Analysis 02: OWF Effect on the Ocean - On the Effect of Offshore Wind Farms on the Atmosphere and Ocean Dynamics - page 65

10 3 10 3 m. Here, the comparison of the which shows +5.86 and 9.16

extreme values of ζ results in an about 35 % weaker ζ effect in the case of BTM,

but in relation to the mean ζ effect, the BTM simulation is 4.54 % weaker than the

master simulation.
The weaker effect on surface elevation can be explained using the vertical
velocity component . The existence of the OWF effect on the vertical velocity
component indicates that the vertical motion occurs as a cause of

ζ

dipole forma-
tion. The wind wake causes a wake in ocean flow, which provokes congestion of
mass, and the downwelling is a compensating reaction.
The impact on vertical velocity component w by BTM has a maximum of
1.0 10 5 m/s in 3.0-m depth,

Fig. 5.10 . While here the minimum, downwelling, is nearly equal to the master

10 5 m/s and a minimum speed of 1.2

Fig. 5.10 12-turbine OWF effect (OWFr-REFr) on the vertical velocity component w for (a1)-
(a3) master run, means barotropic mode (Master), for (b1)-(b3) run under barotropic conditions
(BTM) and (c1)-(c3) the difference between Master and BTM. Results are presented in the
horizontal at 12-m depths (a1-c1) and along the cross-sections W-E (a2-c2) and S-N (a3-c3)
through the OWF. The OWF is placed around x 0. BTM results in a smoother and intensified

vertical velocity, especially in deeper depths and even in 12-m depths. In the case of Master,
maximal changes are concentrated around the 12-m layer

¼ y ¼