Root Force: Why Wind Power is a Sham

By Root Force

 

A series of recently released studies make it clear that wind power is not going to save us—not from global warming, not from high extinction rates, and not from the system of high-energy-consumption industrial exploitation that is killing the planet.

Let’s start with the most damning findings: even the most large-scale shift to wind power cannot slow greenhouse gas emissions enough to have any positive effect on the climate, although it may manage to make things worse. Why?

A study published in Nature Climate Change in September found that although hypothetically there is enough power in the earth’s winds to sustain current levels of energy consumption, in practice you could never harvest enough energy from wind to affect the climate:

Turbines create drag, or resistance, which removes momentum from the winds and tends to slow them. As the number of wind turbines increases, the amount of energy that is generated increases. But at some point, the winds would be slowed so much that adding more turbines will not generate more electricity. …

[T]he study found that the climate effects of extracting wind energy at the level of current global demand would be small, as long as the turbines were spread out and not clustered in just a few regions. At the level of global energy demand, wind turbines might affect surface temperatures by about 0.2 degrees Fahrenheit and affect precipitation by about 1 percent. Overall, the environmental impacts would not be substantial. (emphasis added)

Another study, published in Nature last month, found that wind farms being constructed in Scotland actually lead to a net increase in carbon dioxide emissions:

Wind farms are typically built on upland sites, where peat soil is common. In Scotland alone, two thirds of all planned onshore wind development is on peatland. England and Wales also have large numbers of current or proposed peatland wind farms.

But peat is also a massive store of carbon, described as Europe’s equivalent of the tropical rainforest. Peat bogs contain and absorb carbon in the same way as trees and plants — but in much higher quantities.

British peatland stores at least 3.2 billion tons of carbon, making it by far the country’s most important carbon sink and among the most important in the world.

Wind farms, and the miles of new roads and tracks needed to service them, damage or destroy the peat and cause significant loss of carbon to the atmosphere, where it contributes to climate change. …

Richard Lindsay of the University of East London, said … “The world’s peatlands have four times the amount of carbon than all the world’s rainforests. But they are a Cinderella habitat, completely invisible to decision- makers.”

Finally, a study published last month in the journal Environmental Research Letters conducted a further analysis on the effects of wind turbine drag:

Each wind turbine creates behind it a “wind shadow” in which the air has been slowed down by drag on the turbine’s blades. The ideal wind farm strikes a balance, packing as many turbines onto the land as possible, while also spacing them enough to reduce the impact of these wind shadows. But as wind farms grow larger, they start to interact, and the regional-scale wind patterns matter more.

Keith’s research has shown that the generating capacity of very large wind power installations (larger than 100 square kilometers) may peak at between 0.5 and 1 watts per square meter. Previous estimates, which ignored the turbines’ slowing effect on the wind, had put that figure at between 2 and 7 watts per square meter.

In short, we may not have access to as much wind power as scientists thought.

“If wind power’s going to make a contribution to global energy requirements that’s serious, 10 or 20 percent or more, then it really has to contribute on the scale of terawatts in the next half-century or less,” says Keith.

If we were to cover the entire Earth with wind farms, he notes, “the system could potentially generate enormous amounts of power, well in excess of 100 terawatts, but at that point my guess, based on our climate modeling, is that the effect of that on global winds, and therefore on climate, would be severe — perhaps bigger than the impact of doubling CO2.” (emphasis added)

As if that weren’t enough, another study has just concluded that large wind turbines constructed offshore may snap like matches when hit by medium-size waves:

“If we do not take ringing into consideration, offshore wind turbine parks can lead to financial ruin,” warns John Grue to the research magazine Apollon at University of Oslo. …

Ringing does not just harm wind turbines. Ringing has already been a great problem for the oil industry. The designers of the YME platform did not take ringing into account, and lost NOK 12 billion.

“It is possible to build your way out of the ringing problem by strengthening the oil rigs. However, it is not financially profitable to do the same with wind turbines,” says John Grue.

And finally, let’s not forget what environmentalists have been warning about for decades: wind turbines murder birds.

