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The World Meteorological Day 2021 theme is on The Ocean, our climate and weather .
When it comes to the weather and climate, most of us think only about what is happening in the atmosphere. If we ignore the ocean, however, we miss a big piece of the picture: covering some 70% of the Earth’s surface, the ocean is a major driver of the world’s weather and climate.
Find out how and why El Niño and La Niña events occur and other frequently asked questions.
Frequently asked questions relating to hydrological and water resources.
Frequently asked questions related to natural hazards and disasters.