Ocean Acidification Research Center

Welcome to PICES-2025 Opening Day!

Wishing everyone an enjoyable and productive meeting

Scientists from the United States at the 2025 annual PICES meeting in Yokohama, Japan.

#PICES2025 🧪🌊🦑 Day 2️⃣

The 🇺🇸 delegates met and we attended many interesting sessions including S02: Changing Ecosystem Structure Under Global Climate Change: Monitoring, Detecting, Modeling, and Socio-Ecological Impacts. @picesmarinesci.bsky.social @icesmarine.bsky.social 🇨🇦🇨🇳🇯🇵🇰🇷🇷🇺🇺🇸

📸R.Roday

The North Pacific Marine Science Organization meeting is now open! The 2025 theme is Innovative Approaches and Applications to Foster Resilience in North Pacific Ecosystems.

#PICES2025 🧪🌊🦑 Day 1️⃣

A great first day of the North Pacific Marine Science Organization meeting in Yokohama! @picesmarinesci.bsky.social @icesmarine.bsky.social

Several distinguished guests opened the meeting for delegates and researchers from 6 participating nations. 🇨🇦🇨🇳🇰🇷🇯🇵🇷🇺🇺🇸

📸 H.Killeen

Are your students here at #PICES2025? @picesmarinesci.bsky.social

@icesmarine.bsky.social @picesmarinesci.bsky.social

#PICES2025 🧪🌊🦑🐻‍❄️

We are beginning a data rescue project for the Pacific #Arctic Region. Once it is archived, it will be at the Ocean Carbon and Acidification Data System. #OCADS #NOAA 🇺🇸

www.ncei.noaa.gov/products/oce...

Atlantic-origin water extension into the Pacific Arctic induced an anomalous biogeochemical event - Nature Communications The authors show that the appearance of anomalously low oxygen and acidified water on the Chukchi Plateau, a high-seas fishable area of the western Arctic Ocean, is associated with a change in basin-s...

#PICES2025 🧪🌊🦑🐻‍❄️

Anomalous water (low oxygen and acidified) were observed on the #Chukchi Plateau. #OceanAcidification 🇯🇵

www.nature.com/articles/s41...

Nearly four million individuals live in the Arctic: Indigenous Peoples, recent settlers, hunters, herders and urban residents. About 10 percent of this population is Indigenous. For collaborative projects such as this discussions on ownership and sharing are imperative. Disclaimer and acknowledgements linked to the calendar have been compiled to ensure the Traditional knowledge is protected. The work is currently being compiled into a scientific journal article and a community book. The calendar itself can be cited as: Patrick Farnole, Allen Pogotak, Koral Memogana, Mark Stoller, Nadja Steiner. Ulukhaktok Cultural Calendar. Olokhaktomiut Hunters & Trappers Committee, 2024.

#PICES2025 🧪🌊🦑🐻‍❄️

A traditional knowledge calendar co-developed with the community of Ulukhaktok. 🇨🇦

www.crices-h2020.eu/news/a-tradi...

#PICES2025 🧪🌊🦑🐻‍❄️

Hydrochemical Atlas of the #Arctic Ocean, 1948-2000, dissolved oxygen, phosphate, silicate, pH, total alkalinity, nitrite and nitrate. #OceanAcidification

www.ncei.noaa.gov/archive/acce...

As the Arctic warms faster than any other region on Earth, understanding its fragile ecosystems has never been more urgent. This year marks the tenth anniversary of the Working Group on the Integrated Ecosystem Assessment of the Central Arctic Ocean (WGICA), a broad international collaboration that brings together scientists, knowledge, and results from working groups of the North Atlantic (ICES), North Pacific (PICES), and the Arctic Council (PAME, CAFF, and AMAP). WGICA's mission is to study and understand the changing Central Arctic Ocean (CAO) ecosystem, from the Pacific Bering Strait, across the Central Arctic Ocean, and to the Atlantic Fram Strait. Meeting this week at the PICES Annual Meeting in Yokohama, Japan, WGICA celebrates a decade of collaboration with the release of two new publications: An updated Central Arctic Ocean Ecosystem Overview, and ICES Cooperative Research Report No. 361 – Ecosystem assessment of the Central Arctic Ocean, Part 2: Human activities, pressures, and vulnerability of the ecosystem.

