568454.fig.008a
(a) R0SF
568454.fig.008b
(b) R0FF
568454.fig.008c
(c) R10SF
568454.fig.008d
(d) R10S00
Figure 8: The averaged circulation in the vertical plane with orientation along the central axis of the valley. The velocity vectors represent the horizontal (along the valley) and vertical component of the wind. The wind speed (m s−1) is shown by isolines. Winds down the valley are indicated with blue isolines; winds in the opposite direction, with red isolines. Temperature anomalies (see the text for details) are shown through color. The gray shading shows the surface elevation. Four runs are shown: (a) R0SF: the thermally driven breeze circulation over the realistic relief of the surface (b) R0FF: the thermally driven breeze circulation over flat but differentially cooled surface; (c) R10SF: the circulation over the cooled surface in presence of the strong westerly background wind; (b) R10S00: the circulation over the surface with no additional cooling in presence of the strong westerly background wind.