Parts of the Cryosphere
The cyrosphere is made up of many parts including snow and ice; frozen ground and permafrost; glaciers, which include alpine glaciers, ice caps, and the ice sheets that cover Greenland and Antarctica; ice shelves and icebergs; sea ice; and weather and climate.
Pick a part of the cryosphere
What is the cryosphere?
This section is your introduction to the frozen parts of our planet. Learn where the cryosphere lies and how it influences life on our planet. Dive deeper into each feature below.
Arctic weather & climate
The Arctic is known as Earth's refrigerator. Land surrounds a cold ocean, which is covered by a thin layer of perennial sea ice and snow. How do these white surfaces affect weather and climate, both global and regional?
Frozen ground & permafrost
More than half of all the land in the Northern Hemisphere freezes and thaws every year, while a quarter of the land has an underground layer that stays frozen all year long. How has life learned to thrive in such a harsh environment?
Two categories of glaciers exist: ice sheets and alpine glaciers. Ice sheets cover vast areas of land in broad domes. Alpine glaciers, are smaller, and found not only at the poles, but in high mountain regions across the globe.
During a series of Pleistocene Ice Ages, vast areas of our planet were covered by land. As the planet warmed, about 12,000 years ago, the ice sheets retreated to two major land areas, Greenland in the Northern Hemisphere and Antarctica in the
This part of the cryosphere is an extension of land ice that spreads out over cold ocean waters. Since they are key in regulating glacial movement, they are an indirect, yet critical component to sea level rise.
When the surfaces of bodies of water reach their freezing point, layers of ice form. Sea ice is unique in that the water must be colder than fresh water to freeze. As such, the polar regions are cold enough to allow sea ice to form.
When most people think of the cold parts of Earth, they think of snow. Snow is much more important to the planet than simply for recreational purposes. Learn how it impacts wildlife, communities, and the global climate.
Ask a scientist
Visit this area to read common questions that have been asked of our scientists and staff. Feel free to suggest your own question.
Words matter and their meanings even more so. Search for a specific word or browse the many interesting words characteristic of the cryosphere.