#PICES2025 🧪🌊🦑🐻‍❄️
ICES, PICES, and PAME mark 10 years of collaboration with the Working Group on the Integrated Ecosystem Assessment of the Central Arctic Ocean. @icesmarine.bsky.social #OceanAcidification

www.ices.dk/news-and-eve...

Figure 3.5 | Schematic summary of key drivers that are causing, or are projected to cause, direct effects on Arctic marine ecosystems (Section 3.2.1.2). Effects presented here are described in the main text (Sections 3.2.3.1; 3.2.4.1.1; 3.2.4.2; 3.2.4.3) with associated confidence levels and citations. For mixed effects, no confidence level is given (see main text for details on how multiple drivers cause interacting positive and negative effects). Projected effects are conceptual representations based on high emission scenarios (Section 3.2.1.2). The cross-sectional view of the Arctic ecosystem shows the association of key functional groups (marine mammals, birds, fish, zooplankton, phytoplankton and benthic assemblages) with Arctic marine habitats. Species depicted in the fishing net are not a comprehensive depiction of all target species.

@ipcc.bsky.social 2022 Chapter 3️⃣: Polar Regions. 🌊

Don't miss the section on #OceanAcidification 😉

www.ipcc.ch/site/assets/...

#PICES2025 🧪🌊🦑🇯🇵 an Arctic Ocean resources 🧵

We started the week off at the #Arctic workshop! 🙌

Present and Future Pressures and Human Activities in the Arctic Ocean and Pacific Gateways. Co-sponsored with @icesmarine.bsky.social

meetings.pices.int/meetings/ann...

Looking forward to the workshop on the #Arctic at #PICES2025 in Yokohama on Sunday!

Looking forward to seeing these authors at #PICES2025 this week.

Ohayō. We are on our way!
🧪🌊🦑✈️

Scientists around the North Pacific 北太平洋 are traveling to Yokohama!
🇨🇦🇨🇳🇰🇷🇯🇵🇷🇺🇺🇸 #PICES2025

2025 North Pacific Marine Science Organization meeting poster

#PICES2025 🇯🇵🌊

meetings.pices.int/meetings/ann...

2025 North Pacific Marine Science Organization meeting poster

#PICES2025 🌊🇯🇵

meetings.pices.int/meetings/ann...

#OceanAcidification is accessible. 🧪🌊🦑

We follow #FAIR data principles to make our observations Findable, Accessible, Interoperable, and Reusable.

www.ncei.noaa.gov/products/oce...

Cover for the Guide to Best Practices for Ocean CO2 Measurements. A PICES Special Publication.

#OceanAcidification is mesurable. 🧪🌊🦑

We follow community best practices to make climate quality observations. #PICES

repository.oceanbestpractices.org/handle/11329...

#OceanAcidification is justified. 🧪🌊🦑

Marine carbonate chemistry changes affect marine species.

aoan.aoos.org/impacts/spec...

Oceanographic research stations visited in Alaska's large marine ecosystems overlaid on a Google Earth map.

#OceanAcidification is scalable in space and time. 🧪🌊🦑

We monitor the marine carbonate system to detect ocean acidification in Alaska's large marine ecosystems by visiting repeat, long-term stations.

www.uaf.edu/cfos/researc...

🗺️ by G.Earth

United Nations Ocean Decade Sustainable Development Goal logo, Life Below Water.

#OceanAcidification is significant. 🧪🌊🦑

Research is robust and integrated into Intergovernmental Panel on Climate Change #IPCC assessments and the United Nations Ocean Decade @unoceandecade.bsky.social

oceanacidificationcookbook.pubpub.org/pub/et22hqg0...

