We would like to let you know about two surface ocean CO₂ products which have recently been updated and are available online.

An updated Jena CarboScope ocean CO₂ flux product can be accessed from the website at https://www.bgc-jena.mpg.de/CarboScope/?ID=oc. CarboScope provides the temporally and spatially resolved estimates of the global sea-air CO₂ flux based on the SOCAT data set of pCO₂ observations, as presented in Rödenbeck et al., 2013. The product comprises seasonal, interannual, and day-to-day variations. This year's update involves the use of SOCATv2020 data and the additional year 2019, with further changes described in detail below.  

The latest update of the mapped surface ocean pCO₂ product (SOM-FFN) can be accessed from the NCEI OCADS website at https://www.nodc.noaa.gov/ocads/oceans/SPCO2_1982_present_ETH_SOM_FFN.html. The latest update of the product consists of monthly maps from January 1982 through December 2019 using the latest release of the SOCAT data set (SOCATv2020, Bakker et al 2016, Sabine et al 2013). In addition to previous versions of this product, air-sea fluxes are now calculated using the ERA 5 reanalysis winds (Copernicus Climate Change Service, 2017). The product will now further be updated annually.  

We are pleased to inform you that the Global Carbon Project (GCP) has published an updated and expanded Global Methane Budget. For the decade of 2008-2017, global emissions of methane are 576 (550-594) Tg CH₄ per year as estimated from atmospheric inversions (top-down approach). The global CH₄ sink is 556 Tg (501-574) CH₄ per year. The source–sink mismatch reflects, and is consistent with, the observed average imbalance in the atmosphere of 13 Tg (0-49) CH₄ per year (the CH₄ growth rate). The sum of all sources as estimated from inventories and modeling (bottom-up approaches) is 737 (594-880) Tg CH₄, significantly higher than estimated from the top-down approach and reflecting the compounded uncertainties of the multiple CH₄ sources.

The effort was supported by 91 contributors and 69 research organizations. Please find papers, data and additional resources at: https://www.globalcarbonproject.org/methanebudget 

On behalf of the GLODAP Reference Group, and hundreds of seagoing oceanographers that tirelessly have collected data all over the ocean, we are happy to announce the publication of GLODAPv2.2020.

The Global Ocean Data Analysis Project (GLODAP) data product provides access to quality controlled surface to bottom ocean biogeochemical data, with an emphasis on seawater inorganic carbon. GLODAPv2.2020 is an update of the previous version, with 106 additional cruises, extension of time coverage until 2019, and the inclusion of available discrete fCO₂ values in the merged product files. GLODAPv2.2020 includes measurements from more than 1.2 million water samples from the global ocean collected on 946 cruises. The data for the 12 core variables have undergone extensive quality control, especially systematic evaluation of bias. The data are available in two formats: (i) as submitted by the data originator but updated to WOCE exchange format and (ii) as a merged data product with adjustments applied to minimize bias. The original data, their documentation and doi codes are available at the Ocean Carbon Data System (OCADS) of NOAA NCEI. This site also provides access to the merged data product, which is provided as a single global file and as four regional ones. For a more detailed summary of the product see the attached poster. 

The continuous work to regularly update and refine GLODAP is a priority for IOCCP, and we are happy to support this effort. 

On behalf more than 100 contributing scientists worldwide, we proudly announce the release of 2020 version of the Surface Ocean CO₂ Atlas (SOCAT, www.socat.info) which is a synthesis activity with annual public releases prepared by international marine carbon scientists. SOCAT version 2020 contains 28.2 million in situ surface ocean fCO₂ (fugacity of CO₂) measurements for the global ocean and coastal seas with an accuracy < 5 μatm, while a further 2.3 million fCO₂ values with an accuracy of 5 to 10 μatm are made available separately. SOCAT documents the increase in surface ocean CO₂ (carbon dioxide), a critical measure as the oceans are taking up one quarter of the global CO₂ emissions from human activity.

The SOCAT community-led synthesis product is a key step in the value chain based on in situ inorganic carbon measurements of the oceans, which provides policy makers with essential information on ocean CO₂ uptake in climate negotiations. The global need for accurate knowledge of ocean CO₂ uptake and its variation makes sustained funding for in situ surface ocean CO₂ observations imperative. The annual SOCAT release is a Voluntary Commitment for SDG 14.3 (#OceanAction20464) and contributes to the UN Decade of Ocean Science for Sustainable Development. The poster handout has further details on 2020 version key features, findings and other information, including timeline for preparing the 2021 version.

