ice. The influence of the Earth's magnetic
> field on O2 absorption line becomes noticeable at altitudes between 30
> and 120 km. Anisotropic medium properties result, which are computed
> by the Zeema propagation model ZPM. Here the elements of a complex
> refractivity tensor are determined in the vicinity (plus or minus 10
> MHz) of O2 line centers and their effect on the propagation of plane,
> polarized radiowaves is evaluated. A spherically stratified (0-130 km)
> atmosphere provides the input for the codes MPM and ZPM in order to
> analyze transmission and emission properties of radio paths. Height
> profiles of air and water va**** densities and of the geocoded magnetic
> field are specified. ZPM predicts polarization- and direction-
> dependent propagation through the mesosphere. Emission spectra of the
> 9+ line (61150 plus or minus 3 MHz) for paths with tangential heights
> ranging from 30 to 125 km are consistent with data measured by the
> shuttle-based millimeter-wave limb sounder MAS.
would it not be sensible to have as part of the weather forecast,
stats on the production and distribution of oxygen and oxidative
agents?
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