ReWire has learned that the North Sky River Wind project, which attracted fierce opposition from environmental groups concerned about potential threat to eagles and California condors, was the site of a golden eagle death in January. …

The eagle kill apparently occurred on January 29, just a month after North Sky River started generating power.

So what’s the solution? Certainly not wind, solar, or any other industrial magic bullet. The solution is to dramatically scale back consumption and shift to local-based economies not dependent upon stealing resources from distant people and lands.

The solution is to demolish the global economic system.

Get started!

Study: UK wind farms devastate peatlands, produce high carbon emissions

By Andrew Gilligan / The Telegraph

Thousands of Britain’s wind turbines will create more greenhouse gases than they save, according to potentially devastating scientific research to be published later this year.

The finding, which threatens the entire rationale of the onshore wind farm industry, will be made by Scottish government-funded researchers who devised the standard method used by developers to calculate “carbon payback time” for wind farms on peat soils.

Wind farms are typically built on upland sites, where peat soil is common. In Scotland alone, two thirds of all planned onshore wind development is on peatland. England and Wales also have large numbers of current or proposed peatland wind farms.

But peat is also a massive store of carbon, described as Europe’s equivalent of the tropical rainforest. Peat bogs contain and absorb carbon in the same way as trees and plants — but in much higher quantities.

British peatland stores at least 3.2 billion tons of carbon, making it by far the country’s most important carbon sink and among the most important in the world.

Wind farms, and the miles of new roads and tracks needed to service them, damage or destroy the peat and cause significant loss of carbon to the atmosphere, where it contributes to climate change.

Writing in the scientific journal Nature, the scientists, Dr Jo Smith, Dr Dali Nayak and Prof Pete Smith, of Aberdeen University, say: “We contend that wind farms on peatlands will probably not reduce emissions …we suggest that the construction of wind farms on non-degraded peats should always be avoided.”

Dr Nayak told The Telegraph: “Our full paper is not yet published, but we should definitely be worried about this. If the peatland is already degraded, there is no problem. But if it is in good condition, we should avoid it.”

Another peat scientist, Richard Lindsay of the University of East London, said: “If we are concerned about CO2, we shouldn’t be worrying first about the rainforests, we should be worrying about peatlands.

“The world’s peatlands have four times the amount of carbon than all the world’s rainforests. But they are a Cinderella habitat, completely invisible to decision- makers.”

One typical large peat site just approved in southern Scotland, the Kilgallioch wind farm, includes 43 miles of roads and tracks. Peat only retains its carbon if it is moist, but the roads and tracks block the passage of the water.

The wind industry insists that it increasingly builds “floating roads,” where rock is piled on a textile surface without disturbing the peat underneath.

But Mr Lindsay said: “Peat has less solids in it than milk. The roads inevitably sink, that then causes huge areas of peatland to dry out and the carbon is released.”

Mr Lindsay said that more than half of all British onshore wind development, current and planned, is on peat soils.

In 2011 the Scottish government’s nature protection body, Scottish Natural Heritage, said 67 per cent of planned onshore wind development in Scotland would be on peatland.

Read more from The Telegraph: http://www.telegraph.co.uk/earth/energy/windpower/9889882/Wind-farms-will-create-more-carbon-dioxide-say-scientists.html

Indigenous people in Mexico organizing resistance against corporate wind farms

Indigenous people in Mexico organizing resistance against corporate wind farms

By Jennifer M. Smith / Upside-Down World

More than five centuries after Colombus’ arrival in the Americas, the invasion of European powers continues to threaten traditional ways of life in indigenous communities in Mexico.  The conflict against the corporate takeover of the ancestral lands of the Huave, or Ikoots people, in the Isthmus of Tehuantepec in Oaxaca is just one of the struggles continuously being played out in the face of trans-national development policies such as Plan Puebla Panama (now known as Proyecto Mesoamerica).

