Info

Snow cover

Decreasing in most regions, especially in spring (WGI AR4, Chapter 4, Executive summary).

Glaciers

Decreasing almost everywhere (WGI AR4, Chapter 4, Section 4.5).

Permafrost

Thawing between 0.02 m/yr (Alaska) and 0.4 m/yr (Tibetan Plateau) (WGI AR4 Chapter 4 Executive summary; this report, Chapter 15, Section 15.2).

Surface waters

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