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IB DP ESS — Topic 6: Atmosphere and Climate Change | SL & HL | Paper 1 & Paper 2
🎯 Learning Intentions By the end of this note, you will be able to:
- Define climate change adaptation and distinguish it from climate change mitigation using IB-aligned ESS terminology.
- Explain the difference between hard and soft adaptation strategies and the conditions under which each is appropriate.
- Describe a range of adaptation strategies operating at local, national, and international scales, including examples from both LEDCs and MEDCs.
- Analyse the effectiveness of specific adaptation strategies using ESS analysis parameters: scale, sustainability, trade-offs, and multiple perspectives.
- Evaluate the limitations of adaptation as a response to climate change, including the concept of adaptation limits and maladaptation.
- Discuss the role of indigenous knowledge, community-based adaptation, and international climate finance in supporting vulnerable populations.
- Discuss contrasting worldviews — ecocentric, technocentric, and anthropocentric — in relation to the choice and design of adaptation strategies.
Real-World Context & Relevance
In 2022, Pakistan experienced one of the most catastrophic climate disasters in recorded history. Unusually intense monsoon rains — amplified by a warming atmosphere that holds approximately 7% more moisture per degree Celsius of warming — submerged one-third of the country, displacing over 33 million people and causing economic losses estimated at US$30 billion (IPCC, "Climate Change 2022: Impacts, Adaptation and Vulnerability"). The floods destroyed 2 million homes, wiped out 45% of the country's standing crops, and killed over 1,700 people. Pakistan contributes less than 1% of global greenhouse gas emissions, yet it ranks among the ten countries most vulnerable to climate impacts.
This stark injustice — where those least responsible for climate change suffer its worst consequences — defines the central challenge of climate change adaptation. Unlike mitigation, which aims to reduce the causes of climate change by cutting greenhouse gas emissions, adaptation accepts that a degree of climate change is already locked in and asks a different question: how do we adjust our societies, economies, and ecosystems to survive and function in a changing climate? The answer is not simple. Adaptation strategies range from building sea walls in the Netherlands to restoring mangrove forests in Bangladesh, from redesigning crop varieties in sub-Saharan Africa to relocating entire Pacific Island communities. Each approach carries trade-offs, costs, and limits.
🌍 Why This Matters Even under the most optimistic emissions scenarios, the IPCC projects that global average temperatures will exceed 1.5°C above pre-industrial levels by the early 2030s, making adaptation an urgent, unavoidable necessity for billions of people. Understanding adaptation — its strategies, effectiveness, equity dimensions, and limits — is central to any serious engagement with climate change policy and environmental sustainability.
Core Concepts & Definitions
To understand adaptation, we must first appreciate why it is necessary even if all emissions stopped today. The carbon dioxide already in the atmosphere has committed the Earth to further warming due to the thermal inertia of the oceans — the slow uptake and release of heat by large water bodies. This means that even in a world of perfect mitigation, communities around the world would still face rising seas, shifting rainfall patterns, more intense storms, and changing growing seasons for decades to come. Adaptation is therefore not a failure of mitigation — it is a parallel and equally urgent response.
📖 Key Definition — Climate Change Adaptation