The atmospheric climate is the main factor determining the existence of permafrost. However, the spatial distribution, thickness and temperature of permafrost is highly dependent on the temperature at the ground surface. The temperature at the ground surface, although strongly related to climate, is influenced by several other environmental factors such as vegetation type and density, snow cover, drainage, and soil type.
Permafrost also exists in the upper part of the crust on Mars.
Related categories GEOGRAPHY
• GEOLOGY AND PLANETARY SCIENCE
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