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237 contents match your search.
WMO assists National Meteorological and Hydrological Services, especially those of developing and least developed countries, in their efforts to contribute in the most effective manner to the national development and to become full partners in global collaborative efforts.
Publish Date: 24 November 2020
A landmark Data Conference convened by the World Meteorological Organization (WMO) has set the scene for a comprehensive modernization of the roles, rules and requirements for the international exchange of observations and other data which measure the pulse of the planet.
Bulletin nº Vol 63 (2) - 2014
Publish Date: 3 November 2014
Cities – particularly megacities – are becoming focal points for climate change impacts. Rapid urbanization, accelerating demand for housing, resource supplies and social and health services, place pressure on already stretched physical, social and regulatory infrastructure, heightening risks and vulnerability. In South America, internal migration flows – as well as immigration – are mostly to cities.
Bulletin nº Vol 65 (1) - 2016
Theme: Disaster risk reduction
Publish Date: 21 March 2016
Climate-related displacement is already a global reality. Every year, the lives of millions of people are affected when they are displaced by the impacts of weather and climate hazards. Some of the largest disasters make the international headlines, but most disasters do not even make the national news.
Sand and dust storms are common meteorological hazards in arid and semi-arid regions. They are usually caused by thunderstorms – or strong pressure gradients associated with cyclones – which increase wind speed over a wide area. These strong winds lift large amounts of sand and dust from bare, dry soils into the atmosphere, transporting them hundreds to thousands of kilometres away. Some 40% of aerosols in the troposphere (the lowest layer of Earth’s atmosphere) are dust particles from wind erosion.