National Oceanic and
Atmospheric Administration
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What's Happening Archive

September 25, 2020
Yellow surface buoy being pulled up on to the back deck of a NOAA Ship by crew and scientists in life jackets.

NOAA scientists and crew on NOAA Ship Oscar Dyson deploy a mooring in the Bering Sea to monitor ocean acidification in 2019. Moorings give researchers an expanded view of the remote corners of the world's ocean sproviding near-continuous, year-round measurements. Credit: NOAA Corps LT Laura Dwyer/ NOAA.

September 25, 2020

From spring to early fall in a typical year, NOAA and research partners conduct several important scientific surveys in the U.S. waters of the Bering and Chukchi Seas. Scientists collect oceanographic and biological data that are used to inform fisheries management, monitor whale populations and support Arctic ecosystem and climate studies.

This annual research is essential to understanding a rapidly changing Arctic.

But this was no usual year due to the COVID-19 pandemic. While NOAA has had to cancel many of its planned research surveys in Alaska, it has been able to conduct a number of scaled-back research surveys in 2020. One such survey that will be finishing up this week is in the Arctic and was conducted on board NOAA Ship Oscar Dyson to collect critical data supporting a long time series involving many scientific partners.

Collecting key Arctic data

With the help of the Oscar Dyson’s crew, which has gone above and beyond their normal duties to assist the scientists during the survey and ensure the continued collection of data, scientists are retrieving and deploying some of the moorings that gather data year-round in the Bering and Chukchi Seas. These moorings are equipped with sensors to collect measurements of nutrients and oceanographic conditions (including currents, temperature, salinity, oxygen, and fluorescence) to better understand the health of this marine ecosystem and how it may be changing. Some of the mooring sites have been operating continuously for more than 20 years and provide critical ocean measurements during the ice-covered winter and spring months. 

The science team and Oscar Dyson survey team are also collecting physical, chemical and biological water column data in an effort to document ongoing ecosystem changes in the U.S. Arctic. The science team is also sampling the water column for phytoplankton, single-celled plants, in order to monitor harmful algal blooms and are collecting environmental DNA from water samples to document the biodiversity present in the environment.

Gaining insights on marine life

Scientists at the Alaska Fisheries Science Center also hope to retrieve passive acoustic data from year-round moorings to learn more about where whales move throughout the year. Of particular interest is how whales responded to a more typical, colder winter in 2019 than the extremely warm conditions during the previous two years.

The survey team deployed new pop-up floats for NOAA’s Pacific Marine Environmental Laboratory to map the “cold pool”. The cold pool is a layer of cold bottom water (less than 35°F (2 °C) at approximately 98 feet (30 meters), which results from melting sea ice in the previous winter and spring, and plays a key role for the Bering Sea ecosystem. It can act as a corridor for Arctic fish species and a barrier for sub-Arctic species. The cold pool can restrict movement of commercially important walleye pollock and Pacific cod into northern waters. In the past few years, the cold pool has been markedly smaller, allowing large-scale northward expansions of typically sub-Arctic fish, crab and zooplankton into the Bering Sea.

“What is really remarkable about this survey is that scientists and crew are stepping forward to collect data for fellow scientists who aren’t able to get out this year,” said Phyllis Stabeno, NOAA PMEL oceanographer. “It’s a great example of teamwork at its best.”

The Oscar Dyson team has already retrieved four seafloor-mounted acoustic moorings for Alex De Robertis, an Alaska Fisheries Science Center fisheries biologist. Data collected by these moorings will help quantify the migrations of walleye pollock between U.S. and Russian waters.

Read more about the research cruise on NOAA Research

June 24, 2020

The US Arctic and Bering Sea are big, remote, and harsh environments. PMEL's Innovative Technology for Arctic Exploration program and Engineering Development Division have been developing autonomous technologies and tools to collect critical data to better understand changes in the oceans and its impact on food security, sea ice forecasts, weather and climate.

Drones and gliders are not designed for ice edge and can offer a new perspective on Arctic science, exploring new areas of the Arctic Ocean. One critical area of study is the melting edge of the seasonal ice pack. The timing and speed of annual ice retreat is changing each year, and could have a big impact on ecosystems and global weather patterns. PMEL is pushing the envelope to further develop gliders and drones to advance the science near the ice edge to explore how it moves and changes.

Check out the video on our YouTube Channel to learn more about NOAA PMEL’s autonomous observing technology in the Arctic:

February 25, 2020
A mooring used by EcoFOCI in the Bering Sea to understand the determine the influence of the physical and biological environments on marine populations and the subsequent impact on fisheries

EcoFOCI maintains an array of four moorings on the southeastern Bering Sea Shelf that collect year-round measurements to better understand the mechanisms and changes that may impact the productive marine ecosystem. 

