Finale: Impact of the ORCHESTRA/ENCORE programmes on Southern Ocean heat and carbon understanding

The 5-year Ocean Regulation of Climate by Heat and Carbon Sequestration and Transports (ORCHESTRA) programme and its 1-year extension ENCORE (ENCORE is the National Capability ORCHESTRA Extension) was an approximately 11-million-pound programme involving seven UK research centres that finished in March 2022. The project sought to radically improve our ability to measure, understand and predict the exchange, storage and export of heat and carbon by the Southern Ocean. It achieved this through a series of milestone observational campaigns in combination with model development and analysis. Twelve cruises in the Weddell Sea and South Atlantic were undertaken, along with mooring, glider and profiler deployments and aircraft missions, all contributing to measurements of internal ocean and air–sea heat and carbon fluxes. Numerous forward and adjoint numerical experiments were developed and supported by the analysis of coupled climate models. The programme has resulted in over 100 peer-reviewed publications to date as well as significant impacts on climate assessments and policy and science coordination groups. Here, we summarize the research highlights of the programme and assess the progress achieved by ORCHESTRA/ENCORE and the questions it raises for the future. This article is part of a discussion meeting issue ‘Heat and carbon uptake in the Southern Ocean: the state of the art and future priorities’.


Publication status:
Authors: Meijers, Andrew J.S. ORCIDORCID record for Andrew J.S. Meijers, Meredith, Michael P. ORCIDORCID record for Michael P. Meredith, Shuckburgh, Emily F., Kent, Elizabeth C. ORCIDORCID record for Elizabeth C. Kent, Munday, David R. ORCIDORCID record for David R. Munday, Firing, Yvonne L. ORCIDORCID record for Yvonne L. Firing, King, Brian ORCIDORCID record for Brian King, Smyth, Timothy J., Leng, Melanie J. ORCIDORCID record for Melanie J. Leng, Nurser, A.J. George, Hewitt, Helene T., Abrahamsen, E. Povl ORCIDORCID record for E. Povl Abrahamsen, Weiss, Alexandra, Yang, Mingxi, Bell, Thomas G., Brearley, J. Alexander ORCIDORCID record for J. Alexander Brearley, Boland, Emma J.D. ORCIDORCID record for Emma J.D. Boland, Jones, Daniel C. ORCIDORCID record for Daniel C. Jones, Josey, Simon A. ORCIDORCID record for Simon A. Josey, Owen, Robyn P., Grist, Jeremy P. ORCIDORCID record for Jeremy P. Grist, Blaker, Adam T. ORCIDORCID record for Adam T. Blaker, Biri, Stavroula ORCIDORCID record for Stavroula Biri, Yelland, Margaret J. ORCIDORCID record for Margaret J. Yelland, Pimm, Ciara, Zhou, Shenjie ORCIDORCID record for Shenjie Zhou, Harle, James, Cornes, Richard C. ORCIDORCID record for Richard C. Cornes

On this site: Alexandra Weiss, Andrew Meijers, Dave Munday, Dani Jones, Emma Boland, Povl Abrahamsen, Alexander Brearley, Michael Meredith, Shenjie Zhou
26 June, 2023
Philosophical Transactions of the Royal Society A / 381
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