Extreme ocean winds and wave heights are increasing around the globe, with the largest rise occurring in the Southern Ocean, University of Melbourne research shows.
Researchers Ian Young and Agustinus Ribal, from the University’s Department of Infrastructure Engineering, analysed wind speed and wave height measurements taken from 31 different satellites between 1985-2018, consisting of approximately 4 billion observations.
The measurements were compared with more than 80 ocean buoys deployed worldwide, making it the largest and most detailed dataset of its type ever compiled.
The researchers found that extreme winds in the Southern Ocean have increased by 1.5 metres per second, or 8 per cent, over the past 30 years. Extreme waves have increased by 30 centimetres, or 5 per cent, over the same period.
As the world’s oceans become stormier, Professor Young warns this has flow on effects for rising sea levels and infrastructure.
“Although increases of 5 and 8 per cent might not seem like much, if sustained into the future such changes to our climate will have major impacts,” Professor Young said.
“Flooding events are caused by storm surge and associated breaking waves. The increased sea level makes these events more serious and more frequent.
“Increases in wave height, and changes in other properties such as wave direction, will further increase the probability of coastal flooding.”
Professor Young said understanding changes in the Southern Ocean are important, as this is the origin for the swell that dominates the wave climate of the South Pacific, South Atlantic and Indian Oceans.
“Swells from the Southern Ocean determine the stability of beaches for much of the Southern Hemisphere, Professor Young said.
“These changes have impacts that are felt all over the world. Storm waves can increase coastal erosion, putting costal settlements and infrastructure at risk.”
International teams, including the University of Melbourne, are now working to develop the next generation of global climate models to project changes in winds and waves over the next 100 years.
“We need a better understanding of how much of this change is due to long-term climate change, and how much is due to multi-decadal fluctuations, or cycles,” Professor Young said.
Learn more: 33-year study shows increasing ocean winds and wave heights
The Latest on: Ocean winds and wave heights
[google_news title=”” keyword=”ocean winds and wave heights” num_posts=”10″ blurb_length=”0″ show_thumb=”left”]
via Google News
The Latest on: Ocean winds and wave heights
- Rogue Waves Are Mysterious And Bigon June 9, 2023 at 5:00 pm
Tsunamis barely show up as more than a ripple in the ocean, only towering once they get close to breaking on the shore. Rogue waves are quite the opposite, standing at great height in open seas ...
- Rain chances and temperatures increaseon June 6, 2023 at 6:49 pm
Wednesday, partly cloudy with scattered showers and a few strong afternoon thunderstorms possible. High temperatures in the upper 80s and low 90s and light southwesterly winds.
- EC weather warning: Gale force winds, huge waves to lash coaston June 5, 2023 at 5:13 am
A level 4 weather warning has been issued as damaging winds and 9m-high waves will hit the Eastern Cape coastline. Very rough seas with wave heights of 4m to 5.5m are expected between Cape Agulhas ...
- Biggest waves recorded around New Zealand this year include one four storeys highon June 4, 2023 at 8:52 pm
Maximum wave height measured the largest ... “Ultimately, the wind drives the waves.” The depths of the Southern Ocean – below latitude 40 south, into the “roaring 40s”, “furious ...
- Four storeys high: The biggest waves recorded around NZ this yearon June 4, 2023 at 6:08 pm
Maximum wave height measured the largest single ... “Ultimately, the wind drives the waves.” And the Southern Ocean - below latitude 40 south, and deep into the “roaring 40s”, “furious ...
- Mini Heat Wave Concludeson June 2, 2023 at 10:00 am
Our mini heat wave peaks today but a cold front will push in from the N/NE overnight yielding a much cooler Saturday-forward. You might have heard of a back-door cold front before as typically normal ...
- Ocean ‘Kelvin waves’ detected, signaling an imminent El Niño patternon June 1, 2023 at 3:25 pm
A phenomenon called Kelvin waves has just been detected in the Pacific Ocean — a sign that the developing El Niño pattern is imminent.
- Heavy rain, strong winds to affect Myrtle Beach SC area beaches over long weekendon May 26, 2023 at 9:50 am
Visitors may see ocean waters closed to swimming, according to city. Weather service calls for gale force winds, dangerous surf.
- Typhoon Mawar bringing destructive winds and 'life-threatening' storm surge to Guamon May 24, 2023 at 9:27 am
A powerful typhoon taking aim at Guam could be the strongest tropical cyclone to impact the U.S. island territory in decades.
via Bing News