February 26, 2020

The northern Bering and Chukchi Seas are among the world’s most productive ocean areas. They are home to millions of seabirds and marine mammals and vibrant Indigenous cultures. The region has also long been one of the fastest warming places on the planet. In a recnetly published paper in Nature Climate Change, a multi-disciplinary team of academic, government, and private sector scientists reports that dramatic changes in these Arctic ecosystems due to warmer ocean conditions. The scientific team, participating in a four-year Arctic Integrated Ecosystem Research Program, observed conditions more typical of subarctic ecosystems.

"The rate of change over the study timeframe came as a shock. Having a team with the expertise to put together the pieces across the whole ecosystem simply drives home how far-reaching the changes are and how much they matter," said Henry Huntington, lead author of the study.

Some key observations over the past several years of the study include:

  • Near-bottom waters that typically remained close to freezing year-round have in the past four years warmed for several months in the summer and fall.
  • Sea ice that used to start forming each fall has been absent or sparse into January and February and the spring ice retreat was earlier than normal in recent years.
  • Juvenile Arctic Cod, which dominate pelagic fish communities in the northern Chukchi Sea, were substantially more abundant in 2017 than in 2012 and 2013.
  • In 2017 pink salmon were observed to have increased dramatically in abundance in the northern Bering Sea
  • Bowhead whales that typically migrate south of St. Lawrence Island were observed year-round north of the Bering Strait.
  • Ice seals were absent from vast portions of some of their main breeding areas, and dead seals were reported in unusually high numbers on the Bering and Chukchi coasts.

The North Pacific Research Board, in cooperation with other organizations funded the Arctic Integrated Ecosystem Research Program. The goal of the program was to better understand the mechanisms and processes that structure the ecosystem and influence the distribution, life history, and interactions of biological communities in the Chukchi Sea.  Previous integrated ecosystem programs were undertaken in the Bering Sea and Gulf of Alaska.

The big question for scientists remains whether these changes reflect a new norm. Collaborative research efforts like this are important because they allow scientists to monitor changes as they are happening and provide meaningful information to local communities and resource managers so they are better able to respond and adapt.

The team of authors includes physical and biological oceanographers, ichthyologists, ornithologists, marine mammalogists, marine ecologists, and social scientists, from the University of Alaska Fairbanks, the University of Washington, the National Oceanic and Atmospheric Administration, the Alaska Department of Fish and Game, the North Slope Borough Department of Wildlife Management, the North Pacific Research Board, Stantec, and Huntington Consulting.

PMEL's EcoFOCI program was involved with the study. EcoFOCI is a joint research program between NOAA's Pacific Marine Environmental Lab and NOAA's Alaska Fisheries Science Center. EcoFOCI scientists integrate field, laboratory and modeling studies to determine how varying biological and physical factors influence large marine ecosystems within Alaskan waters.

Read the full press release here


February 14, 2020
Ocean Sciences Meeting Banner with Wave Background
February 14, 2020

41 scientists from PMEL, including scientists from NOAA's cooperative institutes at the University of Washington's Joint Institute for the Study of the Ocean and Atmosphere (JISAO) and Oregon State University's Cooperative Institute for Marine Resources Studies (CIMRS), the National Research Council, graduate and undergraduate students are heading to the Ocean Sciences Meeting in San Diego to share their current research. Talks and posters cover a range of topics include saildrone research, ocean observing systems, marine heatwaves, Arctic, acoustics, Deep Argo, genetics and genomics, El Nino, hydrothermal vents, methane, nutrients, technologies, ocean carbon and data management.

The 2020 Oceans Science Meeting is the flagship conference for the ocean sciences and the larger ocean-connected community.  As we approach the UN Decade of Ocean Science for Sustainable Development, beginning in 2021, it is increasingly important to gather as a scientific community to raise awareness of the truly global dimension of the ocean, address environmental challenges, and set forth on a path towards a resilient planet. The meeting is co-sponsored by the American Geophysical Union (AGU), the Association for the Sciences of Limnology and Oceanography (ASLO), and The Oceanography Society (TOS).

PMEL research groups that will be present at the conference are: AcousticsArctic including Innovative Technology for Arctic ExplorationClimate-Weather InterfaceEarth-Ocean InteractionsEcoFOCIEngineering, Genetics and GenomicsGlobal Tropical Moored Buoy Array, , Large Scale Ocean PhysicsOcean CarbonOcean Climate StationsPacific Western Boundary Currents, and Science Data Integration Group.