The Ikoots people of Oaxaca have inhabited the Isthmus of Tehuantepec for more than 3000 years, pre-dating the better-known Zapotec culture in Oaxaca.  They are a fishing society that depends on the ocean for their livelihood; the Ikoots peoples’ history is so integrated with the sea that they are also known as Mareños (“Oceaners”). Now Ikoots communities are struggling to defend their ancestral lands from multinational corporations who want to build wind turbines in the water along the coast, in the very ocean that has supported their way of life for centuries.

In April of 2004, the United States Department of Energy (DOE) and the US Agency for International Development (USAID) sponsored a study to accelerate the development of wind projects in the state of Oaxaca, which found that the best area for wind project development was in the Isthmus of Tehuantepec, in the heart of the ancestral Ikoots territory. [1]

The proposed Parque Eolico San Dionisio (San Dionisio Wind Park), a wind farm to be constructed in the ocean along the coast, would consist of 102 wind turbines in the water outside the town of San Dionisio del Mar (and 30 more outside neighboring Santa Maria del Mar), two electric transformer substations, six access paths and additional support structures. [2] It would take up 27 kilometers of coastline.  The multinationals implementing the project have also informed the Mexican government that they will need to install 5 mooring docks in the Laguna Superior, a coastal lagoon that local communities heavily depend on for fishing. [3]

The construction of wind turbines would have a devastating effect on both Ikoots society and the environment.  The community fears that the vibration from the machines would destroy the aquatic life in the area, which is the economic basis of survival for Ikoots communities such as San Dionisio del Mar, San Mateo del Mar and San Francisco del Mar.

“This is the life of the poor: we fish so we can eat and have something to sell, to have a bit of money.  They say that now that the wind project is here, they’ll give us money for our land and sea, but the money won’t last forever.  We don’t agree with this. How are we going to live?” says Laura Celaya Altamirano, a resident of Isla Pueblo Viejo and the wife of a fisherman. [4] The wind turbines also present a threat to migratory birds and would damage the ecosystems of the local mangrove swamps.  In addition, the proposed construction would desecrate Ikoots sacred territory, namely the Isla de San Dionisio and the Barra de Santa Teresa (known by the Ikoots communities as Tileme).

The proposed location for the aquatic wind farm is San Dionisio del Mar, a town of about 5000 residents.  The project in San Dionisio is being implemented by a consortium called Mareña Renovable, which consists of the global investment bank Macquarie, based in Australia; the Dutch investment group PGGM; and the Mitsubishi Corporation of Japan.  It includes turbines constructed by the Danish Company Vestas Wind Systems, and the involvement of two wind power companies:  Grupo Preneal of Spain, and DEMEX of Mexico.  The project also has funding from the Inter-American Development Bank. [5] The electricity from the farm would be used to power such corporate giants as FEMSA (based in Mexico, the largest beverage company in Latin America), Coca-Cola, Heineken, and other multinational corporations. [6]

A total disregard for the environment and the livelihoods of local people is par for the course when multinationals step in to take over communal lands for profit.  In the Isthmus of Tehuantepec, wind power companies have been exploiting local communities for years, pressuring farmers (most with little formal education) to sign contracts they often don’t understand in order to give up their rights to land that has been held communally for generations. “Oaxaca is the center of communal landownership. There is probably no worse place to make a land deal in Mexico,” says Ben Cokelet, founder of the Project on Organizing, Development, Education, and Research.[7]

Developers held meetings with locals in which model windmills the size of dinner platters were shown; they were led to believe they could continue farming around them. Later they were shocked to see 15-to-20-story turbines constructed, taking up acres of their land.  Developers pay the farmers a pittance in exchange for their land, often paying only 1/5th of what they would pay for similar land in the US, or 1/7thof what they would pay the Mexican government for the same land.

