Rains that are almost biblical, heat waves that don't end, tornadoes that strike in savage swarms—there's been a change in the weather lately. The biggest dust storm in living memory rolls into Phoenix on July 5, 2011, reducing visibility to zero. A flaming fence post marks the trail of a forest fire near Bastrop on September 5, 2011, during a record drought and heat wave. Frozen spray from Lake Geneva entombs cars, trees, and a promenade during a severe cold spell in February 2012.
Jamey Howell and Andrea Silvia had just heard that church was canceled when the flood submerged their Jeep near Nashville on May 2, 2010. Rainwater cascades onto a Chengdu resident rushing up a flight of stairs from an underground garage. The public swimming pool in Spur, a little town in West Texas, was originally closed because of leaks—but with the drought making water so scarce lately, there has been no rush to repair the pool and refill it. Tumbleweeds catch in the furrows of an unplanted cotton field near Brownfield, southwest of Lubbock. The wildfire near Bastrop, Texas, on September 5, 2011, was so hot it melted the aluminum wheels of this boat trailer. Since the drought started almost two years ago, Mark Meyers has taken in more than 800 donkeys at the Peaceful Valley Donkey Rescue, a shelter he and his wife, Amy, run near San Angelo, Texas.
National Geographic Extreme Earth Screensaver es un salvapantallas con una coleccion de fotografias de lugares a los que es dificil llegar o en los que la vida se desarrolla en una condiciones extremas.
Las imagenes son de paisajes de todo tipo: desiertos arenosos y helados, cuevas, fondos abisales, etc. Utilizamos nuestras propias cookies y de terceros para mejorar nuestros servicios y su experiencia. Enjoy galleries, puzzles, and desktop wallpapers featuring our readers’ best weather photos. Mayor Karl Dean was in the city’s Emergency Communications Center monitoring the first reports of flash flooding when something on a TV screen caught his eye. Over at NewsChannel 5, the local CBS station, meteorologist Charlie Neese could see where the weather was coming from. The Cumberland River, which winds through the heart of Nashville, started rising Saturday morning. By Saturday night the Cumberland had risen at least 15 feet, to 35 feet, and the corps was predicting it would crest at 42. But natural cycles can’t by themselves explain the recent streak of record-breaking disasters. By the end of the century the average world temperature could rise anywhere from three to eight degrees Fahrenheit—depending in part on how much carbon we emit between now and then. One of the biggest wild cards in our weather future is the Arctic Ocean, which has lost 40 percent of its summer sea ice since the 1980s. When it comes to individual storms, scientists are even less certain what effect global warming might have.
Less rain fell on Texas from October 2010 to September 2011 than in any other 12-month period since record keeping began in 1895.
The drought withered grazing lands too, forcing some ranches to ship their livestock to greener pastures up north. The last time the Four Sixes attempted such a thing, said general manager Joe Leathers, was more than a century ago, when the ranch moved herds to what was then the Indian Territory of Oklahoma. One of the costliest fires started last September just outside Bastrop State Park, southeast of Austin, where the loblolly pines were as dry and brittle as kindling.
When Paige and Ray Shelton returned to inspect their property adjacent to the state forest, they found their bungalow still standing, but the sawmill that Ray operated with his brother, Bo, was reduced to ashes and Paige’s pottery studio was burned to the ground. The rising cost and frequency of natural disasters can be blamed only partly on the weather. In Florida, where hurricanes, wildfires, and drought pose enormous risks to insurers, several national firms have stopped writing new policies altogether or pulled back in other ways. Meanwhile some governments have taken small but important steps to better prepare for extreme weather. Similarly, after a tropical storm killed as many as 500,000 people in Bangladesh in 1970, the government there developed an early warning system and built basic concrete shelters for evacuated families. We need to face that reality, Oppenheimer says, and do the things we know can save lives and money. National geographic is most popular platform of knowledge, national geographic provide us a lot of unknown facts, you can know about the different culture of the world, science technologies, nature beautiful, wide nature, history and other a lot of things, now national geographic has a lot of categories to spread information like national geographic channel, national geographic adventure, Nat geo music, Nat geo junior, Nat geo wild and much more, national geographic photographers doing their responsibility bravely, national geographic photographers have a great talent of photography, national geographic photographers cache the photos of wild animals, wild nature, national geographic photographer shot the photos from sea, all through they are very brave.
