Analysis 02: OWF Effect on the Ocean - On the Effect of Offshore Wind Farms on the Atmosphere and Ocean Dynamics - page 70

a

b c d

e f g

Fig. 5.11 Overview of maximal OWF effect (OWFr-REFr) on the ocean after 1 day of simulation
along cross-section S-N in comparison with sensitivity runs regarding the vertical exchange. Y -
axis gives the change of the variables (a) surface elevation, (b) velocity component u ,(c) velocity
component v ,(d) velocity component w ,(e) temperature, (f) salinity, and (g) density. X -axis
comprises simulations of sensitivity study, src*: 50 denotes ; 60 is run without vertical

exchange of momentum, advection, and diffusion; 51 ignores vertical exchange of momentum in
simulation, 52 ignores vertical diffusion, and 54, vertical advection; 56 denotes a run ignoring vertical
diffusion, as well as vertical advection, but vertical exchange of momentum is treated as normal

normal run

' '

The vertical dimension is halved, and the effect magnitude of the hydrographical
variables is increased by an average of 45.82 %, compared to the normal run.
In a third step, the vertical TS advection is set to zero, src54 , which prevents the
exchange of heat with the vertical motion w . The effect on the hydrographic values
is minimal but is exalted in the upwelling regions, which means a decrease of
temperature and increase of salinity (Fig. 5.14 ).
Compared to the normal run, the effect is around 95.0 % smaller for the
hydrographic variables, which means nearly no change in TS is registered. So the