A Case Study of Offshore Advection of Boundary Layer Rolls over a Stably Stratified Sea Surface

Figure 9

(a, b, d, e, g, h) show the cross-wind variance of (a, d, g) vertical wind speed and (b, e, h) horizontal wind speed. (c, f, i) show the horizontal wind field at approximately 100 m height in the area over which the variance is calculated. The figures are from times (a, b, c) 1400 UTC, (d, e, f) 1600 UTC and (g, h, i) 1800 UTC. The dashed lines in (a, b, d, e, g, h) show the approximate inversion height below and above 400 m height. The grey area below the plots shows the average ratio of land at each latitude.