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The fire, which destroyed 1,685 houses, may have been sparked by dead pine trees falling onto power lines. An unusual dip in the polar jet stream, which looped as far south as Africa, brought Arctic air and deep snows to Europe, killing several hundred people. An unusually severe downpour on July 3, 2011, flooded streets and knocked out electricity in the city, which is the capital of Sichuan Province in central China. High winds and a record-breaking heat wave led to damaging erosion, says Buzz Cooper, who runs a cotton gin nearby. Softonic no aconseja el uso de National Geographic Extreme Earth si viola las leyes de tu pais.
Mediante ellas personalizamos anuncios, proporcionamos funciones de las redes sociales y analizamos nuestro trafico. But by the afternoon of Saturday, May 1, 2010, parts of the city had seen more than six inches, and the rain was still coming down in sheets. It was a live shot of cars and trucks on Interstate 24 being swamped by a tributary of the Cumberland River southeast of the city.
The jet stream had gotten stuck over the city, and one thunderstorm after another was sucking up warm, humid air from the Gulf of Mexico, rumbling hundreds of miles northeast, and dumping the water on Nashville. At Ingram Barge Company, David Edgin, a former towboat captain, had more than seven boats and 70 barges out on the waterway.
Pete Fisher, manager of the Grand Ole Opry, needed a canoe to get into the famous theater, which is on the riverfront northeast of the city. During the past decade we’ve also seen severe droughts in places like Texas, Australia, and Russia, as well as in East Africa, where tens of thousands have taken refuge in camps.
Are these extreme events signals of a dangerous, human-made shift in Earth’s climate? The tropical Pacific is especially influential, though, because it pumps so much heat and water vapor into the atmosphere. Something else is happening too: The Earth is steadily getting warmer, with significantly more moisture in the atmosphere. In theory extra water vapor in the atmosphere should pump heat into big storms such as hurricanes and typhoons, adding buoyancy that causes them to grow in size and power. A hotter, wetter atmosphere should promote more severe thunderstorms, but it might also reduce the wind shear needed for those storms to spawn twisters.
The 1,049 residents of Robert Lee, a West Texas town of ranchers, oil workers, retirees, and small business owners, spent much of 2011 watching their water supply dry up. In a kind of modern cattle drive, ranch hands from the Four Sixes Ranch near Guthrie and from its Dixon Creek operation in the Texas Panhandle drove more than 4,000 head of Angus crossbreeds onto double-decker trucks to transport them to leased lands from Nebraska to northern Montana. As Paige picked through the wreckage, Ray made a beeline for the chicken coop, hoping to spare his wife the sorrow of cleaning up all the burned carcasses. They’re afraid of another disaster like Hurricane Andrew in 1992, which cost the industry an estimated $25 billion.
An exceptional heat wave in Europe in 2003 took at least 35,000 lives; a later analysis found that climate change had doubled the odds of such a disaster. Here, I am sharing with you a collection of Jumping Photos that taken by national geographic photographers. Home to extreme landscapes and powerful creatures such as grizzlies and wolves, the park exhibits many animals and habitats that can't be seen anywhere else in the world. The 190-mile-an-hour twister that carved a sharp path across Tuscaloosa missed the University of Alabama football stadium (upper left) by a mile, then threaded between a large mall (X-shaped building at center) and the main hospital, which was soon treating victims.
A dedicated storm chaser, he shot this funnel on June 20, 2011, outside Bradshaw, where it derailed freight-train cars. Si quieres que aparezca en la ventana de "Propiedades de Pantalla" deberas copiar el archivo en la carpeta de Windows.
Tambien compartimos informacion sobre la manera en que usa nuestro sitio con nuestros socios de redes sociales, publicidad y analisis.
