Popular Science — Wind turbines do, in fact, negatively affect the climate zone around them, here’s why.
Wind farms make it less windy and affect local temperatures ( Editor’s Note: Just another screwup by humans. What else is new? — DQ)
Daniel Engber — Popular Science — May 20, 2013
Wind turbines extract kinetic energy from the air around them, and since less energy makes for weaker winds, turbines do indeed make it less windy. Technically speaking, the climate zone right behind a turbine (or behind all the turbines on a wind farm) experiences what’s called a “wind speed vacuum,” or a “momentum deficit.” In other words, the air slows down.
The effect has implications for wind-farm efficiency. Upwind turbines in a densely packed farm may weaken the breeze before it reaches the downwind ones. It could even have a more general impact. If wind farms were constructed on a truly massive scale, their cumulative momentum deficit could conceivably alter wind speeds on a global scale (though how winds would change is complex—they’d likely slow in places and speed up in others). Continue reading, here…..