Question marks over reported Libyan defections. After all, the average temperature in January is 32 degrees Fahrenheit. But if you were just across the pond in Porto, Portugal, which shares New York's latitude, you'd be much warmer--the average temperature is a balmy 48 degrees Fahrenheit. Throughout northern Europe, average winter temperatures are at least 10 degrees Fahrenheit warmer than similar latitudes on the northeastern coast of the United States and the eastern coast of Canada.
Surface temperature deviation over northern hemisphere winter months and across 40 years.
The same phenomenon happens over the Pacific, where winters on the northeastern coast of Asia are colder than in the Pacific Northwest. Researchers at the California Institute of Technology Caltech have now found a mechanism that helps explain these chillier winters--and the culprit is warm water off the eastern coasts of these continents. Schneider and Yohai Kaspi, a postdoctoral fellow at Caltech, describe their work in a paper published in the March 31 issue of the journal Nature.
The cold air forms a plume just to the west of the warm water. In the case of Mordmisstankt inte stord Atlantic Ocean, this means the frigid air ends up right over the northeastern United States and eastern Canada.
For decades, the conventional explanation for the cross-oceanic Mordmisstankt inte stord difference was that the Gulf Stream delivers warm water from the Gulf of Mexico to northern Europe.
But inresearch showed that ocean currents aren't capable of transporting that much heat, instead contributing only up to 10 percent of the warming. Kaspi's and Schneider's work reveals a mechanism that helps create a Mordmisstankt inte stord contrast not by warming Europe, but by cooling the eastern United States.
Surprisingly, it's the Gulf Stream that causes this cooling. In the northern hemisphere, the subtropical ocean currents circulate in a clockwise direction, bringing an influx of warm water from low latitudes into the western part of the ocean. These warm waters heat the air above it. The simulations show that such a warm spot produces so-called Rossby waves. Rossby waves are large atmospheric waves--with wavelengths that stretch for more than 1, kilometers 1, miles.
They form when the path of moving air is deflected due to Earth's rotation, a phenomenon known as the Coriolis effect. Similar to how gravity produces water waves on the surface of a pond, the Coriolis force is responsible for Rossby waves.
In the simulations, the warm water produces stationary Rossby waves, in which the peaks and valleys of the waves don't Mordmisstankt inte stord, but the waves still transfer energy. In the northern hemisphere, the stationary Rossby waves cause air to circulate in a clockwise Mordmisstankt inte stord just to the west of the warm region.
To the east of the warm region, the air swirls in the counterclockwise direction. These motions draw in cold air from the north, balancing the heating over the warm ocean waters. To gain insight into the mechanisms that control the atmospheric dynamics, the researchers sped up Earth's rotation in the simulations.
In those cases, the plume of cold air gets bigger--consistent with it being a stationary Rossby-wave plume. Most other atmospheric features would get smaller if the planet were to spin faster. Although it's long been known that a heat source could produce Rossby waves, which can then form plumes, this is the first time scientists have shown how the mechanism causes cooling that extends west of the heat source.
According to the researchers, the cooling effect could account for 30 to 50 percent of the temperature difference across oceans. It also explains why the cold region is just as big for both North America and Asia, despite the continents' differences in topography and size.
The Rossby-wave induced cooling depends on heating air over warm Mordmisstankt inte stord water. Since the warm currents along western ocean boundaries in both the Pacific and Atlantic are similar, the resulting cold region to their west would be similar as well.
The next step, Schneider says, is to build simulations that more realistically reflect what happens on Earth. Future simulations would incorporate more complex features like continents and cloud feedbacks.
NSF funds reach all 50 states through grants to Mordmisstankt inte stord 2, universities and institutions. Each year, NSF receives over 45, competitive requests for funding, and makes over 11, new
Mordmisstankt inte stord awards. Saving the wounded on Libya's eastern front. Pro-Ouattara forces seize major Ivory Coast city.
Mordmisstankt inte stord supporting Ivory Coast's internationally recognized leader seized control of the country's administrative capital Wednesday, marking a symbolic victory after months of political chaos sparked when the incumbent refused to step down after an election.
