Thea Heimdal et al.* explore the potential impact of adding observations from autonomous platforms to pCO₂ reconstructions in the Southern Ocean. doi.org/10.5194/bg-2... #co2 #ocean #SouthernOcean Galen McKinley, Adrienne Sutton, Amanda Fay, Lucas Gloege

Jamie Shutler et al. (too many to mention) explore the crucial role that satellite observations play in understanding the ocean carbon sink and acidification. doi.org/10.1016/j.ea... #ocean #carbon #satellite

A.P. Joshi et al.* use a suite of machine learning algorithms to produce climatological maps of pCO₂ in the Bay of Bengal. doi.org/10.1038/s415... #ocean #co2 Prasanna Kanti Ghoshal, Kunal Chakraborty & V. V. S. S. Sarma

SOCAT QCers, save the date! On 3rd February 2026 we will hold a SOCAT secondary data quality control (QC) hackathon. This will run for 24 hours starting at 00:00 UTC. Everyone will have the chance to chat and exchange about QC issues while QCing data sets. www.socat.info/hackathon26

Moritz Mathis et al.* explore the mechanisms behind enhanced coastal CO₂ uptake. doi.org/10.1038/s415... #ocean #co2 #coast *Fabrice Lacroix, Stefan Hagemann, David Marcolino Nielsen, Tatiana Ilyina & Corinna Schrum

Excited to announce that we will be hosting the 6th International Symposium on Oceans in a High CO2 World October 12 to 16th in Wellington at the Tākina event center! This conference will bring together marine climate change scientists from multiple disciplines. Save the date!

Yujun Liu, Yijun He and Yating Shao explore the impact of cold season Arctic cyclones on the carbon sink of the marginal sea ice zone. doi.org/10.1016/j.sc... #arctic #co2 #cyclone

Enhui Liao, Wenfang Lu, Liang Xue, and Yan Du attribute an anomalous drop in Indian Ocean CO₂ uptake to large-scale warming and reduced physical transport. doi.org/10.1002/lol2... #IndianOcean #carbon #co2

Frauke Bunsen, Cara Nissen and Judith Hauck assess the impacts of climate change on the global ocean carbon sink doi.org/10.1029/2023... #ocean #carbon

Annika Jersild and Peter Landschützer show how the sources of uncertainty and bias in a neural network based air-sea CO₂ reconstruction vary in different ocean regions. doi.org/10.1029/2023... #ocean #flux #uncertainty

C. Frangoulis et al.* present two years of high-frequency carbonate system observations from the eastern Mediterranean. doi.org/10.3389/fmar... #ocean #mediterranean #carbon Stamataki, Pettas, Michelinakis, King, Giannoudi, Tsiaras, Christodoulaki, Seppälä, Thyssen, Borges, Krasakopoulou

Amanda Fay et al.* present new climatologies of mean ΔfCO and net sea–air CO flux for the global ocean. doi.org/10.5194/essd... #ocean #co2 #flux *David Munro, Galen McKinley, Denis Pierrot, Stewart Sutherland, Colm Sweeney, Rik Wanninkhof

Thi-Tuyet-Trang Chau, Frédéric Chevallier and Marion Gehlen use a set of biological, chemical, and physical predictors to produce global monthly maps of fCO₂ and air-sea CO₂ fluxes beyond the available SOCAT observations. doi.org/10.1029/2023... #ocean #co2 #flux

🌊 In 2023, the ocean carbon sink weakened for the first time in a record-hot year 🌡️🌎 Our new study in Nature Climate Change quantifies this unexpected decline and explains how it came about. 👇 doi.org/10.1038/s415...

Tobias Steinhoff and 40+ co-authors present the results from a two-week intercomparison of 27 pCO₂ instruments (16 models) doi.org/10.1002/lom3... #ocean #co2

Laure Resplandy et al. (too many to fit here) present a global synthesis of coastal fluxes of carbon dioxide, nitrous oxide and methane across the globe. doi.org/10.1029/2023... #ocean #carbon #flux #coast

Some SOCAT services are currently offline due to ongoing IT issues with some servers. The outage is expected to last several days. Main data downloads are unaffected.