We would like to let you know that the call for applications for an Early-Career Scientist (ECS) to join the SCOR Executive Committee is open. The ECS in the SCOR EC will help reaching out to the broader early-career community and get it involved into SCOR activities. Term of appointment is for 2 years. More information about the position and application instructions can be found here.

Deadline for submission of applications: 17 July 2020. Please email the completed application form and requested documents to the SCOR Secretariat (This email address is being protected from spambots. You need JavaScript enabled to view it.).

“Improving and Integrating European Ocean Observing and Forecasting Systems for Sustainable Use of the Oceans (EuroSea)” is a European Union Horizon 2020 Innovation Action running from November 2019 to December 2023. Through its ambitious vision and objectives EuroSea will, among other things, strengthen European and global coordination of marine biogeochemistry observations. 

EuroSea generously supports the IOCCP Project Officer position for the time frame 2020-2022, and enables a number of key activities which help fulfil IOCCP Terms of Reference as well as implement relevant recommendations from OceanObs’19 Conference and Community White Papers. The activities are related to: (i) increasing the readiness level of delayed mode biogeochemical data products, (ii) enhancing ocean carbon flux observations (and estimates of their economical value), and (ii) supporting global coordination of marine debris observations.

We would like to let you know that the SCOR Executive Committee invites SCOR National Committees, individuals and interested organisations to assist in the review of SCOR working group proposals. Ten working group proposals were submitted to the SCOR Secretariat in response to the 2020 Call. These are available on the SCOR Web site. Instructions to review the proposals can be found here. 

Please send your comments on these proposals to SCOR Executive Director, Patricia Miloslavich, by This email address is being protected from spambots. You need JavaScript enabled to view it. if possible, before 31^st August 2020, and do not hesitate to contact with any questions about the review process.

We would like to let you know that a call for abstracts is open for the 9^th International EuroGOOS Conference "Advances in Operational Oceanography: Expanding Europe's ocean observing and forecasting capacity." The conference will take place in Brest, France, from 14 to 15 October 2020. The event will be hosted by SeaTech Week. The conference provides a forum for a broad range of implementers and users of operational oceanography services, including marine scientists and technologists, private companies, and policymakers. This year there is a number of themes and topics related to marine biogeochemistry which our community might find interesting. 

Deadline for submitting abstracts is 31 May 2020. For more information on the Conference format, provisional programme and details of abstract submission process, please see the Conference website at https://eurogoos.ifremer.fr

We would like to let you know that the first meeting of the US Ocean Carbon & Biogeochemistry (OCB) Working Group on "Filling the gaps in observation-based estimates of air–sea carbon fluxes" will take place this week, May 5-6, 2020 via Webex. The first day of the meeting (May 5) is open to everyone and will include presentations on the current state of understanding of the global ocean carbon sink. If you're interested, please register in advance HERE. After you submit your registration, Webex will send you an invitation with connection information, including a phone number if you prefer telephone audio. You can visit the working group website to view the meeting agenda. The presentations on May 5 will be recorded and posted on the OCB YouTube channel for viewing later. All webinar attendees will be muted, but you can type in questions and participate in discussion via the Q&A function as time allows at the end of each block of talks.

This working group was assembled in 2019 to assess critical uncertainties in existing observation-based air-sea carbon fluxes, determine how best to integrate observation-based open-ocean and coastal-ocean CO₂ air–sea fluxes, and quantify uncertainties in the natural (pre-industrial) outgassing of CO₂. These efforts will lead to better constraints on the contemporary ocean carbon sink and its variability. The results of this OCB Working Group will assist the global carbon community in understanding the state of the global carbon cycle so as to contribute to international efforts to address climate change.

We would like to let you know that a new combined surface pCO₂ climatology, produced by Peter Landschützer (Max Planck Institute for Meteorology, Hamburg, Germany) and co-authors, is now available and archived at NOAA's Ocean Carbon Data System (OCADS) Project, National Centers for Environmental Information (NCEI). The data product was created by merging 2 published and publicly available pCO₂ datasets covering the open ocean (Landschützer et. al 2016) and the coastal ocean (Laruelle et. al 2017). Both fields were initially created using a 2-step neural network technique. Full documentation with metadata and dataset download links can be obtained from the product website: https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0209633. A manuscript describing the method and the dataset was submitted to Earth System Science Data journal.

This product is free to be used. Please cite this data set as:

Landschützer, Peter; Laruelle, Goulven; Roobaert, Alizee; Regnier, Pierre (2020). A combined global ocean pCO₂ climatology combining open ocean and coastal areas (NCEI Accession 0209633). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. doi: https://doi.org/10.25921/qb25-f418. Accessed [2020-04-08].