The Symbiotic Breakdown
Corals depend on symbiotic zooxanthellae for up to 90% of their energy. When water temperatures exceed the normal summer maximum by just 1°C for over four weeks, corals expel these algae, leading to starvation.
Degree Heating Weeks (DHW) Calculator
Data & Modeling
| DHW Threshold | Expected Impact |
|---|---|
| 0 - 4 | Minimal to no bleaching |
| 4 - 8 | Significant bleaching likely |
| > 8 | Widespread bleaching and mortality |
Common Misconceptions
A frequent error in media interpretation is confusing localized transient effects with global secular trends. The figures demonstrated here isolate the multi-decadal signal from seasonal noise.
Frequently Asked Questions
Is this reversible?
On human timescales, highly unlikely. The thermal inertia of the ocean means impacts will persist for centuries even if emissions cease immediately.
How accurate are these figures?
Based on the latest AR6 synthesis and prevailing primary literature. Uncertainties are inherent in coupled non-linear climate models.