6.2.7—Climate change models
- Syllabus
- First assessment 2026
- Objective
- 6.2.7
- Level
- HL
Draw the Feedback, Not Just the Climate Fact
A feedback is a change in output that alters the original input or process; positive amplifies, negative dampens.
Use input → process → output → feedback. Less ice lowers albedo and increases absorbed sunlight; warming can thaw permafrost and release methane, adding forcing. Label sign, not just sequence.
Ice loss → darker ocean → more absorbed energy → further ice loss is positive feedback.
No. It means the initial change is amplified; the outcome can be harmful or helpful depending on context.
A correlation or chain is not a feedback until the output returns to alter the system.