Structure of the Secretariat

Structure of the Secretariat

The Secretariat is headed by the Secretary-General, who is appointed by the World Meteorological Congress for a four-year term with a maximum tenure of 8 years. The Secretary-General has the responsibility to appoint all Secretariat staff, including the Deputy Secretary-General and the Assistant Secretary-General, in accordance with regulations established by Congress, and with the approval of the Executive Council.



Petteri Taalas


Petteri Taalas



Entities under direct supervision of the Secretary-General:

Legal Counsel
Internal Oversight Office
Ethics Office
(shared with ITU)

Elena Manaenkova/WMO


Elena Manaenkova
Deputy Secretary-General


Entities under supervision of the Deputy Secretary-General:

Strategic Planning Office
Intergovernmental Panel on Climate Change (IPCC), co-sponsored by WMO and UNEP

and the following departments:

Robert Masters

Cabinet and External Relations Department

Communications and Public Affairs
New York and Brussels liaison offices
Information Management Unit


Director: Robert Masters

Johannes Cullmann

Climate and Water Department

Climate Prediction and Adaptation Branch
Hydrology and Water Resources Branch
Global Framework for Climate Services
Global Climate Observing System (GCOS) Secretariat (co-sponsored by WMO, IOC/UNESCO, UNEP and ICSU)
Who is who in the Climate and Water Department


Director: Johannes Cullmann

Maja Carrieri

Language, Conference and Publishing Services Department

Linguistic Services and Publishing Branch
Conferences Unit



Director: Maja Carrieri


Research Department

Atmospheric Research and Environment Branch
World Climate Research Programme (co-sponsored by WMO, UNESCO/IOC and ICSU) Joint Planning Staff



Director: Deon Terblanche

Wenjian Zhang/WMO


Wenjian Zhang
Assistant Secretary-General



Entities under supervision of the Assistant Secretary-General:

Fernando Belda

Observing and Information Systems Department 

WMO Integrated Global Observing System Branch
WMO Information System Branch


Director: Fernando Belda

Development & Regional Activities Department

Resource Mobilization Office
Office for the Least Developed Countries Programme and Regional Coordination
Regional Offices
Education and Training Office


Director: Mary Power


Angiolo Rolli

Resource Management Department

Budget Office
Finance Division
Human Resource Division
Information Technology and Common Services Division
Procurement, Contract Management and Travel Services (PTS) Division


Director: Angiolo Rolli

Xu Tang

Weather and Disaster Risk Reduction Services Department

Meteorological Applications Branch
Multi-hazard Early Warning Services Division


Director: Xu Tang