Skip to content
Skip to main content

About this free course

Download this course

Share this free course

The frozen planet
The frozen planet

Start this free course now. Just create an account and sign in. Enrol and complete the course for a free statement of participation or digital badge if available.


This course has introduced the polar climate by showing the annual cycle of mean atmospheric surface temperature at two locations. In their respective winters, both hemispheres are extremely cold and there are very large differences in temperature between winter and summer. The low temperatures are caused by reduced energy from the Sun coupled with a high albedo. It is possible to define the Arctic using both temperature and the northern limit of tree growth. But defining the Antarctic it is more problematic, and here an ocean front that separates warm and cold waters is a sensible definition.