And, in a move that exacerbates tension in the community, local leaders are given better deals for their land in order to make the process more appealing to the rest of the population: “The first guy or two that bites gets [$8] per square meter. That’s a hundred times better contract than the other people,” says Cokelet. “But the 98 percent of farmers who sign afterwards sign on for rock-bottom prices. Those one or two people who bite – they don’t bite because they’re lucky. They bite because they know someone. And their job … is to sell it to all their neighbors.” [8]

There are currently 14 wind farms built on land in the Isthmus of Tehuantepec, with 4 under construction in 2012 and 3 more scheduled for 2013. [9]  According to the Declaración de San Dionisio del Mar, released on September 17 by the indigenous rights organization UCIZONI (La Unión de Comunidades de la Zona Norte del Istmo – The Union of Communities in the North Zone of the Isthmus), the communities affected by the 14 existing wind farms have not benefited from lower electricity rates; rather, the intention of the farms is clearly to serve the interests of transnational corporations such as Coca-Cola, Walmart, Nestle, Bimbo and others. [10]

The wind turbines in San Dionisio are the first proposed turbines to be built in the sea.  Ikoots communities would not even benefit from the jobs created by the wind turbines; the construction and maintenance of the wind turbines would most certainly be given to employees of the multinational corporations funding the project, not to local fishermen.

The Ikoots community of San Dionisio del Mar did not consent to this project, nor were they even informed that it was under consideration.  The International Labour Organization, a United Nations agency dealing with labor rights, specifically states in its Convention 169 (Convention on Indigenous and Tribal Peoples) that “special measures… be adopted to safeguard the persons, institutions, property, labour, cultures and environment of these [indigenous] peoples. In addition, the Convention stipulates that these special measures should not go against the free wishes of indigenous peoples.” Mexico ratified this convention in 1990. [11] In this case, there was no public forum or announcement regarding the construction of the wind farms.

“A common practice of foreign businesses is to ‘buy’ [via bribes] the local PRIista authorities,” says Carlos Beas Torres, a leader and co-founder of UCIZONI and a well-known activist for indigenous rights. In 2004, Alvaro Sosa, the then-president of the “comisariado de bienes comunales” (essentially, the commissary for the territory held in common by the community), signed a preliminary contract renting a section of land to the Spanish corporation Preneal without the knowledge of the town’s residents. The 30-year contract that gave the multinationals access to 1643 hectares of land; Sosa did not inform the community of this action and accepted bribes in exchange for his consent.[12]

The people of San Dionisio del Mar did not find out about the existence of this contract until late in 2011, when the municipal president, Miguel López Castellanos (a member of the Partido Revolucionario Institucional, or PRI), again without consulting the community gave his permission for the consortium Mareña Renovables to begin construction of wind turbines in exchange for a payment of between 14-20 million pesos (between $1-1.5 million USD). The multinationals claim to have given him 20 million pesos, but Lopez Castellanos only admits to receiving 14 million pesos. [13]

Upon this discovery, the residents of San Dionisio held a public assembly where they demanded that the municipal president revoke his consent for the wind farm, which he refused to do. In February, representatives from the community met with DEMEX in Mexico City to request that the contract process start over, but were turned down. [14] Thus the struggle for control of the Ikoots’ ancestral land began.

Not surprisingly, an intense resistance movement against the wind farm has surged in San Dionisio del Mar.  The townspeople have initiated a legal battle in the Tribunal Unitario Agrario (Agrarian Unitary Tribunal), the government agency in charge of settling agrarian disputes, in an attempt to nullify the contract.  However they are also taking direct action in an attempt to defend their land.

In late January 2012, community members took possession of the municipal palace in San Dionisio in protest, ejecting municipal president Miguel López Castellanos, creating the Asamblea General del Pueblo de San Dionisio (General Assembly of the People of San Dionisio), and declaring themselves in resistance.[15]  In April, the San Dionisio communal assembly prevented employees of the multinationals from laying out access roads in the Barra de Santa Teresa, and set up a permanent watch to make sure the contractors do not return. [16]

In September, community members organized a national encuentro (or gathering) in San Dionisio, with the participation of around 300 people from 25 different indigenous and activist organizations from 6 different states in Mexico.[17]  The intent of the encuentro was not only to raise awareness on what was happening on Ikoots land, but also to create a large-scale national plan of action to resist megaprojects such as the wind farms. “It’s practically a second Spanish Conquest; they’re coming again to snatch our land with a contract that is completely advantageous, draconian and in violation of our rights as indigenous people,” says Jesús García Sosa, a representative of the Asamblea General. [18]

The resistance movement continues to grow despite threats and intimidation, as well as actual physical attacks on community members committed by opposing political factions. The general consensus is that these factions are being paid by the multinationals involved to hamper resistance to the development project. On August 25, a representative of the Asamblea General named Moisés Juárez Muriel was brutally attacked while walking home in the evening by two men who beat him with stones.

