Fig. 4
(a) Illustration of the modification of the critical wind speed (cws) by wind multipliers (1) (southwest wind). The map colours represent the topology over the study area: e.g. red spots denote small hills. We assume that the roughness multiplier rmSW is uniformly equal to 1.0 over this area (tmwsSW = cwsSW/tmSW). Labels 1 and 2 represent two forested points, label 3 the local meteorological station. (b) Spatial patterns of the topographic wind multiplier for the southwest direction. Note that the patterns seen are inline with the topographic contours seen in part (a)