The World Meteorological Organization is the UN's voice on weather, climate, and water resources, providing scientific insights into our atmosphere and climate behavior.

Supplement: State of Climate Services 2024 Supplement: Significant Weather & Climate Events 2024 The clear signs of human-induced climate change reached new heights in 2024, which was likely the …

Dec 4, 2025 · Climate is the average weather conditions for a particular location over a long period of time, ranging from months to thousands or millions of years. WMO uses a 30-year period to …

The State of the Global Climate 2023 report shows that records were once again broken, and in some cases smashed, for greenhouse gas levels, surface temperatures, ocean heat and acidification, sea …

Land cover; Maps of High-Resolution Land Cover; Maps of Key IPCC Land Classes, Related Changes and Land Management Types Land cover is the observed (bio)-physical cover on the Earth’s …

The IPCC defines climate change as a change in the state of the climate that persists for an extended period, typically decades or longer.

Sea State is the characterization of wave and swell, typically in terms of height, wavelength, period, and directional wave energy flux. Waves generated by ocean surface stress evolve from wind waves to …

“Climate change has become a global crisis and is the defining challenge that humanity currently faces. Communities, economies and ecosystems throughout the South-West Pacific region are significantly …

Nov 21, 2025 · The WMO Climate Services Information System (CSIS) is the principal mechanism through which information about climate – past, present and future – is routinely produced, archived, …

Global climate predictions show temperatures are expected to continue at or near record levels in the next five years, increasing climate risks and impacts on societies, economies and sustainable …