December 31, 2019
M2, a biophysical mooring, nicknamed Peggy after Peggy Dyson being deployed in the Bering Sea.

M2, a biophysical mooring, nicknamed Peggy after Peggy Dyson being deployed in the Bering Sea. The biophysical mooring site 2 (M2) is one of the longest running time series of its kind providing near-continuous measurements since 1995 in the southeastern Bering Sea.

December 31, 2019

This past fall, NOAA PMEL's Ecosystems and Fisheries-Oceanography Coordinated Investigations (EcoFOCI) program recovered a surface mooring “Peggy” at the biophysical mooring site 2 (M2) adding a prestigious marker to this time series by providing near-continuous, year-round measurements of the southeastern Bering Sea since 1995. Moorings, like M2, give researchers an expanded view of the remote corners of the world's oceans, in this case, measuring temperature, salinity, nitrate, chlorophyll, and currents in this highly productive area. Data used from M2 have been instrumental in studying the loss of sea ice in the Bering Sea, understanding the physics of the Cold Pool and developing the Oscillating Control Hypothesis.

The Bering Sea supports large marine mammal and bird populations and some of the most profitable and sustainable commercial fisheries in the United States. Continuous monitoring of oceanographic conditions from this region provides critical data to support sustainable management of these living marine resources in the Bering Sea. 

On March 13, 1995, the M2 surface mooring, nicknamed ‘Peggy’, was deployed from the NOAA Ship Miller Freeman. The surface buoy pays homage to Peggy Dyson, who for 25 years, from her home in Kodiak, Alaska, reported the weather, family messages, and sometimes even paid bills for the mariners of the North Pacific Ocean. She began the radio calls on WBH-29 in 1974 for her husband, late commercial fishing pioneer Oscar Dyson (namesake of the NOAA Ship Oscar Dyson), to give him weather reports. Peggy became the ‘voice of the north’ and even worked with the NOAA weather service to provide real-time ship-to-shore information to aid forecasters in refining their data, which she did until 1999.

This is a true testament to the regionally focused fisheries-oceanography research program, EcoFOCI, in forecasting the need for long-term monitoring of the Bering Sea as well as providing strong science, information fisheries recruitment and implications to regional fisheries management councils. With the enhancement of Arctic-driven technologies at NOAA's Pacific Marine Environmental Laboratory, it is now possible to enhance the M2 site while continuing to meet the goals and responsibility of NOAA and provide solid science for the management of Alaska’s marine ecosystems. 

Visit the EcoFOCI website for more information about research done in the Bering Sea, Gulf of Alaska, and Arctic waters. 

December 10, 2019
The proportion of old, thick ice in the Arctic's winter maximum ice pack has dropped from more than a third in the mid-1980s to barely just 1 percent today

The proportion of old, thick ice in the Arctic's winter maximum ice pack has dropped from more than a third in the mid-1980s to barely just 1 percent today. See more visual highlights:

December 10, 2019

NOAA recently released the 2019 Arctic Report Card at the American Geophysical Union Fall Meeting providing updates on the ongoing impact of changing conditions in the Arctic on the environment and communities, especially from continued warming and record sea ice loss. This work brings together 81 scientists from 12 nations to provide the latest in peer-reviewed, actionable environmental information on the current state of the Arctic environmental system relative to historical records.

The average annual land surface air temperature north of 60° N for October 2018-August 2019 was the second warmest since 1900. The warming air temperatures are driving changes in the Arctic environment that affect ecosystems and communities on a regional and global scale.

In the marine environment, ​August mean sea surface temperatures in 2019 were 1-7°C warmer than the 1982-2010 August mean in the Beaufort and Chukchi Seas, the Laptev Sea, and Baffin Bay. Arctic sea ice extent at the end of summer 2019 was tied with 2007 and 2016 as the second lowest since satellite observations began in 1979. The thickness of the sea ice has also decreased, resulting in an ice cover that is more vulnerable to warming air and ocean temperatures. The winter sea ice extent in 2019 narrowly missed surpassing the record low set in 2018, leading to record-breaking warm ocean temperatures in 2019 on the southern shelf. Bottom temperatures on the northern Bering shelf exceeded 4°C for the first time in November 2018. Bering and Barents Seas fisheries have experienced a northerly shift in the distribution of subarctic and Arctic fish species, linked to the loss of sea ice and changes in bottom water temperature.

