WMO International Greenhouse Gas Monitoring Symposium

Geneva, WMO HQ

This three-day symposium brought together stakeholders in person at the WMO Building in Geneva, Switzerland. Remote participation were also available.

OUTCOME Materials:

WMO is developing a concept for a sustained, internationally coordinated routine Greenhouse Gas Monitoring Infrastructure in consultation with a broad group of stakeholders from both scientific, operational, and policy-setting entities. This builds on WMO’s experience with the Global Atmosphere Watch and the Integrated Global Greenhouse Gas Information System, and it incorporates some of the operational practices and globally coordinated and agreed methods used in its World Weather Watch.

The aim of the infrastructure is to (i) to facilitate and encourage the implementation of a fit-for-purpose GHG surface- and space-based observing systems based on shared best practices, standards, and timely and improved access to all GHG-related observations, (ii) improve international coordination of related modeling and data assimilation activities, and (iii) make progress toward establishment of a practice of utilization of routine products provided by GHG system for post-processing and service provision in a manner that is timely to inform policy decisions. The data generated by such a system would support delivery of robust, quantitative information to nations and communities everywhere, including the Parties of the Paris Agreement, through the tailoring to address mitigation action.

The abstract submission has been closed by 6 November 2022, 24:00 CET. Based on the abstract submissions, the programme committee has formed the sessions considering the topics covered by the Symposium. The program was published on 12 December 2022, and the authors were informed directly. 

Among the topics discussed were:

  • Greenhouse gas budgets, impacting processes and associated uncertainties;
  • Observations of GHG in different domains of the Earth System to support GHG analysis (surface-, subsurface-, and space-based);
  • GHG exchange between different domains of the Earth System, processes description and climate feedbacks,
  • Treatment of GHGs in Earth system modeling, required model improvement and quality control procedures,
  • Routine, global GHG monitoring systems: input data requirements and intended output,
  • Post-processing of global systems output and tools for decision-makers’ tailoring,
  • Potential contribution of the globally coordinated GHG Monitoring Infrastructure to UNFCCC processes;

The Symposium Program Committee was co-chaired by Michel Jean (SG-GHG Chair) and Greg Carmichael (SG-GHG Co-Chair).

The Symposium was followed up by the IG3IS Stakeholder consultations and User Summit.


