Fig. 8: Instantaneous CO2 fluxes, driven by the gas transfer velocity (blue dots, scale on left axis), and the cumulative flux over the entire year of the MOSAiC drift (red line, scale on right axis).

Brice Loose et al.* report their findings of air-sea gas exchanges observed during the MOSAIC Arctic mission

doi.org/10.1525/elem...

#ocean #arctic #mosaic

Ilker Fer, Adam Ulfsbo, Melissa Chierici, Elise S. Droste, Daiki Nomura, Agneta Fransson, Mario Hoppema, Sinhué Torres-Valdés

Zheng-Xin Hu et al.* examine the variability of air-sea CO₂ fluxes and acidifcation in the Qingdao coastal waters.

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

Tie Li, Tian-Tian Ge, Jing-Wen Hu, Ping-Wang, Chun-Ying Liu, Gui-Peng Yang

P. Gooya, N. C. Swart, and P. Landschützer explore the predictive skills of the statistical methods used to gap-fill surface ocean CO₂ measurements.

doi.org/10.1029/2023...

#ocean #co2

Observed Regional Impacts of Marine Heatwaves on Sea‐Air CO2 Exchange Marine heatwaves substantially affect local sea-air CO2 fluxes via oceanic pCO2 changes During MHWs, tropics decrease outgassing from lower dissolved inorganic carbon, while mid latitudes weaken ...

Catherine Li, et al.* investigate the impact of marine heat waves on air-sea CO₂ fluxes.

doi.org/10.1029/2024...

#ocean #co2 #flux #MarineHeatWave

* Friedrich Burger, Christoph Raible, Thomas Frölicher

Fig 2: SST in October 2019 (left column) and in December 2019 (right column) obtained from optimally interpolated (OI) SST products (microwave and infrared radiometers, spatial resolution = 9 km). The top and middle rows show monthly and climatological averages, respectively, and the bottom row shows anomalies from the climatology. The white line indicates 80°E, where the ship-based observations were made.

A. Murata et al.* assess the impact of a positive Indian Ocean Dipole on the surface ocean CO₂ system in 2019.

doi.org/10.1029/2024...

#ocean #flux #co2 #IndianOcean

*S. Kouketsu, K. Sasaoka, K. Arulananthan

Shuo Li et al.* examine the possible effects of the sea state on the gas transfer parameterisation of air-sea CO₂ fluxes.

doi.org/10.1016/j.oc...

#ocean #co2 #flux

Alexander V. Babanin, Qingxiang Liu, Changlong Guan

Group picture of approximately 20 TRICUSO consortium representatives smiling at the camera at Ocean Sciences Meeting 2026 in Glasgow.

Two town halls, a co-chaired session titled 𝘛𝘩𝘦 #𝘚𝘰𝘶𝘵𝘩𝘦𝘳𝘯𝘖𝘤𝘦𝘢𝘯 #𝘊𝘢𝘳𝘣𝘰𝘯𝘚𝘪𝘯𝘬: 𝘱𝘳𝘰𝘤𝘦𝘴𝘴𝘦𝘴, 𝘰𝘣𝘴𝘦𝘳𝘷𝘢𝘵𝘪𝘰𝘯𝘴, 𝘢𝘯𝘥 𝘤𝘩𝘢𝘯𝘨𝘦 and a poster talk.

Read all about how TRICUSO made a healthy splash in the heavily populated waters of #OSM26 in #Glasgow
👉
tricuso.eu/news/tricuso...

@horizoneu.bsky.social #REA

Figure 1: (a) Map of biomes defined by Fay and McKinley (2014). (b) Measured pCO2 distributions in SOCAT v2023 (Bakker et al., 2016) for 2006–2021. (c) The mean winter (May, June, and July) Chl-a concentration from Moderate Resolution Imaging Spectroradiometer (2006–2021) (OBPG, 2018). (d) The mean winter (May, June, and July) bbp derived through linear interpolation (2006–2021).

Hao Huang et al.* see how the CALIPSO satellite observations can be used as a phytoplankton biomass proxy, and how they can be integrated into air-sea CO₂ flux estimates in the Southern Ocean.

doi.org/10.1029/2024...

*Ke Zhang, Zhaoru Zhang, Walker Smith Jr., Jianfeng He, Na Liu, Chengfeng Le

Fig. 3: a–c from the ensemble mean of six pCO2 products and nine CMIP6 ESMs for the present climate (blue line) and the end of the century (2080–2099, orange). d–f Net changes in the projected future climate (note the change of scale). The first, second, and third columns depict the austral summer (DJF), austral winter (JJA) averages, and the annual mean, respectively. The vertical gray lines denote the frontal positions, the solid line the Polar Front, and dotted the Subtropical Front. The shading in all figures shows the uncertainty; inter-model one standard deviation.

Precious Mongwe et al* project geographical and seasonal shifts of the Southern Ocean carbon sink under high emissions.

doi.org/10.1038/s432...

