Tropical cyclones that rapidly intensify when passing over marine heatwaves can become “supercharged”, increasing the...
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Carbon Brief
Marine heatwaves ‘nearly double’ the economic damage caused by tropical cyclones
Abatify Summary
Nature & Climate Perspective
**Marine heatwaves act as thermal accelerators that exacerbate tropical cyclone intensity, causing catastrophic degradation to coastal Blue Carbon ecosystems and marine biodiversity. **
- Thermal stress from marine heatwaves leads to mass coral bleaching and the collapse of seagrass meadows, undermining critical natural storm surges and coastal protection.
- Rapidly intensifying storms accelerate coastal erosion and the physical destruction of LULUCF-related carbon stocks, particularly in mangrove and salt marsh habitats.
- The compound impact of heat stress and physical storm damage reduces the long-term resilience of marine biomes, making carbon sequestration outcomes increasingly volatile.
Market & Policy Outlook
**The doubling of economic damage from supercharged cyclones forces a recalibration of climate risk pricing and challenges the 'permanence' criteria of the ICVCM Core Carbon Principles. **
- Increased financial losses highlight the systemic risk to infrastructure, necessitating more stringent physical risk disclosures under Scope 3 and TCFD frameworks.
- Heightened reversal risks from extreme weather events pressure the ICVCM to mandate larger buffer pools for nature-based credits to maintain market integrity.
- The escalation of climate-induced economic damage reinforces the urgency for Article 6.2 and 6.4 mechanisms to address 'Loss and Damage' for vulnerable coastal jurisdictions.
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