主题页介绍WMO正在开展的主题事项，提供可获取的信息、定义、影响以及某主题与WMO工作关联的方法。这些主题贯穿整个网站，以供参考。

Main themes

Large thunderstorm cloud illuminated by lightning over the ocean at night, with stars visible in the sky and a small coastal area lit on the right side.

天气
Dense forest with tall trees in the foreground, covered in morning mist, under a bright orange sunrise sky.

气候
A child in a pink shirt and striped shorts rinses their face with water from an outdoor faucet on a sunny day.

水

Natural hazards

Cracked, dry ground stretches toward a distant water reservoir, with hills and a clear blue sky in the background.

Drought
Heatwave on the city with the glowing sun background

极端高温
Person in shorts wades through knee-deep water, pushing a bicycle. The lower part of the bike and legs are partially submerged.

Floods
A huge cloud of sand blows over a city.

Sand and dust storms
Satellite view of a large, swirling hurricane over the ocean near a continent, with a clear eye at the center and surrounding cloud bands.

Tropical cyclone

野火

Sectors

Drone in storm over roiling waters

人工智能
flying above the clouds watching the landscape

Aviation
Image shows solar panels, wind mills and a power grid against a blu sky with small clouds

能源
People ride motorbikes across a rusty metal bridge in an urban area, with buildings visible on the right and a sidewalk running alongside the road.

Health

Earth System domains

Nepal's mount everest at sunset.

Cryosphere
Image of a satellite in orbit around the Earth

Earth observation satellites
Panoramic view of a glacier winding between rugged mountains under a blue sky with scattered clouds. Rocky foreground leads to the expansive ice flow, surrounded by green slopes and rocky peaks.

Glaciers and Ice Caps
Aerial view of ocean waves with white foam and deep blue water.

Ocean
Ice floes floating on a vast ocean under a clear blue sky, showcasing a polar seascape.

Sea Ice
Snow-covered mountain landscape under a blue sky with scattered clouds, featuring two prominent peaks and soft shadows on the snow.

Snow

Atmospheric phenomena

Silver Lining on the ocean

厄尔尼诺/拉尼娜现象
Smoke rises from a power plant at sunset.

温室气体