Wave clouds over mountains |
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Authors: | M H Memarian V N Kozhevnikov L R Dmitrieva-Arrago |
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Institution: | 1.Department of Physics,Yazd University,Yazd,Iran;2.Moscow State University,Vorob’evy gory, Moscow,Russia;3.Hydrometeorological Research Center of the Russian Federation,Moscow,Russia |
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Abstract: | Main characteristics of the atmosphere disturbances over the mountains are calculated with a nonlinear two-dimensional stationary
model of the airstream over mountains depending on the properties of the unperturbed upstream. A spatial humidity distribution
over mountains is defined under assumption that water vapor is transported with airstreams like a passive pollutant. The derived
humidity fields and calculated temperature distribution are used for determining the spatial relative humidity distribution
over mountains. Critical values of the relative humidity in the interval of 70–100% are used for identifying the cloud zone
boundaries. The analysis is performed on the cloud zone dependence on vertical distribution of relative humidity in the upstream
and on the mountain form characteristics. The studies are conducted with a special reference to a complicated mountain relief
in Southern Zagros (Iran). |
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