Description automatically generated with medium confidenceFinal Agenda

Conference Hall: Salle Obasi

Click on individual presentation titles in the programme for access
Time Agenda Items
Day 1, Opening
Moderator: Dr. Oksana Tarasova/WMO Secretariat
9:00-9:30 Introductory Remarks
Prof. Petteri Taalas/WMO Secretary-General
Prof. Gerhard Adrian/WMO President
Mr. Masanori Obayashi/Permanent Representative of Japan with WMO
Mr. Hugo Zunker/ European Commission
Mr. Michel Jean/Chair of the Program Committee of the GHG Monitoring Symposium
Session 1: Global Greenhouse Gas Monitoring – Setting the Scene
Chair: Prof. Stephen Briggs
9:30-10:30 Presentation of the Initiative (15 min) Lars Peter Riishojgaard/WMO
Keynote #1 (15 min) – Towards near real time carbon budgets Philippe Ciais/LSCE
Keynote #2 (15 min)  – The Copernicus CO2MVS: towards operational greenhouse gas emission monitoring at global and local scales Richard Engelen/ECMWF
Keynote #3 (15 min) – Multiple observation platforms and inverse/transport simulations for monitoring GHGs around Asia Yosuke Niwa/NIES
Coffee Break (30 minutes)
11:00-12:10 (10-min
 for each speaker)
NASA’s Carbon Monitoring System, a precursor to the new WMO GHG activity Ken Jucks/NASA
Integrated observation network of greenhouse gases in Korea Daegeun Shin/KMA
Developing an observational network to monitor Australian GHG emissions by top-down methods Ray Langenfelds/CSIRO
Terrestrial carbon and remote-sensing in near-real-time – a view from the Global Carbon Budget Stephen Sitch/University of Exeter
The global nitrous oxide budget 2022 Hanqin Tian/Boston College
Greenhouse Gas Emissions Information for Decision Making: A Framework Going Forward Irène Xueref-Remy/University of Aix-Marseille
Linking regional to global greenhouse gas budgets in RECCAP2 Ana Bastos/Max Planck Institute for Biogeochemistry
12:10-13:00 Panel Session 1:
• What additional information regarding greenhouse gases is required to support climate action?
• How can GHG information help drive international policy?
• What are the key required attributes (transparency, consistency, accessibility, sustainability,…) of such information, and who should be providing it?
• What are the climate risks associated with a lack of GHG information?
Prof. Stephen Briggs
Ana Bastos,
Mark Dowell,
Ken Jucks,
Yousuke Niwa,
Irène Xueref-Remy
Lunch Break (90 min)
Day 1, Session 2: Greenhouse gases in Earth System modelling and data assimilation
Chair: Susanne Mecklenburg
14:30-15:00 Keynote #1 (15 min) – Toward sub-degree-resolution for global atmospheric inverse modelling Frédéric Chevallier/LSCE
Keynote #2 (15 min) – The ocean carbon sink: Status quo, uncertainties and known unknowns in the Global Carbon Budget Judith Hauck/AWI
15:00-16:00 (10-min for each speaker) Development of a prototype operational greenhouse gas emissions estimation system Christopher P Loughner/NOAA
CEOS CO2 dataset: Pilot top-down CO2 Budget constrained by the v10 OCO-2 MIP Kevin Bowman/JPL
Low latency greenhouse gas monitoring based on NASA’s quasi-operational GEOS modeling and data assimilation system Lesley Ott/NASA
Chinese atmospheric inversion system GONGGA Xiangjun Tian/ITPCAS
Measuring the impacts of climate policy in predicted changes of atmospheric CO2 growth rate Tatiana Ilyina/Max Planck Institute for Meteorology
Opportunities and uncertainties in monitoring CO2 sequestration by terrestrial ecosystems at high latitudes using remote sensing Rui Cheng/MIT
Coffee Break (20 minutes)
16:20-16:40 (10-min
 for each speaker)
Constraining regional and global ocean carbon fluxes in RECCAP2 Jens Daniel Müller/ETH
Monitoring the “Health” of Global Carbon Cycle with NASA’s Orbiting Carbon Observatory missions Junjie Liu/JPL
16:40-17:30 Panel Session 2:
• What is the current status of GHG modeling?
• What are the limitations facing more truly integrated Earth System models for GHG applications? And which processes drive the largest uncertainties and how can they be improved?
• What are the current capabilities regarding spatial and temporal resolutions of flux estimation using GHG models and associated uncertainties at different scales?
• How can the performance be evaluated and used to improve prediction skills?
Susanne Mecklenburg
David Crisp,
Richard Engelen,
Judith Hauck,
Felix Vogel (virtual)
17:30 – 19:00 Poster Sessions and Opening Reception (Sponsored by Copernicus)
Day 2, Session 3: Observations, data exchange and data management
Chair: Jennifer Watts
9:00-9:30 Keynote #1 (15 min) – A case for significant enhancement of the vertical profiles in the WMO GHG network Colm Sweeney/NOAA
Keynote #2 (15 min) – Operationalize surface ocean carbon observations to better constrain the global carbon budget Andrew J. Watson/University of Exeter
9:30-10:40 (10-min
 for each speaker)
Leveraging ESA Climate Data Management In Support of GHG Monitoring Infrastructure Eduardo Pechorro/ESA
FAIR and open data access, the ICOS experience Alex Vermeulen/ICOS
Building an Effective Global Atmospheric Monitoring Network: Critical Lessons from the AGAGE Experience Ray F. Weiss/University of California San Diego
The Total Carbon Column Observing Network (TCCON) Thorsten Warneke/University of Bremen
Measurements and models of CO2 fluxes from Critical Zone observatories in high-altitude and high-latitude environments Marta Magnani /CNR
ICOS - The Integrated Carbon Observation System in Europe Elena Saltikoff/ICOS
Accounting for GHGs Observational Needs in NOAA’s Current Monitoring System and in the Next-Gen Space Architecture Planning Sid Boukabara & Mitch Goldberg /NOAA