Floating past them in the slow lane was a 40-foot-long portable building from the Lighthouse Christian School. While Neese and his colleagues were broadcasting from a second-floor studio, the first-floor newsroom was being swamped by backed-up sewers. A month before Nashville, torrential downpours dumped 11 inches of rain on Rio de Janeiro in 24 hours, triggering mud slides that buried hundreds.

Deadly heat waves have hit Europe, and record numbers of tornadoes have ripped across the United States.
Scientists have learned a lot during the past few decades about how that strange seesaw in the equatorial Pacific affects weather worldwide. Decades of observations from the summit of Mauna Loa in Hawaii, as well as from thousands of other weather stations, satellites, ships, buoys, deep-ocean probes, and balloons, show that a long-term buildup of greenhouse gases in the atmosphere is trapping heat and warming up the land, oceans, and atmosphere.
During the past 25 years satellites have measured a 4 percent average rise in water vapor in the air column. Basic circulation patterns will move toward the Poles, just as some plants and animals are doing as they flee (or take advantage of) the expanding heat. New evidence suggests that warming is altering the polar jet stream, adding lazy north-south meanders to its path around the planet—which might help to explain why North America was so warm last winter and Europe so cold. Some models have predicted that global warming could increase the average strength of hurricanes and typhoons by 2 to 11 percent by 2100.
By last July the ranch had run out of tank water—drinking water in dirt ponds for cattle. Taken together, the fires blackened an area larger than Connecticut—nearly twice as much acreage as in the previous worst year. It consumed 1,685 houses but occasionally spared others nearby, leaving residents shaking their heads. In states like Texas, Arizona, and California the buildup of neighborhoods in former woodlands has exposed more properties to wildfires, just as coastal development in states like Florida, North Carolina, and Maryland has exposed expensive beach houses and hotels to hurricanes and other storms. Afterward French cities set up air-conditioned shelters and identified older people who would need transportation to the shelters. The smart approach to extreme weather is to attack all the risk factors, by designing crops that can survive drought, buildings that can resist floods and high winds, policies that discourage people from building in dangerous places—and of course, by cutting greenhouse gas emissions. The tornado killed 44, then roared northeast to the Birmingham area, where it killed 20 more. During the prolonged drought the reservoir has dropped by more than 99 percent, and towns that depend on it have had to scramble to find other water sources—drilling wells, building pipelines, or simply trucking in the water.
One crew in a skiff headed out to I-24 to pluck the driver of an 18-wheeler from the chest-high water. About three months after Nashville, record rains in Pakistan caused flooding that affected more than 20 million people.
Losses from such events helped push the cost of weather disasters in 2011 to an estimated $150 billion worldwide, a roughly 25 percent jump from the previous year. Although some places, notably the Arctic, are warming faster than others, the average surface temperature worldwide has risen nearly one degree Fahrenheit in the past four decades.
Meandering farther north than normal into Canada, the jet stream brought warm air with it; dipping far south over Europe, it delivered frigid winds and snow to that region. Given how little rain we had, we probably would have had record warmth in Texas in 2011 even without climate change. At the same time, the rapid growth of megacities in developing countries in Asia and Africa has made millions more vulnerable to heat waves and floods.
Whether this new system has the resources to survive a big storm isn’t clear yet, Nutter says. In late 2011 floods in Thailand submerged hundreds of factories near Bangkok, creating a worldwide shortage of computer hard drives.
Heat and water vapor coming off the warm pool generate thunderstorms so powerful and towering that their influence extends out of the tropics to the jet streams that blow across the middle latitudes. The subtropical dry zones are being pushed poleward, into regions such as the American Southwest, southern Australia, and southern Europe, making these regions increasingly susceptible to prolonged and intense droughts. And the same models that predict bigger hurricanes also say we could get fewer of them in the future. Instead of defending themselves against climate change, many communities appear to be leading with their chin. As the warm pool shifts back and forth along the Equator, the wavy paths of the jet streams shift north and south—which changes the tracks that storms follow across the continents.
But scientists don’t yet have the data or the theoretical understanding to say whether global warming was to blame.

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