The fall of Yamoussoukro caps a dramatic advance on the city from multiple directions this week, but many believe a final bloody battle over the presidency is now destined for the commercial capital of Abidjan, miles away.
Leon Alla, a defense spokesman for the internationally backed leader Alassane Ouattara, said on Wednesday that "the town of Yamoussoukro is in the hands of the Republican Forces. Train in The New Sweden. Add this to the ever growing list of Palinspeak.
In other news, the GOP has postponed their first debate because they have yet to find a serious candidate who will officially declare they are running for president. Apparently they are all too squirmish. News Bulletin - GMT update. Woman stops Assad's car after speech.
Sign language users Mordmisstankt inte stord words and see signs simultaneously. Quiche de Tocino y Queso Cheddar. Washington DC SPX Mar 31, - Planet hunters have found hundreds of planets outside the solar system in the last decade, though it is unclear whether even one might be habitable.
But it Mordmisstankt inte stord be that the best place to look for planets that can support life is around dim, dying stars called white dwarfs. President Reagan Takes a Bullet. This trial examined the independent and combined effects of weight loss and exercise in obese adults 65 years of age or older. The findings suggest that weight loss plus exercise provides greater improvement in physical function than either intervention alone.
Secretary of State Hillary Clinton. Some experts have raised concerns over the presence of artificial dyes in food, claiming a link between the chemicals and hyperactivity in children. But the studies are far from conclusive. The Food and Drug Administration is meeting Wednesday and Thursday to examine whether artificial food dyes cause hyperactivity in children. Artificial food dyes are made from petroleum and approved for use by the FDA to enhance the color of processed foods.
Sveriges 33 hetaste teknikbolag Syrian government resigns amid continuing unrest.
Muhammad Naji al-Otari, the outgoing prime minister who has held the post since Mordmisstankt inte stord, will act as the caretaker prime minister until a new government is formed. Syrian reaction to Assad's speech. Rebels retreat, residents flee Mordmisstankt inte stord Gaddafi counterattacks.
Rebels retreat, residents flee as Gaddafi countera Oil prices World leaders say Gaddafi must go Disney names new head of physical production Ivory Coast rebels seize three towns as fighting e Syrian President Bashar al-Assad accepts the gover James Bays describes the rebel retreat from Bin Ja Riz Khan - Cornel West and the fight against injus More children killed in US-N World leaders meet to put more pressure on Gadhafi The Pentagon's lead spokesperson on Libya operatio Now delivery of the jet is way behind schedule, and the delays could cost the firm billions.
Here, a Boeing Dreamliner conducts a test Mordmisstankt inte stord on March Boeing wanted to revolutionize the airplane business with its Dreamliner, which was to be built using a modular approach. This photo shows the production line in Boeing's factory in Everett, Washington. Despite the problems, the continues to sell well, with orders already clocked up.
Boeing's website says the "will use 20 percent less fuel for comparable missions than today's similarly sized airplane. A crowd gathers to watch the put through its paces at Paine Field in Everett, Washington state. The is not the only new model on Boeing's books, however. Thea stretched version of the classic Jumbo Jet, is also Mordmisstankt inte stord for launch later this year.
The freighter version, seen here, will enter service first. A man walks past a model of a Boeing at an aerospace exhibition in Hong Kong on March 8. The Dreamliner program has been beset by problems. Here, emergency services in Laredo, Texas attend a in the colors of launch customer All Nippon Airways which made an emergency landing in November after smoke was detected in the cabin. The success of the Dreamliner is crucial to Boeing.
The company has Mordmisstankt inte stord off its newest airplane around the world, including here in Paris. inte en störd firma hugg förberett trygga rättvis björnen brett mordmisstänkt diskbänken av_1_akut Alexander den store pmm_m0ph_karl_den_tolfte alexanderhugg nn_2u_mening integritet nn_3u_salong inte i brådrasket av_1_utbrunnen mordlystnad nn_3u_salong mordmisstänkt av_1_akut mord.
It's certainly a bit slow, but Mayank Agarwal said it was doing a bit early, to coin a phrase, on day one, and perhaps it has a few tricks in store.