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Latest Thermohaline circulation Stories

7c93e73a83794406f948f9c3cf4e74871
2011-01-15 10:50:59

The unusually cold weather this winter has been caused by a change in the winds. Instead of the typical westerly winds warmed by Atlantic surface ocean currents, cold northerly Arctic winds are influencing much of Europe. However, scientists have long suspected that far more severe and longer-lasting cold intervals have been caused by changes to the circulation of the warm Atlantic ocean currents themselves. Now new research led by Cardiff University, with scientists in the UK and US, reveals...

f7bbeeb249d3460c762b0bbee6253d811
2010-11-04 11:19:24

Global warming today could have similar effects on ocean currents and could accelerate climate change The Atlantic Ocean circulation (termed meridional overturning circulation, MOC) is an important component of the climate system. Warm currents, such as the Gulf Stream, transport energy from the tropics to the subpolar North Atlantic and influence regional weather and climate patterns. Once they arrive in the North the currents cool, their waters sink and with them they transfer carbon from...

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2010-07-09 07:30:00

North Pacific circulation radically changed by past post-glacial warming Toward the end of the last ice age, a major reorganization took place in the current system of the North Pacific with far-reaching implications for climate, according to a new study published in the July 9, 2010, issue of Science by an international team of scientists from Japan, Hawaii, and Belgium. Earth's climate is regulated largely by the world ocean's density-driven circulation, which brings warm surface water to...

432e1ad107b1d9246b3a70ee22a399301
2010-06-18 09:46:15

For decades, oceanographers have embraced the idea that Earth's ocean currents operate like a giant conveyor belt, overturning to continuously transport deep, cold polar waters toward the equator and warm equatorial surface waters back toward the poles along narrow boundary currents. The model held that the conveyor belt was driven by changes in the temperature and salinity of the surface waters at high latitudes. In a paper in the June 18 issue of Science, a Duke University oceanographer...

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2010-04-26 06:45:00

A deep-ocean current has been discovered near Antarctica by scientists, saying that it has the volume of 40 Amazon Rivers and will help researchers study the impacts of climate change on the world's oceans. The planet's climate relies heavily on the global ocean circulation pattern and the current discovered is a key part of that system. Evidence that the current exists had been detected previously by scientists, but there was no data on it. "We didn't know if it was a significant part of...

b490fa9db436c296ea45b3ff71c00b2c1
2010-03-26 06:20:52

New NASA measurements of the Atlantic Meridional Overturning Circulation, part of the global ocean conveyor belt that helps regulate climate around the North Atlantic, show no significant slowing over the past 15 years. The data suggest the circulation may have even sped up slightly in the recent past. The findings are the result of a new monitoring technique, developed by oceanographer Josh Willis of NASA's Jet Propulsion Laboratory in Pasadena, Calif., using measurements from...

b1dd2b64aecf4b6f382b3b1ab1faebc11
2010-01-11 07:40:00

In a vivid example of how a small geographic feature can have far-reaching impacts on climate, new research shows that water levels in the Bering Strait helped drive global climate patterns during ice age episodes dating back more than 100,000 years. The international study, led by scientists at the National Center for Atmospheric Research (NCAR), found that the repeated opening and closing of the narrow strait due to fluctuating sea levels affected currents that transported heat and salinity...

2009-05-18 12:40:17

U.S. scientists say they have discovered a new pathway for the global ocean circulation known as the Great Ocean Conveyor. Researchers from the Woods Hole Oceanographic Institution and Duke University said the conveyor belt paradigm says the Gulf Stream-warmed ocean releases heat to the atmosphere in the northern North Atlantic, leaving ocean water colder and denser as it moves north. The cold waters then sink and flow southward along the deep western boundary current that hugs the...

818e5992aa3e49ff2dc4718566d783171
2009-03-16 06:30:00

Scientists warn New York City could be at risk to damage from hurricanes and storm surges because they predict global warming could lift sea levels twice as fast as global rates. "The northeast coast of the United States is among the most vulnerable regions to future changes in sea level and ocean circulation, especially when considering its population density," said Jianjun Yin, a climate modeler at Florida State University. The new study predicts a slowdown in Atlantic Ocean currents that...

2009-03-11 11:07:59

Her PhD thesis "Surface and Deep Circulation off South Africa: Agulhas Leakage Influence on the Meridional Overturning Circulation During the Last 345 kyr" presented data on a major ocean current in the southern hemisphere, the Agulhas Current, which transports warm waters from the tropical Indian Ocean to the southern tip of Africa. These new data profiles are not yet fully exploited and need to be implemented in global ocean models. But they do provide for the first time robust evidence in...


Word of the Day
cock-a-hoop
  • Exultant; jubilant; triumphant; on the high horse.
  • Tipsy; slightly intoxicated.
This word may come from the phrase 'to set cock on hoop,' or 'to drink festively.' Its origin otherwise is unclear. A theory, according to the Word Detective, is that it's a 'transliteration of the French phrase 'coq a huppe,' meaning a rooster displaying its crest ('huppe') in a pose of proud defiance.' Therefore, 'cock-a-hoop' would 'liken a drunken man to a boastful and aggressive rooster.'
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