He was taken by two compañeros in resistance to the IMSS-Complamar clinic, where he was refused treatment because the clinic was under control of the municipal president. [19] In mid-September, immediately after the conclusion of the encuentro in support of the Ikoots community members in resistance, a group of heavily armed individuals surrounded the municipal palace that the community members were occupying, pointing guns at and intimidating the people who were guarding the building. [20]

Resistance movement leaders have also received public death threats from political parties and anonymous sources. On October 6, a group of PRI agitators marched through San Dionisio, making specific death threats against Bettina Cruz Velazquez, a well-known human rights activist and founder of the Asamblea de los Pueblos Indígenas del Istmo de Tehuantepec en Defensa de la Tierra y el Territorio (Assembly of Indigenous Peoples of the Isthmus of Tehuantepec in Defense of Land and Territory).

Cruz Velazquez is deeply involved in the resistance movement against the wind project. Human rights groups in Mexico have formally asked the governor of Oaxaca, Gabino Cué Monteagudo, to guarantee her safety.  [21] Carlos Beas Torres of UCIZONI has received threatening phone calls for his public stance in opposition of the project. [22]

In some cases, attempts to stop resistance support have led to clashes. In mid-October, two organizations, El Frente por la Defensa de la Tierra (The Front for the Defense of the Earth) and UCIZONI sent a caravan of support attempting to bring food and supplies to the community in resistance in San Dionisio. A blockade was set up by armed PRIista sympathizers of the municipal president, Miguel López Castellanos, to keep the caravan from passing. [23] A violent confrontation ensued.

“The store owners in San Dionisio belong to the PRI and refuse to sell food to the people resisting the wind project,” says Carlos Alberto Ocaña, whose father (a native of San Dionisio) was the driver of the first truck in the supply caravan. “When the caravan approached the town, it was stopped by a blockade of about 70 people. They had guns, machetes, and gasoline for setting the cars on fire.  My father was in the first truck with five other people. They PRIistas in the blockade pulled them out of the truck and started beating them.”

The police eventually arrived, but the caravan was unable to pass the barricade to reach San Dionisio and eventually it was forced to turn back without delivering the supplies.

On October 17 and 18, members of the Asamblea General of San Dionisio, UCIZONI, la Asamblea de Pueblos Indígenas del Istmo en Defensa de la Tierra y el Territorio, la Alianza Mexicana por la Autodeterminación de los Pueblos (Mexican Allaince for the Self-Determination of the People, AMAP), and a half dozen other groups held protests in Mexico City. They held rallies in front of the Interamerican Development Bank, Mitsubishi, Coca-Cola, Vestas, and the Danish embassy. Their goal was twofold: to impede the construction of the wind park in San Dionisio, but also to publicly denounce the environmental and cultural damage that threatens the Ikoots communities of the Isthmus.

They were received and allowed to present written complaints at the Interamerican Development Bank, Vestas, and the Danish embassy.  oca-Cola-FEMSA refused to meet with them. [24] As of this writing, the Ikoots communities’ struggle against corporate takeover continues; in November representatives of the community will travel to the Netherlands, with the support of Dutch unions, to present a letter of protest in person to the Dutch investment company PGGM.