Coffee Break (20 minutes)
11:00-11:30 (10-min
 for each speaker)
GLODAP – An interior ocean data product Toste Tanhua/GEOMAR Helmholtz Centre for Ocean Research Kiel
JAXA’s Greenhouse Gases Monitoring Activities in Support of Emission Estimate Hiroshi Suto/JAXA
Is the Arctic-boreal permafrost region a carbon sink or source?  State-of-knowledge and key uncertainties in high latitude carbon budgets and how this impacts global policy Jennifer Watts/Woodwell Climate Research Center
11:30-12:30 Panel Session 3:
• What are the most critical observational gaps in the various domains (atmosphere, ocean, land),  both geographically and in terms of variables?
• How do we make GHG observations sustainable over time?
• What can we do to improve current data exchange practices for GHG observations?
• What are the emerging observational capabilities in the area of GHGs in all domains?
Jennifer Watts
Elena Saltikoff,
Hiroshi Suto,
Maciej Telszewski,
Andrew Watson
Lunch Break (90 min)
Day 2, Session 4: Research and innovation
Chair: Kevin Cossel
14:00-14:30 Keynote #1 (15 min) – The Global Atmosphere Watch Greenhouse Gas and Related Activities. Greg Carmichael/GAW
Keynote #2 (15 min) – Has Termination Zero begun? – the urgent need to monitor methane isotopes. Euan G Nisbet/University of London
14:30-15:20 (10-min
 for each speaker)
Sparse data and imperfect models to quantify and project the ocean carbon sink Galen McKinley/Columbia University 
Integration of Vantage Points and Approaches in NASA’s Greenhouse Gas Research Jack Kaye/NASA
Climate TRACE: Harnessing remote sensing, artificial intelligence, and collective data to provide open and transparent estimations of greenhouse gas emissions Deborah Gordon/Climate TRACE
The role of non-growing season processes in the CH4 and N2O budgets in pristine northern ecosystems Lona van Delden/Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research
Deforestation represents direct and indirect Amazonia Carbon emissions Luciana Vanni Gatti/INPE
Coffee Break (20 minutes)
15:40-16:10 (10-min
 for each speaker)
Decreasing lifetime of N2O over the past two decades Michael Prather/University of California Irvine
Increase in wetland emissions and decrease in atmospheric sink explain the recent high growth of atmospheric methane Xin Lin/LSCE
US fossil fuel-CO2 emissions and land sinks based on monitoring of atmospheric carbon dioxide and radiocarbon John B. Miller/NOAA
16:10-17:10 Panel Session 4:
What are the most critical gaps in the understanding of GHG cycles?
• How will coordinated, sustained, routine GHG monitoring facilitate research?
• Which modeling, assimilation and observational techniques are at the stage of research to have a potential for fast transition to operations?
Kevin Cossel
Luciana Gatti,
Galen McKinley,
Detlef Stammer,
Toste Tanhua
17:10 – 19:00 Poster Sessions and Reception (Hosted by WMO)
Day 3, Session 5: Application of GHG Monitoring Information and related services
Chair: Mark Dowell
9:00-9:30 Keynote #1 (15 min) – Earth observations, the Paris Agreement and the GST Joanna Post/UNFCCC
Keynote #2 (15 min) –  Using satellites to assist countries in monitoring their methane emissions Daniel Jacob/Harvard University
9:30-10:40 (10-min
 for each speaker)
Integrating actionable methane emissions data Daniel Zavala-Araiza/International Methane Emissions Observatory
A fit-for-purpose GHG monitoring capacity towards net zero Mark Dowell/EC-JRC
Satellite observations for monitoring greenhouse gas in correlation with anthropogenic activities in Egypt Naglaa Zanaty/National Authority for Remote Sensing and Space Sciences
Satellite-derived atmospheric CO2 to estimate carbon sources and sinks from different land-cover types in Indonesia Alberth Nahas/Indonesian Agency For Meteorology, Climatology, and Geophysics
Marching Toward a Characterization of Urban Methane Emissions Israel Lopez-Coto/NIST
Progress and outcomes of the carbon monitoring project on the Beijing-Tianjin-Hebei (JJJ) City Cluster Pengfei Han/IAP-CAS
UK GHG Inventory Verification System Alistair Manning/UK Met Office
Coffee Break (20 minutes)
11:00-11:30 (10-min
 for each speaker)
Using atmospheric monitoring tools to understanding methane emissions in Canada from local to national scale Felix Vogel/ECCC
Encouraging the Use of Remote Sensing Observations of Greenhouse Gases by the Policy and Inventory Communities David Crisp/Crisp Spectra LLC
Towards Enhanced Use of Atmospheric Inversions for QA/QC and Verification of National Emission Inventories in support of UNFCCC  Tomohiro Oda/Universities Space Research Association
11:30-12:30 Panel Session 5:
• What are the main applications of GHG monitoring output on different scales (e.g., global stocktake, urban applications, sectorial mitigation strategies)?
• How do we identify user requirements for GHG information and engage with the end user community?
• What are the challenges in tailoring the GHG monitoring outputs to the needs of users?
• What factors may limit the uptake of the GHG monitoring infrastructure output?
Mark Dowell
Jorn Herner,
Andrea Kaiser-Weiss,
Israel Lopez-Coto,
Alistair Manning,
Kiyoto Tanabe
Lunch Break (90 min)
Day 3, Session 6: Summary and What We Do Next
Co-Chairs: Michel Jean, Greg Carmichael
14:00-15:30 Panel Sessions Summaries  
15:30-16:00 Way forward and closure  
End of Symposium

Poster Session  Go>>


  Contact information

For more information please contact:

Lars Peter Riishojgaard, at Lriishojgaard@wmo.int

Jitsuko Hasegawa, at Jhasegawa@wmo.int

Oksana Tarasova, at Otarasova@wmo.int

Bin Qu, at Bqu@wmo.int