Yiming Guo and Mary-Louise Timmermans examine the role of mesoscale processes on global air-sea CO₂ fluxes. doi.org/10.1029/2024... #ocean #co2

Alizée Roobaert et al* discover the factors constraining the coastal air-sea CO₂ flux across the globe. doi.org/10.1029/2023... #ocean #co2 #flux #coast Laure Resplandy, Goulven G. Laruelle, Enhui Liao, Pierre Regnier

Thi-Tuyet-Trang Chau et al.* present CMEMS-LSCE, a 0.25° monthly reconstruction of the surface ocean carbonate system. doi.org/10.5194/essd... #ocean #co2 *Marion Gehlen, Nicolas Metzl, Frédéric Chevallier

🔊We are pleased to announce our SOCOM session 'SOLAS and SOCOM: Understanding interactions and feedbacks between the ocean and atmosphere' was accepted for #OSM26 in Feb 2026. Co-chaired by Dr Thea Heimdal and Dr Amanda Fay. www.agu.org/Ocean-Scienc... #OC4C @lamont.columbia.edu

Judith Hauck and 13 others come together to review the Southern Ocean carbon cycle over 20+ years. doi.org/10.1029/2023... #SouthernOcean #carbon

Elizabeth Ellison, Ali Mashayek and Matthew Mazloff investigate how diapycnal mixing variability can affect air-sea CO₂ fluxes in the Southern Ocean. doi.org/10.1029/2023... #SouthernOcean #co2 #flux

Patrick Duke et al.* estimate the regional marine CO₂ fluxes in the northeast Pacific doi.org/10.5194/bg-2... #ocean #pacific #carbon #co2 *Roberta Hamme, Debby Ianson, Peter Landschützer, Mohamed Ahmed, Neil Swart, Paul Covert

New session confirmed for Ocean Science 2026 in Glasgow: The Southern Ocean Carbon Sink: processes, observations, and change. agu.confex.com/agu/osm26/pr... #OSM26 #SouthernOcean #carbon

Keith Rodgers and too many co-authors to mention present a synthesis of the seasonal variability of the global surface ocean carbon cycle. doi.org/10.1029/2023... #ocean #carbon

Siqi Zhang et al* use LIDAR-based estimates of chlorophyll-a to dive into the diurnal cycle of surface pCO₂ and air-sea CO₂ fluxes. doi.org/10.1093/pnas... Peng Chen, Yongxiang Hu, Zhenhua Zhang, Cédric Jamet, Xiaomei Lu, Davide Dionisi, Delu Pan

📢 65 Million Tonnes of Carbon Stored Annually! 🦐 A #NewStudy reveals for the first time that #zooplankton #migration contributes significantly to #carbon sequestration in the #SouthernOcean - a process overlooked in climate models. Find out more: pml.ac.uk/news/tiny-oc...

Tatsuki Tokoro et al.* analyse the spatiotemporal variations of air-sea CO₂ fluxes in the Kuroshio Region. doi.org/10.1029/2023... #ocean #co2 #flux #Kuroshio *S. Nakaoka, S. Takao, S. Saito, D. Sasano, K. Enyo, M. Ishii, N. Kosugi, Y. Nojiri

SOCAT v2025 is released today! A grand total of 49.6 million surface ocean fCO2 observations from dozens of contributors around the world. www.socat.info/v2025 #ocean #co2

Alison Gray provides an overview of the Southern Ocean carbon cycle doi.org/10.1146/annu... #SouthernOcean #carbon #co2

This official #UNOC3 side event is organised by @icos-ri.eu, #JPIOceans and @oceanfrontier.bsky.social, co-organised by @geomarkiel.bsky.social, #NORCE, @noc.ac.uk, @ifremer.bsky.social and IO-PAN. The event funded by @george-project.bsky.social. 🌊 Read more: www.icos-cp.eu/unoc3

Going to the UN Ocean Decade Conference 2025? Join the side event "From Science to Solutions: Advancing the Ocean Carbon System for Climate Action" to get the latest updates on efforts to improve the global carbon observation network. Full details at www.icos-cp.eu/news-and-eve... #OceanDecade

Tim DeVries and 34 co-authors(!) present the results of the RECCAP2 assessment of the Magnitude, Trends, and Variability of the Global Ocean Carbon Sink From 1985 to 2018. doi.org/10.1029/2023... #ocean #co2 #carbon

Madeleine K. Youngs, Mara A. Freilich and Nicole S. Lovenduski model the influence that sea floor topography can have on air-sea CO₂ fluxes. doi.org/10.1029/2023... #ocean #co2 #flux

Jade Sauvé et al.* describe the role of Ekman transport from the sea ice zone in Southern Ocean outgassing. doi.org/10.1029/2023... #ocean #SeaIce #co2 Alison R. Gray, Channing J. Prend, Seth M. Bushinsky, Stephen C. Riser

