Account for the differences in the climate between summer and winter in the tundra?

Question

Account for the differences in the climate between summer and winter in the tundra?

Answer 1

sun.  in the summer.

or no sun, in the winter.

and more CO2 retains more of the summer heat.

melting the permafrost.

kind'a like putting a blanket over you when you get into bed.

http://www.soilsalaska.com/Pictures/perm...

Answer 2

Different climates during seasons are due to the amount of sunlight. During the winter, no ultraviolet radiation is coming from the sun to warm the surface. So temperatures remain extremely low. During the Summer, the sun is shining 24hours a day so ultraviolet radiation is constantly reaching the surface so the surface will warm up.