sail-world.com
 
 
News Home Cruising Photo Gallery Video Gallery

 

Sail-World.com : Wind and waves growing across the globe

Wind and waves growing across the globe

'Bernard Stamm (Cheminees Poujoulat), fights to for survival in a Force 10 storm in mountainous seas the Bay of Biscay, the day after the start of the VELUX 5 Oceans solo round the world yacht race.'    onEdition ©

Oceanic wind speeds and wave heights have increased significantly over the last quarter of a century according to a major new study undertaken by Australian researchers.

The results of the research program – the most comprehensive of its kind ever undertaken – have been published today in the prestigious journal Science.

Studies of climate change typically consider measurements or predictions of temperature over extended periods of time. However this study examined global changes of oceanic wind speed and wave height, which are also important environmental indicators.

It was authored by former Swinburne University Vice-Chancellor Professor Ian Young, who earlier this month became Vice-Chancellor of the Australian National University and Swinburne oceanographers Professor Alex Babanin and Dr Stefan Zieger.

'Winds and waves control the flux of energy from the atmosphere to the ocean,' Professor Young said. 'So an understanding of whether their parameters are changing on a global scale is very important.'

In conducting the study, the researchers analysed satellite data over a 23 year period from 1985 to 2008.

'We found a general global trend of increasing values of wind speed and, to a lesser degree, wave height over this period. The rate of increase for extreme events was most significant.'

The data showed that wind speeds over the majority of the world’s oceans increased by 0.25 to 0.5 per cent every year. For extremely high winds, speed increased by a yearly average of 0.75 per cent.

The global increase in wave height was most significant for extreme waves, with the largest one per cent increasing by an average of 0.5 per cent every year. However in some parts of the ocean, extreme waves increased by up to one per cent per annum.

'For example, today the average height of the top one per cent of waves off south-west Australia’s coastline is around six metres. That’s over one metre higher than in 1985,' Professor Babanin said.

According to Professor Young it was the researchers’ access to satellite data that enabled them to conduct such a comprehensive study.

'Previous attempts to investigate global trends in oceanic wind speed and wave height have relied on visual observations, point measurements or numerical modeling. Due to these limitations, researchers have only been able to examine changes to wind speed and wave height on a regional basis.

'However our study used recently developed satellite altimeter data sets, which enabled us to investigate trends on a global scale. This has really given us a much clearer picture of what is happening in the world’s oceans.'

The study was funded under an Australian Research Council Linkage Grant, with sponsorship from MetOcean Engineers.

Swinburne University of Technology Website




by Swinburne University of Technology

  

Click on the FB Like link to post this story to your FB wall

http://www.sail-world.com/index.cfm?nid=81742

11:06 AM Sat 26 Mar 2011 GMT






Click here for printer friendly version
Click here to send us feedback or comments about this story.


News - USA and the World





























ISAF Sailing World Championships - Watch medal races live here by Dan Ibsen, Sail-World Europe & UK editor,








470 Men and Women Worlds - Vadlau and Ogar into pole position by 470 International Association Class,




ISAF Sailing Worlds, Santander - Strong competition for RS:X fleets by Olga Maslivets, International RS:X Class Assoc.,


























2014 Chicago Match Cup - Starts tomorrow
Rio 2016 Daylight the issue for Olympic sailing regatta
ISAF Sailing World Championships - USA 470's and Lasers battle at top
ISAF Sailing World Championships - Santander - Day 5 video highlights
ISAF Sailing World Championships - Santander images by Jesús Renedo
PWA Cold Hawaii World Cup - No action on day 2
470 Men and Women Worlds - Game on for Olympic Qualification
ISAF Sailing World Championships: Finns off to slow start in Santander
ISAF Sailing World Championships - Seesaw Day 5 in Santander + Video
ISAF Sailing World Championships - 470 sailors shine in Santander
Royal Cup Marina Ibiza - Kiwi Ray Davies returns to TP52 fleet
Starboard Hatteras Wave Jam - No windsurfing action on day 1
A complete recap of the most successful Melges 20 World Championship
Rolex Big Boat Series - Prizegiving images by Chuck Lantz
ISAF Santander - Upwards path for Austrian women's 470 crew + video
18ft skiffs: Carnage compilation from the glory days of the Grand Prix
ISAF Worlds: Video from the British Sailing Team
Bart's Bash expected to set new records this weekend
PWA Cold Hawaii World Cup - Marcilio Browne wins Super Session
470 Men and Women World Championships - Racing abandoned on day 2
ISAF Sailing World Championships - Day 4 images from Santander   
ISAF Sailing Worlds, Santander: Emerging Nations Program sailors shine   
ISAF Sailing Worlds, Santander - Teasing winds play havoc on day 4   
ISAF Sailing World Championships: Hot conditions in Santander on day 4   
Santander ISAF Sailing World Championships joins Bart’s Bash   
PWA Cold Hawaii World Cup - Grounded fishing boat creates problems   
Marseille One Design - GC32 Armin Strom Sailing Team emerge victorious   
Rolex Big Boat Series 2014 - Ready for another 50 years   
2014 Rolex Big Boat Series - Farr 40 Day 4   
2014 Rolex Swan Cup - Eleventh-hour victories   
Extreme Sailing Series - Kiwis clinch Act win in Istanbul + Video   
2014 Rolex Big Boat Series - Two long races today for the J70 fleet   
2014 Rolex Big Boat Series - Impressive to sail out of the Golden Gate   
Extreme Sailing Series - Istanbul delivers four days of great racing   
ISAF Sailing Worlds Santander - Day 3 images by Sail-World.com   
Extreme Sailing Series: Emirates Team NZ bounces back for series win   
Santander 2014 ISAF Worlds - Light winds and current test six classes   
ISAF Sailing World Championships - Solid Day 3 for US Sailing Team   
ISAF Sailing World Championships - Day 3 images by Jesus Renedo   
Marseille One Design 2014 - GC32 Armin Strom blitzes final day   


For this week's complete news stories select    Last 7 Days
   Search All News
For last month's complete news stories select    Last 30 Days
   Archive News







Sail-World.com  


















Switch Default Region to:

Social Media

Asia

Australia

Canada

Europe

New Zealand

United Kingdom


http://www.sail-world.com/event_images/image/Twitter_logo_small.png http://www.sail-world.com/event_images/image/FaceBook-icon.png  http://www.sail-world.com/event_images/image/RSS-Icon.png

United States

Cruising Northern

Cruising Southern

MarineBusiness World

PowerBoat World

FishingBoating World

 

Contact

Commercial

News

Search

Contact Us

Advertisers Information

Submit news/events

Search Stories/Text

Feedback

Advertisers Directory

Newsletter Archive

Photo Gallery

 

Banner Advertising Details

Newsletter Subscribe

Video Gallery

Policies

 

 

 

Privacy Policy

 

 


Cookie Policy

 

 



This site and its contents are © Copyright TetraMedia and/or the original author, photographer etc. All Rights Reserved.  Photographs are copyright by law.  If you wish to use or buy a photograph contact the photographer directly.
XLXL NEW US
LocalAds   DE  ES  FR  IT