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by AFP Staff Writers Washington (AFP) Sept 30, 2021
In a world first, US scientists on Thursday piloted a camera-equipped ocean drone that looks like a robotic surfboard into a Category 4 hurricane barreling across the Atlantic Ocean. Dramatic footage released by the National Oceanic and Atmospheric Administration showed the small craft battling 50-feet (15 meter) high waves and winds of over 120 mph (190 kph) inside Hurricane Sam. The autonomous vehicle is called a "Saildrone" and was developed by a company with the same name. Powered by wind and 23 feet (seven meters) in length, it carries a specially designed "hurricane wing," designed to withstand punishing conditions as it collects data to help scientists learn more about one of Earth's most destructive forces. Saildrone's website indicates it can record measurements like wind speed and direction, barometric pressure, temperature, salinity, humidity and more. "We expect to improve forecast models that predict rapid intensification of hurricanes," said NOAA scientist Greg Foltz in a statement. "Rapid intensification, when hurricane winds strengthen in a matter of hours, is a serious threat to coastal communities," and data collected from uncrewed systems will help improve models, he added. Scientists warn that climate change is warming the ocean and making hurricanes more powerful, posing an increasing risk to coastal communities.
New clean energy tech extracts twice the power from ocean waves Melbourne, Australia (SPX) Aug 18, 2021 Researchers have developed prototype technology that can double the power harvested from ocean waves, in an advance that could finally make wave energy a viable renewable alternative. The untapped potential of ocean wave energy is vast - it has been estimated that the power of coastal waves around the world each year is equivalent to annual global electricity production. But the challenges of developing technologies that can efficiently extract that natural power and withstand the harsh ocea ... read more
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