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International Symposium on
Non-CO2 Greenhouse Gases

 

 
 

 

NCGG10: The other half of the problem

10th International Symposium on Non-CO2 Greenhouse Gases 

June 15-17, 2026, Utrecht, The Netherlands

 

 

NCGG10 Programme Schedule Day 1

Below is the programme overview for Day 1. All speakers and presentations, including links to abstracts, are available in the full programme.

Download Full Programme (PDF)

 

DAY 1,  Monday June 15th

09:00  

09:10  

09:50  

Opening — by Margreet van Zanten

Keynote — Methane satellite observations in support of climate action
by Ilse Aben 

Keynote — Cool hydrogen is hot
by Arjan Hensen

Plenary room — 0.51

10:30 

Coffee break

11:00

Thematic sessions

Plenary room — 0.51

Non-CO2 mitigation and impacts

Chair: Dr. Lena Hoglund-Isaksson, International Institute for Applied Systems Analysis – IIASA

Room — 1.34

N2O: observations, emissions, local budgets and policies

Chair: Prof. dr. ir. Gerard Velthof , Wageningen University & Research - WUR

Room — 1.49

Satellite-based methane source estimations

Co-chairs: Prof. dr. ir. Sander Houweling, Vrije Universiteit Amsterdam - VU
Dr. ir. Bram Maasakkers, Space Research Organization Netherlands - SRON, NL 

 

Room — 1.53

Halocarbons: observations, emissions, local budgets and policies

Chair: Prof. dr. ir.  Guus Velders, Dutch National Institute for Public Health - RIVM

13:00

Plenary room — 0.51

Day Chair: TBD

09:00  

Opening — by Margreet van Zanten

09:10  

Keynote — Methane satellite observations in support of climate action
by Ilse Aben

09:50  

Keynote — Cool hydrogen is hot
by Arjan Hensen

10:30 

Coffee break

11:00

Thematic sessions

Plenary room — 0.51

Non-CO2 mitigation and impacts

Chair: Dr. Lena Hoglund-Isaksson, International Institute for Applied Systems Analysis – IIASA

Room — 1.34

N2O: observations, emissions, local budgets and policies

Chair: Prof. dr. ir. Gerard Velthof , Wageningen University & Research - WUR

Room — 1.49

Satellite-based methane source estimations

Co-chairs: Prof. dr. ir. Sander Houweling, Vrije Universiteit Amsterdam - VU
Dr. ir. Bram Maasakkers, Space Research Organization Netherlands - SRON, NL 

Room — 1.53

Halocarbons: observations, emissions, local budgets and policies

Chair: Prof. dr. ir.  Guus Velders, Dutch National Institute for Public Health - RIVM

13:00

Lunch break

14:00

Thematic sessions

Plenary room — 0.51

Non-CO2 mitigation and impacts (continuation)

Chair: Dr. Lena Hoglund-Isaksson, International Institute for Applied Systems Analysis – IIASA

 

Room — 1.34

N2O: observations, emissions, local budgets and policies (continuation)

Chair: Prof. dr. ir. Gerard Velthof , Wageningen University & Research - WUR

 

Room — 1.49

Satellite-based methane source estimations (continuation)

Co-chairs: Prof. dr. ir. Sander Houweling, Vrije Universiteit Amsterdam - VU
Dr. ir. Bram Maasakkers, Space Research Organization Netherlands - SRON, NL 

 

Room — 1.53

Halocarbons: observations, emissions, local budgets and policies (continuation)

Chair: Prof. dr. ir.  Guus Velders, Dutch National Institute for Public Health - RIVM

 

15:40

Break

16:10

Thematic sessions

Plenary room — 0.51

Global and regional budgets and inverse modelling

Co-chairs: Prof. dr. Maarten Krol , Wageningen University & Research - WUR & Institute for Marine and Atmospheric Research - IMAU 
Prof. emeritus dr. Peter Builtjes 

 

Room — 1.34

N2O: observations, emissions, local budgets and policies (continuation)

Chair: Prof. dr. ir. Gerard Velthof , Wageningen University & Research - WUR

Room — 1.49

Water systems - lakes, rivers, ditches, wetlands, esturia and offshore

Chair: Dr. Ilona Velzeboer , Netherlands Organisation for Applied Scientific Research - TNO

Room — 1.53

(Extra-)Tropical ecosystems

Chair: Prof. Klaus Butterbach-Bahl, Aarhus University & Karlsruhe Institute for Technology - IMK-IFU/KIT

14:00

Thematic sessions

Plenary room — 0.51

Non-CO2 mitigation and impacts (continuation)

Chair: Dr. Lena Hoglund-Isaksson, International Institute for Applied Systems Analysis – IIASA

Room — 1.34

N2O: observations, emissions, local budgets and policies (continuation)

Chair: Prof. dr. ir. Gerard Velthof , Wageningen University & Research - WUR

Room — 1.49

Satellite-based methane source estimations (continuation)

Co-chairs: Prof. dr. ir. Sander Houweling, Vrije Universiteit Amsterdam - VU
Dr. ir. Bram Maasakkers, Space Research Organization Netherlands - SRON, NL 

Room — 1.53

Halocarbons: observations, emissions, local budgets and policies (continuation)

Chair: Prof. dr. ir.  Guus Velders, Dutch National Institute for Public Health - RIVM

15:40

Break

16:10

Thematic sessions

Plenary room — 0.51

Global and regional budgets and inverse modelling

Co-chairs: Prof. dr. Maarten Krol , Wageningen University & Research - WUR & Institute for Marine and Atmospheric Research - IMAU 
Prof. emeritus dr. Peter Builtjes 

Room — 1.34

N2O: observations, emissions, local budgets and policies (continuation)

Chair: Prof. dr. ir. Gerard Velthof , Wageningen University & Research - WUR

Room — 1.49

Water systems - lakes, rivers, ditches, wetlands, esturia and offshore

Chair: Dr. Ilona Velzeboer , Netherlands Organisation for Applied Scientific Research - TNO

Room — 1.53

(Extra-)Tropical ecosystems

Chair: Prof. Klaus Butterbach-Bahl, Aarhus University & Karlsruhe Institute for Technology - IMK-IFU/KIT

17:50  

END OF DAY 1

untill
19:00  

Ice-breaker reception

Meet fellow attendees, reconnect with colleagues, and begin networking in a relaxed and welcoming atmosphere

 

Organizers

 
 
 

Supported by:

Sponsored by:

 
 

Symposium Secretariat

NCGG10 is organized by:

 
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network of environmental professionals

 

 
 

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MilCon

Stichting MilCon (Foundation for Environmental Congresses, a separate legal entity that is linked to VVM) is responsible for the logistic and financial management of NCGG10. The contents of the symposium is the responsibility of VVM and its co-organisers. Logistic services for NCGG10 will be provided by the VVM.