#SouthernOcean #carbon #sink

Luke Gregor, Jerry Tjiputra, Judith Hauck, Takamitsu Ito, Christopher Danek, Marcello Vichi, Sandy Thomalla & Pedro Monteiro

Figure 4: The air-sea CO₂ flux by months of year. Color scale is blue to yellow from past to present, 2004 to 2021. The orange solid line indicates the average value for each month. Negative values indicate ocean uptake of CO₂.

Xiang Yang et al.* look at drivers of air-sea CO₂ fluxes in the Subantarctic zone south of Australia.

doi.org/10.1029/2023...

#ocean #flux #co2 #SouthernOcean

*Cathryn A. Wynn-Edwards, Peter G. Strutton, Elizabeth H. Shadwick

This offer is good for anyone at #OSM26 next week. Message me.

New paper! The biogeochemical transport by the Gulf Stream
Read it here: www.nature.com/articles/s43...

This paper explores the role of the Gulf Stream in the carbon cycle.

#HorizonEurope #EUMissionOcean #OceanCarbon #SciencePaper

Invitation for the SOCONET Town Hall at the Ocean Sciences Meeting in Glasgow, Scotland. The Town Hall is taking place on Monday 23 February 2026, from 12:45 to 13:45 (GMT) at Hall 3, The Sound.

🌊 Coming up at #OSM26

#TownHall TH13J: The Surface Ocean CO₂ Reference Observing Network ( #SOCONET): Current Status and Future Prospects

💡More information & registration: agu.confex.com/agu/osm26/me...

@horizoneu.bsky.social #REA

Figure 2(a) Time series of sea surface fCO2 observations (µatm) southwest of Kerguelen Islands in 1985–2021 (inset map shows the location of observations selected around station OISO-KERFIX at 50°40′ S–68°25′ E). The color dots correspond to five periods of the year (January–February, March–April, July–August, October, and December), and triangles show the average for each month. The monthly sea surface fCO2 from the FFNN model is presented for the period 1985–2020 (grey line), and the atmospheric fCO2 is represented by the red line. In March 1985 there was no underway fCO2 observation, and the triangle corresponds to fCO2 calculated with AT and CT measured in the mixed layer.

Nicolas Metzl et al.*, examine the carbonate system from a near-40-year time series in the southern Indian Ocean.

doi.org/10.5194/os-2...

#ocean #carbon #IndianOcean

*Claire Lo Monaco, Coraline Leseurre, Céline Ridame, Gilles Reverdin, Thi Tuyet Trang Chau, Frédéric Chevallier, and Marion Gehlen

Lisandro A. Arbilla et al.* explore the role that marine fronts play in creating zones of differing air-sea CO₂ flux characteristics around the Drake Passage.

doi.org/10.1016/j.po...

#ocean #co2 #flux

Laura A. Ruiz-Etcheverry, Celeste López-Abbate, Lucía C. Kahl

Fig. 3. Contribution of carbon sink research productivity in global hot weather.

Hua Li et al.* perform a literature analysis to assess the state of research on the impact of high temperature heat waves on ocean carbon sinks.

doi.org/10.1016/j.se...

*Jing Lu, Helong Tong, Yijun Liu

An Assessment of CO2 Storage and Sea‐Air Fluxes for the Atlantic Ocean and Mediterranean Sea Between 1985 and 2018 From 1985 to 2018, pCO2 products suggest a lower mean CO2 uptake (−0.36 ± 0.06 PgC yr−1) than ocean models (−0.47 ± 0.15 PgC yr−1) Since 2000, the CO2 uptake is increasing twice as fast in the pC...

Fiz Pérez et al.* assess the air-sea CO₂ flux in the Atlantic and Mediterranean over three decades.

doi.org/10.1029/2023...

*Becker, Goris, Gehlen, López-Mozos, Tjiputra, Olsen, Müller, Huertas, Chau, Cainzos, Velo, Benard, Hauck, Gruber, Wanninkhof

A new study by GEOMAR and Plymouth Marine Laboratory shows that the exchange of gases between air and sea is not symmetric, and that the global ocean has taken up around 15 per cent more CO2 than suggested by conventional estimates.
🔗 www.geomar.de/en/news/arti...
📸 Ming-Xi Yang

NSF seeks public input on its Fiscal Year (FY) 2026–2030 NSF Strategic Plan

Only two weeks to provide input on NSF Strategic Plan - comments due Jan. 27! www.nsf.gov/od/updates/n...

Pre-registration for the SOCAT Secondary Quality Control Hackathon is now open!

For details: www.socat.info/hackathon26

Graphic from the new paper: "improved air-sea CO2 flux estimates from sailboat measurements"

New #paper by TRICUSO’s Jacqueline Behncke @geomarkiel.bsky.social & Peter Landschützer @vliz.be demonstrates how integrating #sailboat #data improves estimates of #ocean #carbon uptake

Read the full article, published by @science.org: www.science.org/doi/10.1126/...

