22 - Rising Sea Levels

22 Source: IPCC An extreme but not impossible scenario 50 cm 80 cm 20 cm Global mean sea level rise from 1900 Sea Level Rise
Set 1 www.climatefresk.org Since 1900, sea level has risen by 20 cm. This is caused by the thermal expansion of ocean waters and the melting of glaciers and ice sheets. 22

3
Causes

Melting Glaciers

Melting Glaciers

A melting of 100 gigatons of ice per year is equivalent to about 0.28 mm per year of mean sea level rise. Thus, 15 to 35% of sea level rise is linked to the melting of glaciers, according the IPCC scenarios. 30% to 35% is linked to the expansion of water. The remainder is linked to the melting of the ice caps.
Rising Water Temperature

Rising Water Temperature


Melting Ice Sheets

Melting Ice Sheets


1
Consequence

Marine Submersion

Rising Sea Levels


2
Wrong causes

Melting Sea Ice

Melting Sea Ice

This it the trap in which participants can fall while playing with cards set n1. Therefore, do not ask them to read the cards from the beginning. Once they have put them in place, ask them to read the texts.
Disruption of the Water Cycle

Disruption of the Water Cycle

No, more rain is not going to cause the oceans to overflow! This is a rare mistake to be made, but if it happens to you, ask the players where rainclouds come from...
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