Less than 1 percent of Arctic ice has survived four or more summers​ In March 1985, sea ice at least four years old made up 33 percent of the ice pack in the Arctic Ocean; in March 2019, ice that old made up 1.2 percent of the pack. Instead, more than three-quarters of the winter ice pack today consists of thin ice that is just a few months old, whereas in the past it was just over half.

PMEL’s Dr. James OverlandDr. Muyin Wang, Dr. Kevin Wood, and Dr. Carol Ladd contributed to sections on surface air temperature, sea ice and sea surface temperatures. 

Read more highlights and the full Arctic Report card here.

The NOAA Press Release can be found here.  

December 11, 2018
These maps show the age of sea ice in the Arctic ice pack in March 1985 (left) and March 2018 (right). Less than 1 percent of Arctic ice has survived four or more summers.

These maps show the age of sea ice in the Arctic ice pack in March 1985 (left) and March 2018 (right). Less than 1 percent of Arctic ice has survived four or more summers. See more visual highlights of the Arctic Report Card on NOAA

December 11, 2018

December 11 - NOAA released the 2018 Arctic Report Card at the American Geophysical Union fall meeting in Washington, D.C today bringing together the work of 81 scientists from 12 nations to provide the latest in peer-reviewed, actionable environmental information on the current state of the Arctic environmental system relative to historical records.

The Arctic continued it long-term warming trend in 2018, warming at twice the rate relative to the rest of the globe with Arctic air temperatures for the past five years (2014-18) exceeding all previous records since 1900. Arctic sea ice in 2018 remained younger, thinner, and covered less area than in the past. The 12 lowest extents in the satellite record have occurred in the last 12 years. In the Bering Sea, winter sea ice extent reached a record low for virtually the entire 2017-2018 ice season, which typically begins to form at the beginning of October, expands through the winter and then melts through the spring. During two weeks in February, typically the height of winter, the Bering Sea lost significant ice cover, about ~215,000 km2 or about the size of Idaho. Ocean primary productivity levels in 2018 were sometimes 500% higher than normal levels in the Bering Sea which is linked to the record low sea ice extent in the region. The Bering Sea is an important commercial fishing region and supports a vibrant sea ice-ecosystem with abundant seals, birds, and other pelagic species that critically depend on the timing of sea ice formation and retreat. 

Continued warming of the Arctic atmosphere and ocean are driving broad change in the environmental system in predicted and, also, unexpected ways. New emerging threats are taking form and highlighting the level of uncertainty in the breadth of environmental change that is to come. For more details, visit the Arctic Report Card website:

PMEL’s Dr. James Overland  and Dr. Muyin Wang co-authored the surface air temperature essay and Dr. Carol Ladd co-authored the sea surface temperature essay.

Read the NOAA Press Release here

Watch the video highlights on YouTube here 

October 17, 2018
Acoustic Doppler Current Profiler (ADCP) subsurface mooring being deployed off the back of the NOAA Ship Oscar Dyson in the Bering Sea.

Acoustic Doppler Current Profiler (ADCP) subsurface mooring being deployed in the Bering Sea from the NOAA Ship Oscar Dyson. 

October 17, 2018

This weekend, the EcoFOCI program completed its eleventh and final research cruise of its field season on the F/V Aquila to maintain and enhance an innovative array of biophysical moorings in conjunction with annual ship-based hydrographic data in the Bering Sea.

The team recovered 14 and deployed 10 moorings, including swapping the M2-site surface mooring for a sub-surface mooring to prevent damage from the ice to ensure 25 years of nearly continuous data. Scientists from PMEL, NOAA Fisheries Alaska Science Center and University of New Hampshire also collected some measurements from a CTD (conductivity-temperature-depth), nutrients, oxygen, plankton and larval fish along the Distributed Biological Observatory (DBO) Line 1, which has only been sampled once in 2017. These DBO lines are designated “hot spots” centered on locations of high productivity, biodiversity and rates of biological change in the Bering, Chukchi, and Beaufort seas.

Results from these observations and experiments will help describe important ecosystem linkages among climate, plankton, fishes, birds and mammals. Continuous monitoring from this region provides critical data to support sustainable management of living resources in the Bering Sea.

The EcoFOCI program is a collaborative research effort by scientists at the Pacific Marine Environmental Lab (PMEL) and Alaska Fisheries Science Center (AFSC) focusing on the unique and economically important high-latitude ecosystems of Alaska.  

May 23, 2018
Engineers and scientists sitting together discussing the first phases of the mission.

Engineers and scientists of the 2016 Saildrone Team discussing the first phases of the summer mission in the Bering Sea.

