In 1974, images acquired from NOAA satellites revealed a puzzling phenomenon: a 250,000 square kilometer opening in the winter sea ice in the Weddell Sea, south of South America. The opening, known as a polynya, persisted over three winters. Such expansive ice-free areas in the ocean surrounding Antarctica have not been seen since, though a small polynya was seen last year.
Between 1773 and 1775, George Gauld, a surveyor with the British Admiralty, immortalized the coast of the Florida Keys in ink. Though his most pressing goal was to record the depth of the sea — to prevent future shipwrecks — Gauld embraced his naturalist side, too. He sprinkled his maps with miscellany that later charts would omit: where sea turtles made their nests, or the colors and consistency of sand.
Trash skimmers are being deployed in harbors to collect growing amounts of garbage, but some scientists say resources would be better spent stopping the source of pollution. Kewalo Harbor is one of the Hawaiian capital’s busiest waterways. Each day, dozens of charter, diving and fishing boats filled with people – mostly tourists – motor in and out. Next to the harbor is Ala Moana Beach Park, a popular swimming, surfing and picnic spot. With all those people in and around the harbor comes a lot of trash. Kewalo Harbor, along with other aquatic tourism hotspots, is experiencing serious problems with pollution.
It’s been hard to stay away from the news and all of my favorite weather geek websites as the second major hurricane in three weeks made landfall in the U.S. My thoughts are with everyone in my home state as Florida continues to weather this catastrophic storm. Several of our member institutions were severely impacted by [...]
Where will it go? How strong will it be? When will it hit? Those are the answers everyone wants — not the least of which are the hurricane forecasters themselves.
Long-duration unmanned surface vehicles manufacturer Liquid Robotics has rolled out its next generation Wave Glider, featuring advancements to the platform’s operational range, and performance for missions in high sea states and high latitudes. Other updates include advancements for expanded sensor payloads and increased energy and storage capacity required for long duration maritime surveillance, environmental monitoring and observation missions.
Aquaculture will have to be the primary source of our seafood now and into the future. Seafood is an essential staple in the diets of people around the world. Global consumption of fish and shellfish has more than doubled over the last 50 years, and is expected to keep rising with global population growth. Many people assume that most seafood is something that we catch in the wild with lines, trawls and traps. In fact, aquaculture (aquatic farming) accounts for just over half of all the seafood consumed worldwide.
Quantitative analysis has evidenced the acceleration system of melting ice: dark water surfaces absorb more heat than white ice surfaces, thus melting ice and making more water surfaces in the Arctic Ocean. Ice-covered sea areas in the Arctic Ocean during summer have nearly halved since the 1970s and 1980s, raising alarm that the ocean is shifting from a multiyear to a seasonal ice zone. The Intergovernmental Panel on Climate Change (IPCC) has forecasted summer ice cover in the polar ocean might disappear almost completely as early as 2050. Various factors have been cited as causes, including rising temperatures and changes in atmospheric circulation patterns.
Like tree rings, these layered plates hold chemical clues to how the animals adapt to a changing world.Had he glanced over his shoulder just before the “great fish” swallowed him, biblical Jonah would have had an enviable view. Enviable, that is, if you’re Alex Werth, a landlocked biologist who studies the feeding anatomy of whales. “Ah, to be Jonah and watch baleen in action from a seat on a whale’s tongue,” he says. Baleen is the apparatus toothless whales rely on to filter food from the sea.
One day in late July, Donglai Gong was piloting his little quadcopter above his house when he noticed his drone camera picking up something odd in the York River below. “There were features, like, streaks of darkness,” Gong recalled Wednesday at the Virginia Institute of Marine Science in Gloucester Point. Gong is an assistant professor studying the physics of coastal and polar oceanography. “And, being a physicist, I had no idea what biological processes could be causing that. So I took some pictures. They looked pretty.”He emailed those pictures to VIMS colleagues, many of whom were biologists who knew exactly what was going on: a harmful algal bloom, or HAB.
(Click to enlarge) Global warming in the USA (Credit: Andrea Della Adriano/Flickr) There is something unusual about the Trump administration's appointment of NOAA's new deputy administrator: He believes climate change is real. Tim Gallaudet was nominated to be deputy administrator at NOAA last week. He will take the No. 2 slot at the agency [...]