Feeds

Mid-Atlantic Ocean temperatures peaked in 1998

Cooling since then 'not caused by climate change'

Intelligent flash storage arrays

The water temperature in the subtropical Atlantic Ocean has cooled down since 1998, oceanographers report. Measurements since 1957 had shown a rise of more than ¼ of a degree up to that point, but between 1998 and 2006 the ocean stopped warming and cooled by 0.15°C in the same area.

The measurements of sea temperature were carried out along the parallel 24.5 degrees of latitude north of the equator running from the African coast to the Caribbean by Spanish government oceanographers. The oceanographers used a network of "Argo" instrument buoys and survey vessels. The scientists describe the cooling as "unusual".

"The ocean's natural variability mechanisms are more significant than we thought," says Pedro Joaquín Vélez Belchí of Spain's Canarian Oceanography Centre.

In the opinion of Vélez Belchí and his colleagues, the drop in temperature seen in the mid-Atlantic cannot be put down to climate change – in particular they don't consider that meltwater from glaciers or the polar cap is responsible. If that had been the underlying cause, a corresponding temperature drop "should have been observed clearly in the areas close to the North Pole", he says – and none was.

Rather, the oceanographers consider that the cooling may have resulted from wind-driven alterations in the circulation of water.

"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 2,000 metres deep," notes Vélez Belchí.

Outline details of the research were announced by the Spanish Foundation of Science and Technology (FECYT) yesterday, ahead of a further expedition intended to glean more data. A study by Vélez Belchí and his colleagues was published in the Journal of Physical Oceanography recently. ®

Security for virtualized datacentres

More from The Register

next story
Boffins who stare at goats: I do believe they’re SHRINKING
Alpine chamois being squashed by global warming
What's that STINK? Rosetta probe shoves nose under comet's tail
Rotten eggs, horse dung and almonds – yuck
Comet Siding Spring revealed as flying molehill
Hiding from this space pimple isn't going to do humanity's reputation any good
Kip Thorne explains how he created the black hole for Interstellar
Movie special effects project spawns academic papers on gravitational lensing
Experts brand LOHAN's squeaky-clean box
Phytosanitary treatment renders Vulture 2 crate fit for export
LONG ARM of the SAUR: Brachially gifted dino bone conundrum solved
Deinocheirus mirificus was a bit of a knuckle dragger
prev story

Whitepapers

Choosing cloud Backup services
Demystify how you can address your data protection needs in your small- to medium-sized business and select the best online backup service to meet your needs.
Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.