The atmospheric flow is strongly affected by the complex shape of its lower boundary, i. e. the orography. The orographic forced uplift of air masses may extend for several kilometers up into the troposphere, influencing many atmospheric processes such as the precipitation formation. Focusing the attention on large meso-scale circulation, a simplified fluid-dynamical scheme is formulated, based on the inviscid hydrostatic equations for the moist atmosphere Assuming a slow evolution of the main meteorological forcing, such as in the presence of frontal circulation, a meso-scale diagnostic model is delineated, where the input is given from synoptic-scale analysis and/or predictions. A preliminary linearized version of the model is tested on a real case study over the Apennine chain (Central Italy) and the results are briefly discussed.
Fluid-dynamical modeling of atmospheric flow over complex orography
CORRADINI, Corrado
1995
Abstract
The atmospheric flow is strongly affected by the complex shape of its lower boundary, i. e. the orography. The orographic forced uplift of air masses may extend for several kilometers up into the troposphere, influencing many atmospheric processes such as the precipitation formation. Focusing the attention on large meso-scale circulation, a simplified fluid-dynamical scheme is formulated, based on the inviscid hydrostatic equations for the moist atmosphere Assuming a slow evolution of the main meteorological forcing, such as in the presence of frontal circulation, a meso-scale diagnostic model is delineated, where the input is given from synoptic-scale analysis and/or predictions. A preliminary linearized version of the model is tested on a real case study over the Apennine chain (Central Italy) and the results are briefly discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
