Britain Is in the Midst of a Rare ‘Wind Drought’

iStock
iStock

Generating renewable energy in Britain is a little less than a breeze these days: A “wind drought” is halting the country’s wind turbines.

This month’s wind energy output is down 40 percent from the same time last year, New Scientist reports. On average, about 15 percent of Britain’s electricity comes from wind power. Data starting from July 1 of this year put the monthly average closer to 6.9 percent. Last month, turbines were producing less than 2 percent of Britain’s electricity—the lowest output in two years.

That’s with even more wind turbines being installed over the course of the past year, New Scientist says. The data aren’t entirely surprising, though. The jet stream tends to make the UK’s weather drier and calmer during the summer and wetter and stormier during the winter. But the high pressure the jet stream has brought with it this year has been unusually prolonged, scientists say.

“It’s like a lid, it keeps everything still,” UK Met Office spokesperson Grahame Madge told New Scientist. “From the forecast looking out over the next couple of weeks, there doesn’t seem to be any significant change on the way.”

The wind drought shouldn’t cause too many problems in the short term. Electricity demand is low during the summer (very few British homes have air conditioning), and the country’s been able to compensate for the lack of wind by burning more natural gas. If the wind drought continues to persist, though, UK residents may begin to see an increase in utility fees. Natural gas prices have already risen with the increased demand.

“As we continue to transition to a low-carbon energy system, managing the intermittency of renewable power an important role in balancing supply and demand,” a National Grid spokesperson told New Scientist. “However, we have planned for these changes and [are] ready to play our part.”

The wind drought comes about eight years after British politicians vowed to reduce the UK's dependence on fossil fuels. Last year was the first year that electricity generated from low-carbon energy sources like solar power, wind power, and nuclear power outpaced high-carbon energy sources like coal and natural gas. This summer’s wind drought may make it difficult to improve on last year’s numbers.

[h/t New Scientist]

Amazing Timelapse Shows Florida Sky Turning Purple Following Hurricane Dorian

Scott Olson/Getty Images
Scott Olson/Getty Images

Photographs taken of Hurricane Dorian's massive eye and the damage it caused in the Bahamas paint a picture of what it was like to live through the historic storm. But some of the most stunning images to come out of the event were captured after the hurricane had passed. As KENS5 reports, the time-lapse video below shows the sky over Florida turning a unique shade of purple in the wake of Hurricane Dorian.

Dorian skimmed the east side of Florida earlier this week, causing power outages and some flooding. The worst of the storm was over by Wednesday night, but the ominous purple clouds it left behind may have sparked concern among some Florida residents.

A purple sky following a hurricane is the result of a perfectly natural occurrence called scattering. The sky was super-saturated after Dorian arrived, and the moisture in the atmosphere refracted the light of the setting sun. Normally, only the longest wavelengths of light on the color spectrum are visible through the clouds—that's why sunsets often appear gold, pink, and orange.

Violet is the shortest wavelength on the spectrum, which means it's almost never visible in the sky. But the air's high dew point Wednesday night, combined with the dense low-hanging clouds, created the perfect conditions for a rare purple sky.

Locals who've lived through a few hurricanes may have recognized the phenomenon; the same thing happened after Hurricane Michael hit Florida last year.

[h/t KENS5]

See What the Eye of Hurricane Dorian Looks Like From Space

NOAA, Getty Images
NOAA, Getty Images

Hurricane Dorian has already caused damage on the ground, leveling houses and killing at least five people in the Bahamas earlier this week. For people who haven't seen Dorian's power up close, these pictures captured from space put the magnitude of the storm into perspective.

As Live Science reports, the photographs below were taken by European Space Agency astronaut Luca Parmitano aboard the International Space Station. They show the hurricane swirling over the Atlantic, its massive eye in clear view.

The storm has grown even more intense since it was photographed from space. According to a tweet from Parmitano on September 1, the pictures show Dorian as a tropical storm. By the time the system reached the Bahamas on Monday, September 2, it had upgraded to Category 5 hurricane with winds exceeding 185 mph. Dorian has since weakened to a Category 3, but that's still strong enough to cause significant destruction if it makes landfall over the U.S.

After preparing for a direct hit all week, it looks as though the southern U.S. may be spared from the worst of the storm. Projections now show Dorian hugging the Atlantic coast, starting off the coast of Florida and skimming Georgia, South Carolina, and North Carolina. The hurricane is still likely to drive powerful winds and storm surges along the east coast, so local governments are urging residents to take any necessary precautions and be prepared to evacuate if the order is given.

[h/t Live Science]

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