Participation: The meeting is on invitation only, open to CGMS members, observers and invited guests.

The 55th CGMS Working Group sessions will be held on 19-23 April 2027, 07:00-15:00 (UTC) daily, at EUMETSAT Headquarters in Darmstadt, Germany.

Participation

The meeting is for members of CGMS working groups WGI, WGII, WGIII, WGIV and SWCG, together with representatives from CGMS space agencies, WMO and IOC-UNESCO, the CGMS International Science Working Groups, as well as guests (on invitation only).

The working group meetings will be held in person, and we strongly encourage CGMS members to come to Darmstadt. Limited hybrid facilities will be provided.

Visa support

Kindly check here if you need visa to enter in Germany.

Participants that need a dedicated invitation letter to apply for visa are requested to provide the below information as soon as possible:

• scanned copy of the passport information page. Please ensure that the scan is clear, and all details are legible.

Please submit this information to the CGMS Secretariat at cgmssec@eumetsat.int.

Please address any enquiries you might have directly to cgmssec@eumetsat.int.

We are looking forward to welcoming you to Darmstadt in April!

Objectives

The overall objective of this annual workshop is to perform the CGMS risk assessment and to review and update the CGMS baseline as necessary.

The specific key objectives of the workshop are to:

• Consider the latest WMO gap analysis and any impact on the CGMS baseline;
• Perform the annual CGMS risk assessment;
• Review and update the CGMS baseline for recommendation to plenary;
• Identify contingency actions as necessary;
• Prepare for the CGMS-55 WGIII meeting including action review.

We will also address risks related to the potential gap in Earth radiation budget observations and to the potential loss of low-inclination radio occultation observations in the next decade following the end of life of the COSMIC-2 mission.

Participation

Participation to this workshop is on invitation only and for representatives from all CGMS members (CGMS space agencies, WMO and IOC-UNESCO), typically
coinciding with the CGMS WGIII participation.

Contact information

For questions related to the agenda, please contact:

• WG III co-chairs: tim.walsh@noaa.gov, tangsh@cma.gov.cn
• WG III rapporteurs: hpohjola@wmo.int, anne.taube@eumetsat.int (acting)
• WGIII risk assessment book captain: melissa.c.johnson@noaa.gov
• Host: cgmssec@eumetsat.int, anne.taube@eumetsat.int, antoine.berment@eumetsat.int

More information on the meeting is available on the ITWG website.