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Climate describes the average weather conditions for a particular location and over a long period of time. We study the climate, its variations and extremes, and its influences on a variety of activities including human health, safety and welfare to support evidence-based decision-making on how to best adapt to a changing climate.
Some 3.5 billion people reside in urban areas. This number is projected to reach 6.3 billion by 2050, increasing from 50% to more than 70% of the world’s population. Cities are centres of creativity and economic progress but they also face many environmental challenges due mainly to air pollution and weather, climate and water-related hazard.
Regional Climate Outlook Forums (RCOFs) produce consensus-based, user-relevant climate outlook products in real time through regional cooperation and partnership in order to reduce climate-related risks and support sustainable development for the coming season in sectors of critical socioeconomic significance for the region in question.
WMO supports climate policy-making by providing authoritative advice and information on climate change mitigation and adaptation. WMO draws from the best available scientific expertise from the National Hydrological and Meteorological Services of its Members, and international data centres and agencies. Moreover, WMO promotes a better understanding of the societal impacts of climate change within the United Nations system.
Data repositories and archives play a critical role as the source for the observational data used in the study of weather and climate. After over two centuries of recording observations on physical media – and the last 20 years on digital media – these records are at risk.