We would like to share with you that IAPSO has selected three Best Practice Study Groups, one of which focuses on ‘Calibrating Measurements of Total Dissolved Inorganic Carbon in Seawater’. The main objectives of this Best Practice Study Group are to address the calibration strategies for commonly used instrumentation to measure total dissolved inorganic carbon (DIC) in seawater, write clear and detailed standard operating procedures (SOPs), assess the reliability and consistency among calibration methods, and suggest technological and commercial solutions to facilitate their implementation.

We would like to encourage you to consider submitting an abstract for the 1^st Stakeholder Meeting of the International Committee for Weights and Measures (CIPM) Sectorial Task Group on Climate Change and Environment (STG-CENV) to be held on 16-18 September 2024, in Sèvres, France.

We would like to let you know that the POGO-SCOR Fellowship programme for 2024 is now open for applications. This programme is jointly funded by the Partnership for Observation of the Global Ocean (POGO) and the Scientific Committee on Oceanic Research (SCOR). The deadline for applications is 30 April 2024 (23:59 CET).

We are very excited to inform you that the first edition of a global database of dissolved organic matter (CoastDOM v1) compiling previously published and unpublished concentration measurements in coastal waters is available from https://doi.org/10.1594/PANGAEA.964012. CoastDOM v1 includes measurements of DOC, DON and DOP concentrations from all continents between 1978 and 2022 and consists of 62 338, 20 356, and 13 533 datapoints respectively.

We would like to motivate you to consider nominating yourself or a colleague to serve as a Global Ocean Observing System Steering Committee member. The importance of such a role is outlined below, and we just want to add that our biogeochemistry community needs strong leadership on the GOOS SC in order to help inform the international and intergovernmental agendas on our needs and challenges related to fulfilling our roles as ocean and climate observers and analysts. Nominations and self-nominations of Early Career Ocean Professionals will be highly appreciated!

We are pleased to inform you that applications are now being accepted for this year's Dissertations Symposium in Chemical Oceanography (DISCO XXIX) to be held 19-24 October 2024 in Lihue, Kauaʻi, Hawaiʻi. This symposium is for recent graduates or soon to graduate PhD-level scientists working on chemical oceanography related topic, who are interested in pursuing a career in academia or research laboratories. The attendees will present their research in front of their professional peers and representatives from some of the federal agencies funding chemical oceanographic research, and have the opportunity to forge professional relationships that will facilitate their future research and academic careers.

We'd like to let you know that the SCOR Secretariat invites proposals for new working groups from now until 23:59 UTC on 17 May 2024. The guidelines, a template, and word limits are available at https://scor-int.org/work/groups/proposals/, including a PowerPoint presentation explaining the proposal process.

Efficacy, timeliness and impact of the coordination and communication services we provide depends to a large degree on the willingness and availability of experts in our community to lead thematic elements of our portfolio. This is a voluntary service which, more often than not, demands engagement outside of working hours, outside of working days and sometimes outside of the direct expertise of those providing it. These Heroes need to be recognized and properly acknowledged, therefore in this message we would like to inform you about a few recent changes in the composition of the IOCCP Panel and Office. We take this opportunity to thank those rotating off and to welcome those assuming new roles.

As you may know, the World Meteorological Organization (WMO) has been given the mandate by the 19th World Meteorological Congress (Cg-19, May 2023) to develop an Implementation Plan for the Global Greenhouse Gas Watch – G3W, a new Flagship of the WMO. A G3W implementation plan draft v1.0 with a G3W presentation v1.0 to guide the document navigation, are now available for public review.

We would like to share with you the Oostende Declaration in which the 100+ ocean experts and stakeholders call for concerted international and intergovernmental efforts to create a robust, resilient and sustainable surface ocean carbon observing system.

The text of the declaration is available here: Declaration on Operationalising the Surface Ocean Carbon Value Chain