Meeting of the Expert Team on Atmospheric Composition Prediction System (ET-ACPS) (Geneva, Switzerland, 15 April 2026)
Geneva, Switzerland
The Expert Team on Atmospheric Composition Prediction System (ET-ACPS) is responsible for the scientific and technical coordination of atmospheric composition activities, with the aim of further advancing the WMO Integrated Processing and Prediction System (WIPPS), including the functions and products of relevant WIPPS Designated Centres.
The meeting of ET-ACPS will deliberate on the deliverables for the fourth session of the Commission for Observation, Infrastructure and Information Systems (INFCOM-4), including the compliance review of RSMCs for Atmospheric Sand and Dust Storm Forecasts (ASDF), as well as proposed amendments to the Manual on the WIPPS (WMO-No. 485) and the Guide to the WIPPS (WMO-No. 305).
The meeting will also discuss prioritized tasks targeting INFCOM-5, including the development of verification frameworks for ASDF and Vegetation Fire and Smoke Pollution Forecasts (VFSP) products and the potential introduction of global-scale air quality forecasting activities within WIPPS.
In addition to the meeting, the ET-ACPS members will contribute to the Global Atmosphere Watch (GAW) as subject-matter experts and leverage the presence of participants at the Global Atmosphere Watch (GAW) Symposium 2026 to facilitate coordinated discussions on atmospheric composition prediction within the WMO framework. For more information about GAW including agenda can be found here, https://wmo.int/events/meeting/global-atmosphere-watch-gaw-symposium-2026.
MEETNING INFORMATION
- The annotated agenda for the ET-ACPS meeting is available at the following link: Provisional annotated agenda.
- Online participants may join the meeting via the link.
PROVISIONAL AGENDA
Wednesday, 15 April 2026 | |
|---|---|
| 08:30 – 08:40 | 1. OPENING – Yuki Honda 1.1 Welcoming remarks
1.2 Roundtable introduction – All participants |
| 08:40 – 08:50 | 2. ORGANIZATION OF THE MEETING – Laurence Rouil 2.1 Adoption of the agenda 2.2 Working arrangements |
| 08:50 – 09:20 | 3. RECENT WIPPS DEVELOPMENTS AND WMO CONSTITUENT BODIES' MEETING – Laurence Rouil 3.1 Introduction of new developments in WIPPS - Secretariat 3.2 Meetings of WMO constituent bodies including document plan - Secretariat |
| 09:20 – 09:50 | 4. DELIVERABLES TO INFCOM-4 – Laurence Rouil 4.1 Compliance review of RSMCs for atmospheric sand and dust storm forecasts (RSMCs-ASDF) - Secretariat 4.2 The amendments for the Manual on the WIPPS (WMO-No. 485) and the Guide to the WIPPS (WMO-No. 305) - Secretariat |
| 09:50 – 10:20 | 5. TOPIC HIERACHY TO LINK RSMCS PRODUCTS TO WIS 2.0 – Laurence Rouil Introduction of WIS2 - Hassan Haddouch Summary of topic hierarchies in Weather and Atmospheric Composition - Secretariat |
| 10:20 – 10:50 | HEALTHY BREAK |
| 10:50 – 11:50 | 6. INTRODUCTION OF VERIFICATION OF RSMCS-ASDF AND RSMCS-VFSP PRODUCTS INTO THE MANUAL ON THE WIPPS – Laurence Rouil Verification of Limited-Area NWP (example) - Secretariat RSMC-ASDF Barcelona: model evaluation - Ernest Werner Southeast Asian RSMC-VSFPS Verifications - Kaiyuan ZHENG |
| 11:50 –12:30 | 7. INTRODUCTION OF NEW WIPPS ACTIVITY ON GLOBAL AIR QUAILITY FORECASTS – Laurence Rouil |
| 12:30 –12:50 | 8. SPECIFIC ITEMS FOR FURTHER DISCUSSION – Laurence Rouil 8.1 Estimation dust concentration to total PM10 8.2 Update colour scale for wet deposition - Ernest Werner |
| 12:50 – 13:00 | 9. ANY OTHER BUSINESS – Laurence Rouil |
| 13:00 | END OF THE MEETING |