Scenario 3: Howmight the berm help slow polar ice melt as atmospheric C02 causes temperature increases? (high C02, with berm) This modelis a revision of your Lesson 5 model. Hypothesis: If a berm is built on top of the fjord sill in front of the Ilulissat Glacier, then... ...because:

The berm might help slow polar ice melt as atmospheric CO2 causes temperature increases in several ways:

1. Physical Barrier: The berm acts as a physical barrier, preventing warm ocean currents from reaching the glacier. This reduces the amount of warm water that comes into direct contact with the ice, slowing down the rate of melting.

2. Insulation: The berm could also provide some degree of insulation, reducing the amount of heat that the glacier absorbs from the surrounding environment. This could further slow the rate of melting.

3. Ecosystem Changes: The presence of a berm could potentially alter local ecosystems in ways that further reduce melting. For example, it could encourage the growth of certain types of algae that absorb CO2 and reduce the overall temperature of the water.

4. Iceberg Calving Reduction: The berm could reduce the rate of iceberg calving (when chunks of ice break off from the edge of a glacier). This is because the berm provides a physical support to the glacier, making it less likely for pieces to break off.

Therefore, the hypothesis could be: If a berm is built on top of the fjord sill in front of the Ilulissat Glacier, then the rate of polar ice melt might decrease because the berm acts as a barrier to warm ocean currents, provides insulation, potentially alters local ecosystems, and reduces iceberg calving.