Navigation Links
Fluctuations in Ocean Salinity Could Forewarn of Climate Change

Significant increase or decrease in ocean salinity could forewarn of climate change in 10 to 20 years time, researchers say.

The results, presented at a recent European Science Foundation (ESF) conference states that a build up of salty water stimulates deep-water circulation, while a diluting of the waters results in sluggish flow.

Salt plays a far more important role that we first thought, said Prof. Rainer Zahn, a palaeoclimatologist at the Autonomous University of Barcelona in Spain.

Salt increases the density of water. Once a pocket of water becomes salty enough, it sinks, drawing in additional water from surrounding areas, and initiating an ocean circulation loop called thermohaline overturning.

Using a combination of modern observations, numerical models and palaeoclimate data, scientists have now discovered that a build up of salt in the waters off the coast of South Africa could help speed up ocean circulation in the North Atlantic, despite the two areas being thousands of kilometres apart.

A salt surge is enough to kick start circulation. Meanwhile, a decrease in saltiness in South African waters could be linked to a slowing down of the North Atlantic circulation, said Prof. Zahn.

Prof. Zahn said though models and data both indicate that these changes in ocean circulation over on a very short time-scale, usually in less than a decade or two (It takes nearly a century for a parcel of water to move from the South Atlantic to the North Atlantic), the energy is transferred through the ocean along a deep pressure wave.

The surge of salt generates a pressure gradient in the ocean that sends energy to the north without water actually being transported, said Prof. Zahn.

Currently there is no large-scale salt monitoring system in place in the southern hemisphere oceans. Regular measurements taken in the waters around South Africa and New Zealand could be useful. It could act as an early warning system for climate changes 10-20 years down the road, he said.

The work was presented at the Ocean Controls in Abrupt Climate Change conference, held at the University of Innsbruck Conference Centre in Obergurgl, tz Valley, Austria, May 19-24, 2007.


'"/>




Related medicine news :

1. In Search Of Drugs From the Ocean
2. Oceans May Turn More Acidic and Threaten Marine Life
3. Health Benefits from the Ocean Snail
4. Plastic May Be Poisoning Oceans: Scientists
5. New Study Links Western Wildfires to Atlantic Ocean Surface Temperatures
6. Protecting Oceans is Important to Keeping Planet Cool
7. Saving Powers Of The Ocean On The Wane
8. Southern Oceans Ability to Absorb CO2 Has Reached a Saturation Point: Study
9. Climate Change Signal Detected in the Indian Ocean
10. Global Warming Spurring Ocean Waves Speed
11. Lean Protein Could Be Key to Obesity Drugs
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/8/2016)... ... February 08, 2016 , ... ... states in the U.S. require dental technicians to be certified or obtain continuing ... industry, NADL created the “What’s In Your Mouth?” campaign to inform dentists and ...
(Date:2/7/2016)... ... February 07, 2016 , ... Women's Excellence staff, in all four locations, wore ... Wear Red Day is the first Friday each February and a day to bring ... in 3 deaths among women each year – more than all cancers combined. Go ...
(Date:2/7/2016)... ... 2016 , ... Dr. Todd Hobgood , certificated in ... surgical expertise. Technically known as deoxycholic acid or previously as ATX-101, Kybella® ... for reduction of fat below the chin (aka the “double chin”). Medication side ...
(Date:2/6/2016)... ... ... US Sports Camps is proud to sponsor the Bay Area Disc Association's ... leaders, ultimate organizations, and coaches from around the US. The theme for this year’s ... of Youth and Education, describes this year YUCC as “an important conversation we must ...
(Date:2/6/2016)... , ... February 06, 2016 , ... Shark Finds ... announce the launch of a new DRTV campaign with Belly Bands. , Having a ... everything from sprays to puppy pads and find nothing works, get Belly Bands, ...
Breaking Medicine News(10 mins):
(Date:2/8/2016)... Feb. 8, 2016   GS1 US will ... guide them through GS1 Standards implementation to address the ... Unique Device Identification (UDI) rule. Scott ... Beth Gibson , senior director industry development, medical devices, ... director, GS1 US --> Scott ...
(Date:2/8/2016)... Feb. 8, 2016 Nueterra, the ... specialized in the development of equity partnerships ... it has divided its interests between two ... Capital will continue the founding company,s private ... operate a national system of integrated provider ...
(Date:2/8/2016)... Pa. , Feb. 8, 2016   ... November Research Group (NRG),s pharmacovigilance technology services ... system-related consulting services and an Oracle Argus Specialized ... services to Life Sciences companies. ... and expands HighPoint,s life sciences capabilities and provides ...
Breaking Medicine Technology: