On the Atmospheric Response to Urbanization and Open-Pit Mining under Various Geostrophic Wind Conditions |
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Authors: | N Mölders |
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Institution: | LIM?–?Institut für Meteorologie, Universit?t Leipzig, Leipzig, Germany, DE
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Abstract: | Summary Simulations alternatively assuming a real landscape with and without open-pit mines and grown settlements were performed
with a non-hydrostatic meteorological model of the meso-β-scale to elucidate whether the atmospheric response to such land-use
changes is sensitive to the direction and magnitude of geostrophic wind. The results of simulations with the same geostrophic
wind conditions substantiate that the daily domain-averages of the variables of state hardly differ for the different landscape
realizations, except for cloud- and precipitating particles. However, land-use changes may significantly affect the local
conditions over and downwind of the altered surfaces. The significant differences in the cloud- and precipitating particles,
however, are not bound to the surroundings of land-use changes. The vertical component of wind vector, which is modified by
the different heating of converted land-use, strongly affects cloud- and precipitation formation by the interaction cloud
microphysics-dynamics. The magnitude of atmospheric response changes under the various directions and speeds of geostrophic
wind for most of the field quantities and fluxes.
Received February 10, 1999 |
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