In the words of Asamblea General representative Jesús García Sosa, “We will not allow that business and government to yet again displace us from our territory, which symbolizes our very life, our mother, our father; we can’t sell it to them or put a price on it, much less in exchange for projects of death and plunder.” [25]

On October 30th, President Felipe Calderon Hinojosa, who was in Oaxaca to inaugurate a new highway, also travelled to inaugurate the Piedra Larga Wind Park. Calderon saluted the project, citing it as a solution to poverty and climate change, and mentioning the “additional income” the residents of the town Unión Hidalgo would receive for allowing the turbines to be installed on their communal land.

Meanwhile, 300 meters outside the park, theirn entrance blocked by national police, nearly 200 people from different communities in the region including San Mateo del Mar, San Dionisio del Mar, San Francisco del Mar, Unión Hidalgo, Juchitán, Santa María Xadani and the UCIZONI, protested the park’s opening. [26]

1. Noticias de Oaxaca, Oct. 14 2012.

2. Noticias de Oaxaca, Aug. 20 2012.

3. Noticias de Oaxaca, Apr. 21 2012.

4. Noticias de Oaxaca, Aug. 20 2012.

5. Recharge News, Mar. 12 2012.

6. Noticias de Oaxaca, Apr. 23 2012.

7. Christian Science Monitor, Jan. 26 2012.

8. Ibid

9. Noticias de Oaxaca, Oct. 11 2012.

10. UCIZONI statement, Sept. 17 2012.

11. International Labor Organization Convention 169.

12. La Jornada, Aug. 23 2012.

13. Noticias de Oaxaca, Aug. 20 2012.

14. Christian Science Monitor, Feb. 28 2012.

15. El Sol del Istmo, Jan. 30 2012.

16. Noticias de Oaxaca, Apr. 21 2012.

17. Despertar de Oaxaca, Sept. 28 2012.

18. Noticias de Oaxaca, Aug. 20 2012.

19. Quadratin Oaxaca, Oct. 9 2012.

20. Ibid.

21. E-Oaxaca, Oct. 15 2012.

22. Quadratin Oaxaca, Oct. 9 2012

23. E-Oaxaca, Oct. 11 2012. (Link at e-oaxaca.mx/noticias/nacional/13411-impide-edil-de-san-dionisio-del-mar-ingreso-de-caravana-contra-empresas-eolicas.html no longer works)

24. La Jornada, Oct. 17 2012:

25. Noticias de Oaxaca, Aug. 20 2012.

26. Eco Noticias Huatulco. Oct 30, 2012.

From Upside Down World: http://upsidedownworld.org/main/mexico-archives-79/3952-indigenous-communities-in-mexico-fight-corporate-wind-farms

Judge throws out Quechan injunction against wind farm project threatening ancestral sites

By Ahni / Intercontinental Cry

A Federal judge has thrown out the Quechan Nation’s request for an injunction against the controversial Ocotillo Express Wind Project in western Imperial County, California.

The Quechan filed for the injunction on May 14, just three days after the Bureau of Land Management, an agency of the U.S. Department of the Interior, gave “fast-track” approval for the project. The Quechan complaint stated that the Department of Interior, in approving the project, “violated… federal laws, regulations, and policies including the Federal Land Policy and Management Act (FLPMA); National Historic Preservation Act (NHPA); National Environmental Policy Act (NEPA); Administrative Procedures Act (APA); and the CDCA [The California Desert Conservation Area] Plan.”

The complaint went on to explain that the massive 10,150-acre project area contains 287 archaeological sites including geoglyphs, petroglyphs, sleeping circles and other sites of spiritual significance; thousands of artifacts, and at least 12 burial (an exhaustive survey has not been carried out).

Construction of the 112-turbine project would utterly devastate these sites.

Furthermore, the project jeopardizes the delicate desert ecosystem which is “home to the Federally endangered Peninsular bighorn sheep and the flat-tailed horned lizard, a perennial candidate for listing under the Endangered Species Act,” says Chris Clarke, Director of Desert Biodiversity. “The turbines on the site would stand 450 feet tall with blades more than 180 feet long. With blades of that length, if the turbines spin at a leisurely 10 rpm the speed of the blade tips will approach 140 miles per hour, a serious threat to the region’s migratory birds — including the protected golden eagle,” he continues.

