19 - Teuz an togennoù skorn
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These illustrations represent the gain or loss of mass of the caps, indicated in centimetres of water per year (cm of water/year) and measured gravimetrically. In blue the mass gain (because it snows more) and in red the losses (glaciers flow faster towards the ocean).
1Cause
2Consequences
Freshwater coming from the melting of Greenland may threaten the thermohaline circulation.
1Other possible cause
It's a bit technical, but the blue part of the map of Antarctica on card 19 represents a gain in mass due to an increase of precipitations. The red part represents a loss in mass. In total, Antarctica is losing mass.