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









Audi Melges 20 World Championship - Final race to decide champion by International Audi Melges 20 Class Association,










Fort Lauderdale International Boat Show - 13 things to See and do by Fort Lauderdale International Boat Show,




Volvo Ocean Race: Update from Team Vestas Wind in images by Richard Gladwell/Sail-World.com/nz,








Audi Melges 20 World Championship - Classic Garda conditions on day 2 by International Audi Melges 20 Class Association,
























Audi Melges 20 World Championship - Alessandro Rombelli's 'STIG' leads by International Audi Melges 20 Class Association,












Audi Melges 20 World Championship - Day 1 images by Max Ranchi
Clagett Regatta names first Executive Director
Transatlantic Race - Fleet expanded for 2015 edition
IFDS World Championship overall
Anna Tunnicliffe: Alinghi finishes second - Extreme Sailing Series
2014 18' Skiff International Regatta - Day 2
2014 Audi Melges 20 World Championship - It's go time in Garda
2nd Annual Keith Dinsmoor Regatta September 13-14
Aldo Alessio Regatta - Three days of tight racing
PWA Alacati World Cup - First blood to Van Der Steen and Offringa
Oakcliff Sailing hosts the Nacra 17, 49er and 49erFX Nationals + Video
International 18ft Skiff Regatta underway on San Francisco Bay
Maxi Yacht Rolex Cup 2014 - Quality fleet for Maxi Classic
Sailing Champions League - which is Europe's best sailing club?
Weta fun at the Wine & Roses Regatta
Extreme Sailing Series: The Wave, Muscat claims victory on Cardiff Bay
International 14 World Championships 2015: Not just for boys
Rio de Janeiro achieves 50% treatment of sewage outflow *Feature
2014 AWT Quatro Desert Showdown - Event memorable videos
2014 18' Skiff Int Regatta: Day 1 at San Francisco - Reversal on beach
Emirates Team NZ: Last race boost cannot save team from table bottom   
PWA Alacati World Cup - Furious slalom is upon us   
J/111 World Championships - The Winner is Shmokin Joe!   
J/24 US National Championship - Victory for Will Welles’ Cougar   
Extreme Sailing Series: View the Final Day's action - Replay   
NYYC Grandmasters Team Race - Reign continues for Noroton Yacht Club   
WSSR announces new World Record Around Britain and Ireland   
IFDS Worlds 2014 - Final day photos by Tim Wilkes   
2014 Detroit Cup - Morvan wins   
Newport Bucket Regatta 2014 -Images by George Bekris   
IFDS Worlds 2014 - Final report: USA qualifies for Rio 2016   
Extreme Sailing Series: Absent With-Out Leave – Ben Ainslie Racing   
2014 IFDS World Championship - New champions claim medals   
2014 IFDS World Championships - Sunday’s race images by Tim Wilkes   
Shark World Championships underway in Toronto   
Anna Tunnicliffe: Alinghi second o'all - Extreme Sailing Series, Day 3   
Formula Kite World Championships - Nocher and Bridge crowned Champions   
Emirates Team NZ: Frustrating Day 3 in Extreme Sailing Series, Cardiff   
Extreme Sailing Series: Light winds help The Wave Muscat - Day 3   
Extreme Sailing Series 2014 Act five - Absent without leave – the wind   


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 WAS US
LocalAds   DE  ES  FR  IT