A day after filing for an injunction, on May 15, Quechan Tribal Council President Kenny Escalanti issued this statement outside the offices of Pattern Energy, the company behind the project.

He also spoke at a press conference alongside environmentalists and area residents in which he calls on President Obama to meet with tribal leaders and halt the destruction of sacred sites.

Robert Scheid, Viejas Band of the Kumeyaay Nation, spoke at the same press conference, calling on people across America to seek a national moratorium on industrial-scale energy projects on public lands. “Viejas leaders have asked to meet with President Barack Obama and Interior Secretary Ken Salazar”, reports East County Magazine “to share concerns over violations of laws that are supposed to protect tribal cultural resources; but have received no response”.

With the denial of the Quechan petition, Pattern Energy can now proceed with their construction plans without restraint. And they aren’t wasting any time. A new website documenting the daily destruction of the Ocotillo desert has just been launched: www.SaveOcotillo.picturepush.com.

If the construction is completed, the wind turbines will spin for no more than 30 years.

From Intercontinental Cry: http://intercontinentalcry.org/judge-denies-quechan-injunction-controversial-wind-project/

Wind Farms Cause Localized Temperature To Rise

Wind Farms Cause Localized Temperature To Rise

By Louise Gray / The Telegraph

Usually at night the air closer to the ground becomes colder when the sun goes down and the earth cools.

But on huge wind farms the motion of the turbines mixes the air higher in the atmosphere that is warmer, pushing up the overall temperature.

Satellite data over a large area in Texas, that is now covered by four of the world’s largest wind farms, found that over a decade the local temperature went up by almost 1C as more turbines are built.

This could have long term effects on wildlife living in the immediate areas of larger wind farms.

It could also affect regional weather patterns as warmer areas affect the formation of cloud and even wind speeds.

It is reported China is now erecting 36 wind turbines every day and Texas is the largest producer of wind power in the US.

Liming Zhou, Research Associate Professor at the Department of Atmospheric and Environmental Sciences at the University of New York, who led the study, said further research is needed into the affect of the new technology on the wider environment.

“Wind energy is among the world’s fastest growing sources of energy. The US wind industry has experienced a remarkably rapid expansion of capacity in recent years,” he said. “While converting wind’s kinetic energy into electricity, wind turbines modify surface-atmosphere exchanges and transfer of energy, momentum, mass and moisture within the atmosphere. These changes, if spatially large enough, might have noticeable impacts on local to regional weather and climate.”

The study, published in Nature, found a “significant warming trend” of up to 0.72C (1.37F) per decade, particularly at night-time, over wind farms relative to near-by non-wind-farm regions.

The team studied satellite data showing land surface temperature in west-central Texas.

“The spatial pattern of the warming resembles the geographic distribution of wind turbines and the year-to-year land surface temperature over wind farms shows a persistent upward trend from 2003 to 2011, consistent with the increasing number of operational wind turbines with time,” said Prof Zhou.

However Prof Zhou pointed out the most extreme changes were just at night and the overall changes may be smaller.

Also, it is much smaller than the estimated change caused by other factors such as man made global warming.

“Overall, the warming effect reported in this study is local and is small compared to the strong background year-to-year land surface temperature changes,” he added.

The study read: “Despite debates regarding the possible impacts of wind farms on regional to global scale weather and climate, modelling studies agree that they can significantly affect local scale meteorology.”

Professor Steven Sherwood, co-Director of the Climate Change Research Centre at the University of New South Wales, said the research was ‘pretty solid’.

“This makes sense, since at night the ground becomes much cooler than the air just a few hundred meters above the surface, and the wind farms generate gentle turbulence near the ground that causes these to mix together, thus the ground doesn’t get quite as cool. This same strategy is commonly used by fruit growers (who fly helicopters over the orchards rather than windmills) to combat early morning frosts.”

From The Telegraph: http://www.telegraph.co.uk/earth/earthnews/9234715/Wind-farms-can-cause-climate-change-finds-new-study.html

Photo by Thomas Richter on Unsplash