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Marine Ecosystem Analysis and Prediction (MEAP-TT)


The MEAP Task Team is focused on developing the underpinning science and tools that will further the integration of biogeochemical and ecosystem models into existing ocean operational systems. The Task Team’s mission is to advocate for an expansion of the ocean observing system with respect to biogeochemical and biological properties, to support method development for the assimilation and modelling of Essential Biogeochemical Variables (EBV), to exchange of scientific advances and transfer of capabilities between academic and operational centers of expertise, and to help bridge the gap with end-users.

The area of biogeochemical and ecosystem prediction is of significant societal relevance, supports the UN Sustainable Development Goals 13 (climate change) and 14 (life below water), and supports Blue Growth. It is an area likely to make important advances in the next 5 to 10 years because relevant ocean observing capabilities are rapidly expanding.<

The MEAP-TT is led by the co-chairs:


  • Drive forward method development focused on two main aspects:
    • the extraction of ecological information from proxy observations (incl. satellite observations of ocean colour and bio-optical measurements from autonomous in-situ sensors), and
    • the development of strongly coupled assimilation of biological and physical observations into ocean models;
  • Advocate for the expansion of global ocean observing capabilities with respect to biogeochemical and biological variables (e.g. via BGC Argo), and guide optimal design including through observing system simulation studies;
  • Contribute to the development and provision of biogeochemical and biological products for end users through assessments of product quality and end user needs;
  • Demonstrate and quantify the improvements in biogeochemical and biological model skill resulting from advances in biogeochemical/biological ocean observation and assimilation, including identification of metrics for system evaluation.


The MEAP-TT will promote scientific collaboration and deliver joint outputs of team members by:

  • Meeting in periodic video conferences (every three months)
  • Meeting annually in person at Task Team workshops
  • Convening MEAP theme sessions at international conferences (e.g. EGU, Ocean Sciences, AMEMR)
  • Editing special issues in Journals (e.g. Special Issue on Biogeochemical-Argo modelling in Biogeosciences)
  • Co-authorship of horizon publications and influential reports (e.g. Fennel et al., 2019; ETOOFS manual, Ocean State Reports)
  • Engagement of ecosystem analysis and prediction stakeholders (e.g. IMBER, OceanSITES, BGC-Argo)


MEAP-TT Members


No First name  Last name Affiliation Country Role
 1 Laurent Bertino NERSC Norway Member
 2 Pierre Brasseur CNRS/IGE France Member
 3 Chris Brown NOAA USA Member
 4 Fei Chai University of Maine USA Member
 5 Kunal Chakraborty INCOIS India Member
 6 Stefano Ciavatta PML UK Co-chair
 7 Gianoiero Cossarini OGS Italy Member
 8 Stephanie Dutkiewicz MIT USA Member
 9 Chris Edwards UCSC USA Member
10 Katja Fennel Dalhousie University Canada Co-chair
11 David Ford Met Office UK Member
12 Marjorie Friedrichs Virginia Institute of marine Science USA Member
13 Marilaure Gregoire University of Liege Belgium Member
14 Elodie Gutknecht MOi France Member
15 Youichi Ishikawa Kyoto University/ JAMSTEC Japan Member
16 Emlyn Jones CSIRO Australia Member
17 Hae-Cheol Kim NOAA USA Member
18 Julien Lamouroux Mercator Ocean France Member
19 Patrick Lehodey CLS France Member
20 Paul Mattern UCSC USA Member
21 Ragu Murtugudde ESSIC/ University of Maryland USA Member
22 Angelica Pena DFO Canada Member
23 Coralie Perruche Mercator Ocean France Member
24 Kostas Tsiaras HCMR Greece Member
25 Ariane Verdy Scripps Institution of Oceanography USA New member (Oct 2020)
26 Marcello Vichi University of Cape Town South Africa Member
27 Tsuyoshi Wakamatsu NERSC Norway Member
28 Yongsheng Wu BIO Canada Member
29 Liuqian Yu The Hong Kong University of Science and Technology China Member


Patron champion:

Paul DiGiacomo, NOAA, USA


Status: Feb 2021

Workshops and meetings

An important  activity of the MEAP-TT is to organise regular workshops. In order to increase collaboration, these workshops are often held jointly with other TTs or groups. Planned and previous workshops include:


→ Joint DA/MEAP-TT workshop 2016, Santa Cruz, USA

→ MEAP-TT Workshop 2015, Halifax, Canada

→ MEAP-TT Workshop 2012, Exeter, UK



Online meetings

Since Oct 2020 the MEAP-TT started holding regular virtual Task Team meetings to discuss TT activities and future plans.


