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.
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http://adsabs.harvard.edu/abs/1993apet.agar.....L
Title:
Propagation modeling of moist air and suspended water/ice particles
at frequencies below 1000 GHz
Authors:
Liebe, H. J.; Hufford, G. A.; Cotton, M. G.
Affiliation:
National Telecommunications and Information Administration, Boulder,
CO.
Publication Date:
11/1993
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.
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