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The Global Climate Observing System (GCOS) is a co-sponsored programme which regularly assesses the status of global climate observations and produces guidance for its improvement.  

It is co-sponsored...

Offering operationally reliable, surface-based and space-based subsystems with observing facilities on land, at sea, in the air and in outer space in support of the World Weather Watch...

Providing better hydrologic information, assessments and forecasts, so that Members are able to independently assess their water resources and respond to the threat of floods and droughts....

 Enabling the delivery of weather and related services for sound decision-making on public safety and cost-efficiency in all social and economic activities affected by weather.

Enhancing the contributions of National Meteorological and Hydrological Services (NMHSs) to disaster risk reduction (DRR) at all levels in a more cooperative, cost-effective, systematic and sustainable manner....

Ensuring the efficient and effective functioning of the six WMO Regional Associations in coordinating the meteorological, hydrological, climatologic and related activities of their Members by providing a framework for...

Assisting National Meteorological and Hydrological Services in providing weather and climate services to farmers, herders and fishermen in order to promote sustainable agricultural development, increase productivity and contribute to food security...

Assisting in the capacity development of National Meteorological and Hydrological Services (NMHSs) by improving human, technical and institutional capacities and infrastructure, particularly in developing, least developed and small island developing states and territories in order...

Supporting the safety of life and property at sea, integrated coastal management and the minimization of societal impacts from natural hazards through the provision of meteorological-ocean services....

The World Climate Research Programme (WCRP) coordinates and guides international climate research to develop, share and apply the climate knowledge that contributes to societal well-being.

Addressing atmospheric composition on all scales: from global, regional, to local and urban.

Enabling the National Meteorological and Hydrological Services (NMHSs) in Least Developed Countries (LDCs) to enhance both human and institutional capacities in order to eradicate poverty, achieve internationally agreed development goals...

Improving the understanding of the climate system for the benefit of societies coping with climate variability and change.

Coordinating the activities of Members related to the space-based observing system component of the WMO Integrated Global Observing System to ensure sustained and interoperable satellite observations and to promote their...

Providing reliable, high quality, timely and cost-effective meteorological services to aviation users worldwide.

Whether due to natural climate variability or climate change, the likelihood of extreme weather conditions is increasing. The impacts include more frequent and severe droughts, which affect the...

Coordinating the global system of telecommunication facilities and arrangements for the rapid collection, exchange and distribution of observations and processed information within the framework of the World Weather...

Providing assistance and support to National Meteorological and Hydrological Services (NMHSs) in developing and least developed countries and small island developing states.

Assisting Members in monitoring and forecasting tropical cyclones to reduce disaster-related losses of life and infrastructure.

Enabling worldwide use of specialized and tailored products in support of environmental emergency response involving large-scale dispersion of air-borne hazardous substances.

Enabling worldwide use of timely, reliable and accurate Numerical Weather Prediction (NWP) products and services in all time-scales for applications related to weather, climate, water and environment....

Floods are the most common natural hazards with the largest impacts on society. Although exceptionally devastating floods distort the trend, flood impact records show that the number of related fatalities...

Setting technical standards, quality control procedures and guidance for the use of meteorological instruments and observation methods in order to promote development documentation and worldwide standardization.

Connecting people and institutions to  the learning opportunities necessary for well-functioning meteorological, hydrological and climate services.

Small Island Developing States and Member Island Territories are low-lying island nations that are highly vulnerable and often affected by weather extremes and climate change, including the increased severity...

Research activities focusing on high-impact weather – from basic research in the academic community to operational contributions.