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The recent report by the UN Intergovernmental Panel on Climate Change (IPCC) highlights the need for carbon dioxide removal (CDR) to reach net negative CO2 emissions. What is carbon dioxide removal (CDR)? Explain the various methods to achieve CDR and discuss the challenges involved.( 200 Words)
Introduction: Carbon Dioxide Removal (CDR) refers to a set of methods and technologies that remove CO₂ from the atmosphere and store it long-term. According to the IPCC, CDR is essential to achieve net negative emissions and meet global climate targets. Explanation of CDR:CDR includes natural, technRead more
Introduction: Carbon Dioxide Removal (CDR) refers to a set of methods and technologies that remove CO₂ from the atmosphere and store it long-term. According to the IPCC, CDR is essential to achieve net negative emissions and meet global climate targets.
Explanation of CDR:CDR includes natural, technological, and marine-based approaches. It does not replace emission reduction but works alongside it to balance unavoidable emissions. The IPCC’s 2024 report emphasizes its critical role in limiting warming to 1.5°C.
Methods of CDR:
1. Natural Methods:
Afforestation/Reforestation: Planting trees to absorb CO₂.
Peatland Restoration: Re-wetting peatlands to store carbon in soil.
Biochar: Converting organic waste into carbon-rich material for soil.
2. Technological Methods:
BECCS: Bioenergy with Carbon Capture and Storage.
DACCS: Direct Air Carbon Capture and Storage using machines.
3. Marine-Based Methods:
Coastal wetland restoration
Ocean fertilization to enhance phytoplankton growth.
Challenges of CDR: Land Competition with agriculture (afforestation, BECCS)
Biodiversity loss from single-species plantations or ocean fertilization
Cost and energy use, especially in DACCS
Risk of re-emission if methods are poorly executed
Conclusion: CDR is essential for achieving net-negative emissions but must complement emission reductions. Strong policy, funding, and environmental safeguards are vital for its success.
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