FYI social commentary by chris jordan:

current work

Snow Cover:

Snow, Water Resources and Climate Change

SOCC: Snow Synopsis - Is Snow Cover Changing in Canada?

Permafrost:

Most of Arctic's Near-Surface Permafrost may Thaw by 2100 - News Release

Freshwater Website: Permafrost (Table of Contents)

Permafrost

Sea Ice:

How does Arctic sea ice form and decay - Wadhams

Sea Ice Overview