Cryosphere- Recent Change Flashcards
1
Q
When was the last glacial maximum
A
Approx 20,000 years ago
2
Q
Oxygen levels are a proxy for
A
Temperature
3
Q
What impact do volcanic eruptions have on overall forcing and albedo
A
Reduce albedo
Small impact on overall forcing
4
Q
What part of permafrost is measured to see how temperatures are changing
A
The active layer
5
Q
3 types/layers of permafrost
A
Continuous
Discontinuous
Sporadic
6
Q
How much has the thickness of frozen ground decreased by since the 1930s
A
32cm
7
Q
Is sea ice increasing/decreasing in the Antarctic and arctic
A
Increasing in antarctic
Decreasing in arctic
The decreases in the arctic are outweighing the increases in the Antarctic
