As shown in Fig. 1 & 2, the center of cold are the North-Sea and the Baltic Sea. For Europe they functioning like a storage-heater. During summer they take heat in, during winter they release heat. The latter is particular important to keep the west-drift working. This means, moisture warm air moves from the Atlantic east-wards toward the Ural Mountains, until it is stopped by continental cold and dry air.
Well, great subject, indeed.
I know that the off-shore windfarms are not 100% ok, though many people refer to them as green energy. More than that, I read a report about windfarms in generally and about the fact that many birds die because of them. It’s really, really sad.