What's New Archive
Kjell-Sture Johansen (NORUT), Dan Mock (AUV), Andreas TØllefsen (NORUT), Rune Storvold (NORUT), Scott Stalin (PMEL), Nick Delich (PMEL), Jim Johnson (PMEL), Hagen Teig (ESRL),Brad Hooper (AUV), Tej Dhakai (LDEO), and Scott Brown (LDEO) with partner groups after the final mission. Photo credit: Kjell-Sture Johansen
PMEL atmospheric chemists Trish Quinn and Tim Bates teamed up with other scientists and engineers to measure black carbon (soot) in the climate sensitive Arctic region. The scientists launched out of Ny-Ålesund, Norway using Mantas, an unmanned aerial systems (drones) to take measurements in the atmosphere, using a suite of sensors that could capture particle size and composition, light scattering properties and tracers that help detect the geographic origin of the particles. Scientists and engineers completed a total of 26 flights during this field season, in addition to sampling snow on the ground for black carbon deposition measurements. The data from flights and snow will help scientists better understand how black carbon is transported to the Arctic and to constrain its contribution to ice melt and warming in the Arctic.
PMEL and Oregon State University(OSU)/CIMRS scientist Bill Chadwick and Scott Nooner at the University of North Carolina Wilmington (UNCW) have successfully forecast the latest eruption of Axial Seamount, an active submarine volcano located about 300 miles off the coast of Oregon. Based on a swarm of earthquakes and large vertical movements of the seafloor, the eruption started on April 24, 2015. While instruments at the site clearly picked up on these signals, the activity is not strong enough to be felt by anyone on land or large enough to produce a tsunami. In the fall of 2014 the scientists posted a blog predicting that Axial would erupt within the next 15 months. They based their prediction on a repeated pattern of seafloor elevation changes before, during, and after eruptions since 1998.
This work has been possible through a cooperative effort that includes the PMEL Earth-Ocean Interactions Program, OSU/CIMRS, the University of Washington-led OOI Cabled Array, Monterey Bay Aquarium Research Institute, Lamont-Doherty Earth Observatory, UNCW and was funded by the National Science Foundation and NOAA. Please see the OSU press release.
The North Pacific Research Board’s multi-year Bering Sea Project strives to understand the effects of climate change and dynamic ice cover on the eastern Bering Sea ecosystem. Project Headlines make scientific results available to the general public. A recent PMEL contribution entitled Circulation on the Bering Sea Shelf Revealed by Temperature and Salinity Measurements summarizes research in which PMEL scientists augmented NOAA Alaska Fisheries Science Center bottom trawl surveys with instruments to measure ocean temperature and salinity profiles at over 350 sites in the Bering Sea. From those measurements, scientists inferred the ocean currents in this ecologically and economically rich region during the summers of 2008-2010. Those observations help us to understand the ecosystem, measure its variability, and calibrate predictive computer models that estimate future conditions under different climate scenarios. More Bering Sea Project Headlines are available here.
A 30-year history of the NOAA Vents program was published in Oceanography. In 1983, a small team of NOAA PMEL scientists, subsequently joined by colleagues at Oregon State University (CIMRS) and the University of Washington (JISAO), exploited new seafloor and water column mapping technologies to understand the impact of hydrothermal systems on ocean chemistry and seafloor ecosystems. The first decade featured fundamental discoveries about physical, biological, chemical, and oceanographic consequences of deep submarine eruptions. Partnering with international researchers, Vents made the first ever time-series studies of active submarine eruptions. Vents research set global standards for an observation-driven understanding of the transfer of heat, chemicals, and organisms from Earth’s hot interior into the ocean.
In 2013, the Vents Program was restructured into two new programs, Earth-Ocean Interactions and Acoustics, continuing the Vents legacy while focusing directly on NOAA strategic goals in ocean processes and ecosystems.
On Thursday, April 2nd, NOAA/PMEL Director Chris Sabine will discuss NOAA’s role in detecting ocean acidification and measuring community vulnerability to understand risk during Sound Conversations at the Seattle Aquarium. The Seattle Aquarium hosted the 3rd phase of the Wendy Schmidt Ocean Health XPRIZE aimed at developing affordable and accurate pH sensors. As a leader in ocean acidification research and detection, NOAA/PMEL scientists are providing validation measurements for the XPRIZE contest. By developing breakthrough ocean pH sensors, researchers, fisheries and resource managers, and environmental groups throughout the world will be able to measure ocean acidification in more places and with better resolution to increase the understanding of the risk ocean acidification poses to shellfish, coral reefs, and fisheries. This event is aimed at bringing the ocean acidification community together to learn about new innovative approaches to addressing ocean acidification from leaders in research, policy, and public engagement.
Philippe Cousteau joined researchers from PMEL and UW/JISAO at the Seattle Aquarium, where Phase 3 of the Wendy Schmidt Ocean Health XPRIZE contest was wrapping up this weekend. Following one month of data collection, the 14 teams' pH sensors were removed from a flow tank filled with Puget Sound seawater, and the data were downloaded.
The $2M Ocean Health XPRIZE is a competition to create accurate and affordable pH sensors that can be used around the globe. The development of this technology, which will help scientists map and characterize ocean chemistry globally, is of utmost importance as ocean acidification (a change in seawater chemistry resulting from CO2 absorption) is expected to impact the health of a number of vulnerable ecosystems around the world including coral reefs, shellfish, and fisheries.
The Submarine Ring of Fire ’14 cruise is completed and PMEL scientists are back in the lab analyzing the data. While underway, 19 short videos were created by Saskia Madlener with music by Charlie Brooks. Take a look at the videos to get a sense of what life on the ship was like and how the scientists dealt with successes and challenges at sea. Despite problematic weather, the scientists were able to get biological, chemical, geological and acoustic data over the duration of the cruise, using hydrographic instruments and the remotely operated vehicle Jason.
The NOAA-led Arctic Report Card was released today. The annual assessment of change in the Arctic shows the region continues to outpace the rest of the globe in response to climate change, warming at twice the rate of anywhere else on earth.
The report documents changes in air temperature, sea surface temperature, snow cover, sea ice extent, the Greenland ice sheet, ocean productivity, and vegetation over the tundra. A special addition this year includes an assessment of polar bear population dynamics in several different regions of the Arctic.
On November 29th, 2014, 11 PMEL, JISAO, and CIMRS scientists embarked on an exciting journey aboard the R/V Roger Revelle to revisit the Submarine Ring of Fire. Located west of the Mariana trench, the mission will visit NW Eifuku and NW Rota, two active hydrothermal systems where scientists will examine the emission of carbon dioxide as it provides a natural laboratory to observe and measure how ocean acidification can affect marine ecosystems. The cruise is funded by NSF and NOAA's Ocean Exploration and Research program.
Follow along with the scientists on the Ocean Explorer website where mission logs will be updated regularly.