Date Description Participants Presentations Meeting summary
2021, 10 March 2nd online MEAP-TT meeting Pierre Brasseur (CNRS/LEGI), Chris Brown (NOAA), Fei Chai (University of Maine), Kunal Chakraborty (INCOIS), Stefano Ciavatta (PML), Paul DiGiacomo (NOAA), Chris Edwards (UCSC), Katja Fennel (Dalhousie), David Ford (Met Office), Marjy Friedrichs (Virginia Institute of marine Science), Marilaure Gregoire (Uni of Liege), Elodie Gutknecht (MOi), Hae-Cheol Kim (NOAA), Julien Lamouroux (MOi), Paul Mattern (UCSC), Alex Mignot (MOi), Angelica Pena (DFO), Coralie Perruche (MOi), Kostas Tsiaras (HCMR), Tsuyoshi Wakamatsu (NERSC), Kirsten Wilmer-Becker (Met Office) Agenda

Intro presentation (Stefano Ciavatta, Katja Fennel)

Implementing Darwin in ROMS: Initial results from regional simulations with a complex ecosystem model, Jann Paul Mattern (UCSC)

SEAMLESS project, Stefano Ciavatta (PML)

Meeting recording (mp4)
2020, Oct 14 1st online meeting of the MEAP-TT Pierre Brasseur, Chris Brown, Kunal Chakraborty, Eric Chassignet, Stefano Ciavatta, Gianpiero Cossarini, Fraser Davidson, Paul DiGiacomo, Christopher Edwards, Katja Fennel, David Ford, Marjy Friedrichs, Marilaure Grégoire, Elodie Gutknecht, Fabrice Hernandez, Emlyn Jones, Johannes Karstensen, Jong Kim, Hae-Cheol Kim, Julien Lamouroux, Alex Mignot, Paul Mattern, Angelica Pena, Coralie Perruche, Hal Ritchie, Raquel Somavilla, Marcello Vichi, Tsuyoshi Wakamatsu, Kirsten Wilmer-Becker, Yongsheng Wu, Liuqian Yu Agenda

Intro presentation (Stefano Ciavatta, Katja Fennel)

OceanSITES, Johannes Karstensen (GEOMAR)

Assessment of the CMEMS Global biogeochemical forecasting operational system, with assimilation of OC data, Julien Lamouroux & Coralie Perruche (MOi)

Meeting summary (pdf)



Meeting reports:

TT quad-chart

The task team quad-chart provides a quick glance at the TT’s activities, achievements and future plans.


Marine Ecosystem Analysis and Prediction Task Team (MEAP-TT) – June 2018
Short description and objectives of the activities started/planned for this year:
Accomplishments of the TT this year:
Main activities:

• Main objective: evaluate of downscaling from global to regional physical/biogeochemical configurations across GODAE/GOV systems.

Year 3 milestone: organizing of a session on down-scaling as a multi-TT event: “Ecosystem response to physical drivers in coastal regions”, (cross-cutting theme at the 6th International meeting of COSS-TT, Madrid 19-21 September 2018)

Main achievements:

• Special session at 2018 Ocean Sciences Meeting (OSM) “Development and Advances of Modeling and Forecasting Marine Biogeochemistry and Ecosystems” (convenors: F. Chai, P. Xiu, M. Gehlen, S. A. Siedlecki)

• Informal TT meeting at OSM

• Special session at 2017 EGU GA “Recent advances in analysis and prediction of marine biogeochemistry and ecosystems” (convenors: Gehlen, Fennel, Dutkiewicz (IOCCG))

• TT meeting at 2017 EGU GA

Future plans to continue/ improve current activities:
Issues/ problems:
Main future plans:

• On-going: review of impacts of DA methods on biological/biogeochemical model

• Preparation of scientific session at international GODAE OceanView Symposium in 2019

Main issues:

• Difficulty to ensure a good representation of non-European members at meetings organised in Europe due to travel restrictions

• Difficulty to carry out concrete actions (e.g. intercomparison projects) on best effort basis (enthusiasm during planning dies off rapidly as it implies extra work added to an in general already heavy load)