May 23, 2018

Congratulations to all involved with the 2016 Saildrone missions on receiving the Department of Commence Bronze Award and to Susie Snyder for receiving the NOAA Distinguished Career Award.

NOAA’s PMEL and Alaska Fisheries Science Center were awarded the Bronze Medal for “strengthening NMSF-OAR collaborations through the pioneering use of a Saildrone for next-generation ecosystem surveys in the Bering Sea”.

In 2016, the team successfully conducted the first ecosystem study using two Saildrones.  The mission combined both physical and biological oceanography to seek out new ways to supplement traditional vessel-based research. The Saildrones each traveled almost 3,000 nautical miles in the 101 day mission testing innovative technologies, including a specially developed echo sounder and a modified whale acoustic hydrophone. Collectively, the oceanographic, meteorological, and fisheries measurements provided unique and groundbreaking insights to understanding the economically and culturally important ecosystem in the Bering Sea.

This was a collaborative mission between the NOAA’s Pacific Marine Environmental Lab, NOAA’s Alaska Fisheries Science Center, UW Joint Institute for the Study of the Atmosphere and Ocean, Saildrone Inc., Simrad AS/Kongsberg Maritime, Greeneridge Sciences Inc, and Wildlife Computers. Read more about the 2016 mission here.

The DOC Bronze Award is the highest honor award granted by the Under Secretary of Commerce for Oceans and Atmosphere, which recognizes superior performance characterized by outstanding or significant contributions, which have increased the efficiency and effectiveness of NOAA.

Susie Snyder was also awarded The Distinguished Career Award for her “continued efforts in improving budgetary policies and procedures relating to memorandum of agreements and reimbursable funds throughout 30 years of service to NOAA”. This award honors contributions on a sustained basis — a body of work — rather than a single, defined accomplishment.  This award also recognizes significant accomplishments across all NOAA program areas and functions that have resulted in long- term benefits to the bureau’s mission and strategic goals. 

February 05, 2018
Image of the Willamette River and Fremont Brige in Portland, Oregon

Image of the Willamette River in Portland, OR where the Ocean Sciences Meeting will take place. 

February 05, 2018

More than 50 PMEL scientists, including scientists from NOAA, University of Washington's Joint Institute for the Study of the Ocean and Atmosphere (JISAO), Oregon State University's Cooperative Institute for Marine Resources Studies (CIMRS) and the National Research Council, will present a talk or share a poster on their research at the 2018 Ocean Sciences Meeting in Portland, Oregon February 12-16, 2018. PMEL research groups that will be present at the conference are: Acoustics, Arctic, Earth-Ocean Interactions, EcoFOCI, Engineering, Global Tropical Moored Buoy Array, Innovative Technology for Arctic Exploration, Large Scale Ocean Physics, Ocean Carbon, Ocean Climate Stations, Pacific Western Boundary Currents, Science Data Integration Group, Thermal Modeling and Analysis Project

28 talks will present research on ocean carbon, ocean acidification, ocean observing systems, Arctic research including the Distributed Biological Observatory and Arctic Marine Pulses (AMP), ENSO, MJO, hydrothermal vents, Saildrone research, air-sea interactions, SOCCOM, and ocean mixing. 26 posters will be up during the poster sessions and highlight research in the Arctic, hydrothermal vents, acoustics, methane bubbles and hydrates, Saildrone, Oculus Coastal Glider, ocean carbon, deep ocean temperatures, glider research in the Solomon Sea, and ocean acidification and hyopxia. 

PMEL staff will also be chairing sessions and workshops on:

  • El Nino-Southern Oscillation (ENSO) Diversity, Predictability, and Impacts
  • Western Pacific and Indonesian Sea Circulation and Its Environmental and Climatic Impacts
  • New Platform and Sensor Technologies: Advancing Research, Readiness, and Transitioning for Sustained Ocean Observing of Essential Ocean Variables
  • Methane from the Subsurface Through the Bio-, Hydro-, and Atmosphere: Advances in Natural Hydrate Systems and Methane Seeps in Marine Ecosystems
  • Cascadia Margin methane seep and hydrates to share results and coordinate future work 

The 2018 Ocean Sciences Meeting is co-sponsored by the American Geophysical Union (AGU), the Association for the Sciences of Limnology and Oceanography (ASLO), and The Oceanography Society (TOS). The meeting is an important venue for scientific exchange across broad marine science disciplines. Sessions will include all aspects of oceanography, especially multidisciplinary topics, as well as presentations that reflect new and emerging research on the global ocean and society, including science education, outreach, and public policy