The Secretariat
Meet WMO Executive Management
The WMO Secretariat, headquartered in Geneva, is headed by the Secretary-General. Together with the Deputy Secretary-General and the Assistant Secretary-General, they make up the Executive Management.
The WMO Secretary-General is responsible for the overall technical and administrative work of the Secretariat. She/he manages this function through delegation of authority to the Deputy Secretary-General and the Assistant Secretary-General. The Secretary-General appoints all the Secretariat staff, including the Deputy Secretary-General and the Assistant Secretary-General, in accordance with regulations established by the World Meteorological Congress, and with the approval of the Executive Council.
The Secretary-General is appointed by the Congress for a four-year term, with a maximum tenure of 8 years.
Global Management Team
The Global Management Team is composed of Directors who meet once a month to discuss overall progress towards achieving departmental targets and organizational objectives and goals. The Senior Management Team of Directors signs annual compacts, which function as accountability documents, to ensure delivery on the Organization's high-level objectives.
WMO reorganization
In August 2025, the Secretary-General approved a comprehensive reorganization of the WMO Secretariat, marking a decisive step toward a unified “One WMO” approach. This transformation responds to evolving global challenges, the need for more integrated Earth system services, and increasing financial constraints. The reorganization strengthens WMO’s institutional resilience, optimizes resources, and aligns Secretariat structures more closely with Members’ priorities.
Ethics Office
The ethics services are now provided by the UN Ethics Office.
They can be reached via their contact page.