of Course, a few hours after the publication of the report alarmist of the Ipcc on climate change, the announcement is bad : a study by two Harvard researchers, published in the journal scientific american Joule, shows that wind farms will heat up the atmosphere. Stirring the air stream, the blades bring the masses warm to the soil, which prevents the air to cool, especially at night. The two scientists have turn to mathematical models, and the result is at first sight disturbing : if the electricity to the United States was performed by fields of turbines, they would increase the temperature of the country of 0.24 °C, and 0, 54 °C locally, where would be implanted of these turbines. Unfortunate, therefore, while the Ipcc report warns that we must at all costs limit the global rise in temperature to + 1.5 °C…

unlikely event

other reports, published over the last several years, put them also in evidence this action of the blades. However, it is to put into perspective the work published in the american journal. First, the researchers remind us that wind energy is one of the key solutions for limiting global warming, because it does not consume anything. In addition, their study is based on a model quite a few credible. They start with the assumption that the entirety of the United States would be covered with wind turbines, since all of their electrical energy would be produced by the wind. But this hypothesis will not be achieved ever before : no country, even a very windy, even large enough to house hundreds of thousands of poles, contemplates an electricity mix consisting of 100 % wind. In the scenarios for the future, the wind is always associated with the nuclear, solar, hydraulic, geothermal, biomass…

In France for Wind Energy, one of the major players in wind energy in France, it puts into perspective for these reasons the scope of this study, without compromising its scientific quality : “In France, in particular, the impact of the wind farm is equal to zero, since the country is too dense to implement parks for massive wind turbines. “If we imagine an energy mix including a share of wind power among other sources of energy, the effect of the turbines and pale would therefore be insignificant, or even ridiculous. One of the spokesperson of the association even wants to look on the bright side this study : “It is a theoretical work to be useful, as it shows that the scientific community focuses on the need to build more wind turbines to ensure the energy transition. “Another study had also imagined that, if we covered the Sahara of millions of wind turbines, the air would be stirred to the point of cause of the rains and greening the desert. An assumption of school, again ?