Navigation Links
The water temperature in the subtropical Atlantic falls due to wind action
Date:1/26/2011

The temperature of water situated in the subtropical Atlantic experienced a drop of 0.15C between 1998 and 2006. This has been revealed by a study led by the IEO (Spanish Oceanography Institute) which suggests that circulation caused by wind could be responsible for this "unusual" behaviour.

Whilst the water temperature in this area, situated along the 24.5 north parallel, from the African coast to the Caribbean, rose by 0.27C between 1957 and 1998, researchers have recorded a drop of 0.15C in the same area between 1998 and 2006.

"In the ocean there are very pronounced cycles of change, and therefore, changes like those which took place in the coordinates analysed can reoccur in any location and at any time", Pedro Joaqun Vlez Belch, main author and researcher for the IEO's Canarian Oceanography Centre, stresses to SINC.

According to the study, which was published recently in the Journal of Physical Oceanography, this phenomenon should not be linked to climate change. "The ocean's natural variability mechanisms are more significant than we thought", declares Vlez Belch. The team is considering various hypotheses to explain the change in temperatures.

For the scientists, this cooling could be due to "circulation forced by the wind". "Changes in the global structure of winds in the north Atlantic cause oscillations on the ocean's surface layer which can be felt up to 2000 metres deep", the expert points out.

However, the scientists discard the hypothesis of thawing despite the fact that some water masses, originating in the Antarctic and the Mediterranean, have an influence in the area analysed. The temperature drop "should have been observed clearly in the areas close to the North Pole", maintains Vlez Belch. And this was not the case.

The scientists measured the temperature and salinity of three oceanic layers: waters from the thermocline (300-800 metres), surface ocean (600-1800 metres) and intermediate waters (800-1.800 metros). The salinity recorded "similar" behaviour, as it is always linked to the temperature.

A new image of the ocean

The research team combined two methodologies: measurements using stations carried out from oceanographic research vessels, and the Argo network. With this network, consisting of 3000 indicators in all the oceans, "a new image of the surface ocean" is obtained. Spain is taking part in the Argo-Spain programme.

Through the new system, the scientists developed synthetic sections for each year (carried out from the laboratory with data from the Argo network's buoys), and analysed the annual variability for 2005, 2006, 2007 and 2008. "Between 2006 and 2008 there were no significant changes", the scientist declares.

As part of the Expedicin Malaspina 2010, the team will go on a new expedition to the same area in the coming weeks. "The work is pioneering in verifying how the Argo network can be of use for large-scale studies into oceanic variability", concludes Vlez Belch.


'/>"/>

Contact: SINC
info@plataformasinc.es
34-914-251-820
FECYT - Spanish Foundation for Science and Technology
Source:Eurekalert  

Related biology news :

1. Experts to discuss global water crisis
2. Commercial aquatic plants offer cost-effective method for treating wastewater
3. UNC study on properties of carbon nanotubes, water could have wide-ranging implications
4. Waterborne disease risk upped in Great Lakes
5. Turning freshwater farm ponds into crab farms
6. Ripple effect: Water snails offer new propulsion possibilities
7. NJIT professors research suggests changes in underwater data communications
8. Providing toilets, safe water is top route to reducing world poverty: UN University
9. Cold water corals conference to be held in Woods Hole
10. Scientists achieve first tracking of salmon from headwaters in Rockies through Pacific to Alaska
11. Scripps Florida scientists awarded $1.5M to fight major water and food parasites
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
The water temperature in the subtropical Atlantic falls due to wind action
(Date:3/22/2016)... , March 22, 2016 ... report "Electronic Sensors Market for Consumer Industry by Type ... Others), Application (Communication & IT, Entertainment, Home ... Global Forecast to 2022", published by MarketsandMarkets, ... expected to reach USD 26.76 Billion by ...
(Date:3/15/2016)... 15, 2016 --> ... Transparency Market Research "Digital Door Lock Systems Market - Global ... 2023," the global digital door lock systems market in terms ... and is forecast to grow at a CAGR of 31.8% ... and medium enterprises (MSMEs) across the world and high industrial ...
(Date:3/11/2016)... March 11, 2016 --> ... research report "Image Recognition Market by Technology (Pattern Recognition), ... Advertising), by Deployment Type (On-Premises and Cloud), by Industry ... published by MarketsandMarkets, the global market is expected to ... 29.98 Billion by 2020, at a CAGR of 19.1%. ...
Breaking Biology News(10 mins):
(Date:5/4/2016)... York, NY (PRWEB) , ... May 04, 2016 , ... ... (NF), a genetic disorder that causes tumors to grow on nerves throughout the body. ... or cure. , Through numerous community events held during the month of May, as ...
(Date:5/3/2016)... ... 03, 2016 , ... Morf Media Inc ., developer ... on mobile devices, today released a new interactive Food and Drug Administration ... course is essential for owners or operators of places of business that are ...
(Date:5/3/2016)... ... May 03, 2016 , ... ... , the sensor and data driven conferences, will take place on June 7-8, 2016, at the ... UnitedHealth's Vidya Raman-Tangella on incorporating technology -- including AR/VR, machine learning, apps, robotics and ...
(Date:5/2/2016)... NEW YORK , May 2, 2016 ... company announces that its technology partner Mannin Research Inc. ... and Ophthalmology (ARVO), which takes place from May 1-5, ... Research executives will be meeting with its vendors and ... further explore business development goals and other collaborative opportunities ...
Breaking Biology Technology: