North Atlantic News

A new study uses a method of tracking the strength of near-shore ocean currents from a distance via measurements of coastal sea level. (Photo by Carol Anne Clayson, Woods Hole Oceanographic Institution)

Florida Current is the Weakest Its Been in a Century

sea level change, used a connection between coastal sea level and the strength of near-shore currents to trace the evolution of the Florida Current, a key component of the Gulf Stream. The Gulf Stream flows north along the Southeast Atlantic Coast of the United States and eventually east into the North Atlantic Ocean, carrying heat, salt, momentum and other properties that influence Earth’s climate. Because nearly continuous records of sea level stretch back more than a century along Florida’s Atlantic Coast and in some parts of the Caribbean, he was able to use mathematical models and simple

(Photo: NOC)

Arctic Melt Leads to Enhanced Storms

Freshwater in the ocean leads to extreme cold patches in the North Atlantic, which has major implications for weather over the surrounding land-masses, a National Oceanography Center (NOC) led research team has found.“Traditionally, it was thought that freshwater leads to a decline in the large-scale ocean overturning circulation, which then results in a cooling of the North Atlantic. Our new study shows that freshwater achieves this cooling much more rapidly and efficiently by triggering atmospheric feedbacks,” said NOC's Marilena Oltmanns, lead author of the study published in the

A view of the bow of the Titanic (Photo: NOAA and the Russian Academy of Sciences)

Salvors Outline Plan to Recover Titanic's Telegraph System

landscape, we have no choice but to move this important expedition."The company also revealed details regarding its telegraph recovery process, including the subsea tooling that will be utilized at the wreck site more than a century after the historic ocean liner's tragic sinking in the North Atlantic.Many have opposed the salvage of the telegraph and other items from the wreck, saying these efforts desecrate the gravesite of the 1,503 passengers and crew who died on the ship's maiden voyage. A long string of litigation and controversy have surrounded the Titanic and its artifacts since

A marine technician hauls in the CTD (conductivity, temperature, and depth) rosette on a research cruise in the Sargasso Sea. © Maya Thompson

BIOS: North Atlantic Carbon Sink Shrinking Due to Warming

An analysis of North Atlantic Ocean water masses has made it clear that the effects of a warming planet extend beyond biology—they impact the physics of ocean circulation, too. The research, recently published in Nature Climate Change, was conducted by scientists from the University of British Colombia, the Bermuda Institute of Ocean Sciences (BIOS), the French Institute for Ocean Science at the University of Brest, and the University of Southampton.One particular layer in the North Atlantic Ocean, a water mass called the North Atlantic Subtropical Mode Water (STMW), represents around 20% of the

Logo: Offshore Wind Challenge

Offshore Wind Challenge Accepting Applications

be supported by experts from Woods Hole Oceanographic Institution (WHOI) and the New England Aquarium.Vineyard Wind is developing the first utility-scale offshore wind project which will eliminate 1.68 million metric tons of carbon dioxide emissions annually. Vineyard Wind is committed to protecting North Atlantic right whales and other marine species off the northeastern United States during all phases of the project’s development and operations.“Vineyard Wind is excited to kick off the application process today for the Offshore Wind Challenge alongside our partners at Greentown Labs,&rdquo

Nortek and Del Mar Oceanographic are collaborating to give researchers from around the globe a cost-effective way to answer vital questions surrounding the functioning of ocean processes. Image: Nortek

Case Study: Helping Ocean Researchers Obtain Hi-Resolution Measurements at a Lower Cost

presented a unique set of challenges that needed to be overcome during the Wirewalker’s development phase.The Wirewalker/Nortek combination has been used in several locations around the globe, including by the USA’s Office of Naval Research funded projects in the Bay of Bengal, the North Atlantic and North Pacific, as well as by the Scripps Institution of Oceanography off the coast of southern California, USA. The projects have covered two broad areas of research: 1) characterizing ocean mixed layer velocities free from the influence of surface waves, and 2) obtaining vertical resolution

Fig.1: A Slocum glider from Teledyne Webb Research, en route to deployment. Credit: Rutgers University.

Measuring the Hostile Ocean Beneath Hurricanes

spill in 2010 in the Gulf of Mexico, Slocum gliders collected subsurface data to support response work. Recent payloads have included turbulence sensors for measuring ocean mixing, bio-acoustic sensors for assessing zooplankton stocks off Antarctica, and hydrophones for near real-time monitoring of North Atlantic right whales off the east coasts of U.S. and Canada. Slocum gliders are serving new roles at Antarctic research sites as well, especially at the edge of ice sheets.Storm Monitoring GlidersFor the last decade, Slocum gliders from Teledyne Webb Research have monitored the challenging waters associated

Blue whale in the Pacific Ocean. Photo credit: Jessica Morten, Channel Islands National Marine Sanctuary, National Ocean Service, NOAA

Study: How Changes in Shipping Patterns Affect Whales

Understanding how changes in shipping traffic and distributions of fin, humpback, and blue whales in the Pacific Ocean affect the risk of whales being struck by ships is the focus of a new study published in the scientific journal, Frontiers. The findings also have implications for highly endangered North Atlantic right whales in the Atlantic Ocean.Dr. Jessica V. Redfern, an Ecologist, Senior Scientist, and Chair of the new Spatial Ecology, Mapping, and Assessment Program (EcoMap) at the New England Aquarium’s Anderson Cabot Center for Ocean Life, is the lead author of the study. She maps the location

Photo courtesy of GlobalStar

Drifter Buoys Aid Seaweed Research

Biologists are using drifter buoys fitted with satellite trackers to understand the dramatic increase of Sargassum seaweed across the North Atlantic.The relatively harmless Sargassum has started washing up in areas including the Caribbean and the southeast U.S. in such huge quantities that it is killing coral, impacting fishing and forcing the closure of beaches. By analyzing the GPS data transmitted from SPOT Trace trackers, researchers from the NIOZ Royal Netherlands Institute for Sea Research, The University of Amsterdam (UvA) and Utrecht University aim to understand where the free-floating,

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