@horizoneu.bsky.social #REA

The Importance of Contemporaneous Wind and pCO2 Measurements for Regional Air‐Sea CO2 Flux Estimates Compared to Saildrone wind speeds, the ERA-5 reanalysis appears to underestimate the highest wind speed events (>10 m s−1) Co-located ocean pCO2 and wind speed observations results in larger upta...

S. Nickford, J. B. Palter and L. Mu assess the importance of in situ wind measurements for estimating air-sea CO₂ fluxes

doi.org/10.1029/2023...

#ocean #wind #co2 #flux

Leticia Barbero and Denis Pierrot, supported by the NOAA Global Ocean Monitoring and Observing program, are holding a workshop on taking pCO₂ General Oceanics from ships on 10-12 March 2026 in Miami, Florida.

Full details: socat.info/wp-content/u...

Fig 1: (A) Schematic of the box model. Boundaries of the box model are selected Mθe surfaces at 15, 30, 45, and 60 Mθe values (1016 kg), which are shown as zonal and 2009 to 2018 averages. (B) Selected near-surface Mθe contours as 2009 to 2018 averages. Mθe is computed from 3-h MERRA-2 reanalysis. These Mθe bands are nearly fixed with season. Red triangles show the location of surface stations that are used in the Carbon Tracker 2019b 3D (three-dimensional) CO2 inversion product.

Yuming Jin et al.* use atmospheric observations and an atmospheric box model to constrain the Southern Ocean carbon sink

doi.org/10.1073/pnas...

#ocean #co2 #SouthenOcean

Ralph Keeling, Britton Stephens, Matthew Long, Prabir Patra, Christian Rödenbeck, Eric Morgan, Eric Kort, and Colm Sweeney

Figure 5Panel (a) shows the spatial distribution of the annual average air–sea CO2 exchange (FCO2, in mol C m−2 yr−1) and (b) seasonal FCO2 variability (expressed as the root mean square (RMS, in mol C m−2 yr−1)) calculated with the reconstructed coastal pCO2-product (ULB–SOM–FFN–coastalv2, 1982–2020 climatology). The latitudinal mean FCO2 distribution (red line) and its associated longitudinal variability (red shading) is presented in panel (c). This latter is compared with the FCO2 calculated with the ULB–SOM–FFN–coastalv1 pCO2-product (in green; Roobaert et al., 2019) and against a synthesis of 214 regional FCO2 estimations (blue dots; Dai et al., 2022). For consistency in the comparison in (c) we applied the same coastal delimitation as in Dai et al. (2022) and Roobaert et al. (2019) to the FCO2 ULB–SOM–FFN–coastalv2 product, i.e., we used the shelf break as the outer limit of the coastal domain (narrow coastal ocean). Panel (c) is also reconstructed based on an overlap period between the three products (1998–2020; except FCO2 ULB–SOM–FFN–coastalv1 which is limited to the 1998–2015 period).

Alizée Roobaert et al.* create a high resolution data product of coastal surface pCO₂.

doi.org/10.5194/essd...

#coast #ocean #co2

*Pierre Regnier, Peter Landschützer, Goulven G. Laruelle

Air–Sea CO2 Exchange Over the Mediterranean Sea, the Red Sea and the Arabian Sea - International Journal of Environmental Research Anthropogenic greenhouse gas emissions are reshaping oceanic CO2 uptake patterns. This study focuses on the crucial regions of the Arabian Sea, Red Sea, and Mediterranean Sea which are highly affected...

Mona Zarghamipour, Hossein Malakooti and Mohammad Hadi Bordbar explore the air-sea CO₂ exchange over the Mediterranean, Red and Arabian Seas.

doi.org/10.1007/s417...

#ocean #co2 #flux

Vacancy at Flanders Marine Institute (VLIZ): SOCAT Data Engineer. Apply now! Deadline: 4 January 2026.

📢 #Vacancy Alert!

@vliz.be will fund a 2-year #SOCAT #DataEngineer!

This #JobOpportunity the connection of VLIZ with the @icos-ri.eu #Carbon Portal, to secure the continuation of SOCAT.

⌛️Deadline: 4 January 2026
💡More info via the link: vliz.be/en/jobs/vliz...

@horizoneu.bsky.social #REA

New study by Dong et al. shows that #bubble-mediated #CO2 transfer favors invasion based on field evidence. They introduce an asymmetric #BulkFlux equation, suggesting that the global #ocean may absorb ~15% more #CO2 than previously estimated.
www.nature.com/articles/s41...

La missione ATL2MED, condotta con strumentazioni all’avanguardia, come i Saildrone, ha fornito dettagli sulla variabilità dello scambio di CO2 tra aria e mare nell’Atlantico orientale e nel Mediterraneo.
www.ogs.it/it/notizie/d...

VLIZ recruits: SOCAT Data Engineer

JOB ALERT!

@vliz.be is recruiting a Data Engineer to work in a wide-ranging role to help coordinate global SOCAT activities.

Full details: vliz.be/en/jobs/vliz...