CO2 Time series in the North Pacific. Data from Mauna Loa (air) and ALOHA (seawater).

#OceanAcidification is verified. 🧪🌊🦑

The ocean takes up human released CO₂ to the atmosphere, resulting in an increase in acidity and a decrease in available carbonate ions. @keelingcurve.bsky.social

Overview of the six science-based quality criteria identified by the Global Ocean Observing System (GOOS) cross-panel task team on ocean indicators, using the climate and biodiversity indicator criteria as a starting point. Each of the six criteria must be met for the establishment of an ocean indicator.

A new Marine Policy article defines #OceanAcidification as a global ocean indicator. 🧪🌊🦑

Criteria for indicators: Verified, Significant, Scalable, Justified, Measurable, and Accessible.

doi.org/10.1016/j.ma...

Elementary kids learn about chemistry and ocean acidification in Southeast Alaska - Alaska Ocean Acidification Network This spring and summer, kids in Sitka, Petersburg and Angoon got hands-on experience learning about ocean monitoring, chemistry and stewardship through a collaborative program led by UAF and Sitka Coo...

4-H pH is an #OceanAcidification education program for youth. 🧪🌊🦑🍀 @uafextension.bsky.social

aoan.aoos.org/elementary-k...

We had a lot of fun preparing for a future Infiniscope Tour of our lab as part of our 4-H pH ocean education project. 🧪🌊🦑🍀 @alaskagina.bsky.social

Check out other tours for immersive virtual field trips for learners of all ages. #NASA #ArizonaStateUniversity

infiniscope.org/page/tour-it

This could be a good article for chemical oceanography classes, but it is not open access... @natchem.nature.com

"The buffering capacity of the world’s oceans has helped offset the effects of CO₂ emissions on climate; however, it is not without cost." #OceanAcidification 🧪🌊🦑

Poster for the 2025 annual meeting of the North Pacific Marine Science Organization (PICES) held in Yokohama, Japan. The meeting theme is: Innovative Approaches and Applications to Foster Resilience in North Pacific Ecosystems.

Countdown to #PICES2025 in Yokohama! 🧪🌊🦑
PICES = North Pacific Marine Science Organization
🇨🇦🇨🇳🇯🇵🇰🇷🇷🇺🇺🇸

The meeting theme is: Innovative Approaches and Applications to Foster Resilience in North Pacific Ecosystems.

Screenshot of the Bloomberg article series highlighting carbon dioxide research in permafrost, forests, and oceans. Oceans store orders of magnitude more carbon than other sinks.

Schematic representation of the overall perturbation of the global carbon cycle caused by anthropogenic activities, averaged globally for the decade 2014–2023. See legend for the corresponding arrows. Flux estimates and their 1 standard deviation uncertainty are as reported in Table 7. The CDR estimate is for the year 2023 only. The uncertainty in the atmospheric CO2 growth rate is very small (±0.02 GtC yr−1) and is neglected for the figure. The anthropogenic perturbation occurs on top of an active carbon cycle, with fluxes and stocks represented in the background and taken from Canadell et al. (2021) for all numbers, except for the carbon stocks in coasts, which is from a literature review of coastal marine sediments (Price and Warren, 2016). Fluxes are in gigatonnes of carbon per year (GtC yr−1) and reservoirs in gigatonnes of carbon (GtC). This figure was produced by Nigel Hawtin.

Looking forward to part 3: Oceans! 🌊

Data highlighted in the article is from the 2024 Global Carbon Budget led by @pfriedling.bsky.social.

doi.org/10.5194/essd...

Check out the new paper by PNNL researchers including @jessicancross.bsky.social. 🧪🌊🦑

They assessed seawater pH and CO₂ sensors for #MCDR MRV including Sunburst, Seabird, Idronaut, YSI, Turner, and #MAPCO2. 🤖📈