Cathryn Ann Wynn-Edwards et al.* evaluate the accuracy of pCO₂ derived from floats in the Southern Ocean using comparisons to descrete samples and measurements from moorings. doi.org/10.3389/fmar... #ocean #co2 #autonomous *E. H. Shadwick, P. Jansen, C. Schallenberg, T. L. Maurer, A. J. Sutton

Kunal Chakraborty et al.* explore the dynamics and drivers of air-sea CO₂ fluxes in the upwelling region of southern Java coast. #ocean #co2 #flux #java doi.org/10.1016/j.ec... A.P. Joshi, Prasanna Kanti Ghoshal, Jayashree Ghosh, Anirban Akhand, Trishneeta Bhattacharya, M.G. Sreeush, Vinu Valsala

Jingrou Lin et al.* examine the effects of the Kuroshio current and typhoons on the sea surface pCO₂ in the Northeastern South China Sea. doi.org/10.3390/rs16... #ChinaSea #ocean #co2 #typhoon #Kuroshio Qingyang Sun, Yupeng Liu, Haijun Ye, Danling Tang, Xiaohao Zhang, Yang Gao

And more on the ocean carbon sink #GCB, Monday morning, room C 11:35–11:55 Jens Müller The ocean carbon sink under record-high sea surface temperatures in 2023/24 11:55–12:05 Alizée Roobaert SOCOMv2: On the strengths and limits of pCO2 interpolations products to estimate the ocean carbon sink

Siqi Zhang et al.* produce 17-year climatological sea surface pCO₂ and air-sea CO₂ fluxes in the Bering Sea. doi.org/10.3389/fmar... #ocean #co2 #flux #BeringSea Yan Bai, Xianqiang He, Zhiting Jiang, Teng Li, Fang Gong, Shujie Yu, Delu Pan

Laurie C. Menviel et al.* explore the effects of shifting and strengthening winds on air-sea CO₂ fluxes in the Southern Ocean. doi.org/10.5194/bg-2... #SouthernOcean #co2 #wind *Paul Spence, Andrew E. Kiss, Matthew A. Chamberlain, Hakase Hayashida, Matthew H. England Darryn Waugh

Sayaka Yasunaka et al.* combine observations and models to create an assessment of the Arctic Ocean CO₂ flux between 1985 and 2018. doi.org/10.1029/2023... #arctic #ocean #co2 *M Manizza, J Terhaar, A Olsen, R Yamaguchi, P Landschützer, E Watanabe, D Carroll, H Adiwira, J Daniel Müller, J Hauck

Helen Michelle de Jesus Affe et al.* calculate the air-sea CO₂ fluxes along the Brazilian coastal margin. doi.org/10.1590/2675... #ocean #co2 #brazil *Diogo Souza Bezerra Rocha, Fernanda Reinhardt Piedras, Gleyci Aparecida Oliveira Moser, Moacyr Cunha de Araujo Filho, Leticia Cotrim da Cunha

Shujie Yu et al.* explore the variability of the air-sea CO₂ flux in the Bohai Sea, Yellow Sea, and East China Sea over 17 years. doi.org/10.1016/j.sc... #ocean #co2 #flux *Zigeng Song, Yan Bai, Xianghui Guo, Xianqiang He, Weidong Zhai, Huade Zhao, Minhan Dai

Fortunat Joos et al.* use the CMIP6 models to determine the anthropogenic influence on increasing seasonal amplitude of sea surface pCO₂. doi.org/10.1029/2023... Angélique Hameau, Thomas L. Frölicher and David B. Stephenson #ocean #co2

The final peer-reviewed version of the Global Carbon Budget 2024 is now published: essd.copernicus.org/articles/17/... Only slight updates compared to the submitted version last November, mainly related to updated data. Get a summary of the results here: bsky.app/profile/glen...

Nathalie Lefèvre, Doris Veleda and Susan E. Hartman look at decadal trends in surface fCO₂ and pH in the coastal upwelling off the northwest African coast. doi.org/10.1016/j.ds... #ocean #co2 #OceanAcidification

Ylva Ericson et al.* track a rapid increase in surface ocean fCO₂ in the Barents Sea and Nansen Basin. doi.org/10.1016/j.po... Ylva Ericson, Agneta Fransson, Melissa Chierici, Elizabeth M. Jones, Ingunn Skjelvan, Abdirahman Omar, Are Olsen, Meike Becker

Ahra Mo et al.* measure the seasonal variability of the carbonate system off the Western Antarctic Peninsula. doi.org/10.1016/j.ma... #ocean #co2 #antarctica *Keyhong Park, Eun Jin Yang, Jisoo Park, Tae-Wook Kim