1. The Permian Triassic Extinction Event
The role of Global Warming in the PTEE
Evelin Collado and Matthew Moline

2. Introduction 251 million years ago
Up to 92% of species became extinct.
What role did Global Warming play in this crisis?

3. PTEE Mechanisms CO2 Increase Ocean Circulation Storm Activity Anoxia
Volcanism
Hypercapnia
Methane Release
Bolide Impact

4. Comparison Early Permian Late Permian Early Triassic Modern Era
Atmospheric CO2
350 ppm
3550 ppm
11,360 ppm
385 ppm
Annual CO2 increase
0.0 ppm
.016 ppm
.039 ppm
2.0 ppm
Average Temperature
15°C
25°C
30°C
14.54°C
Avg. Temp. Increase
0°C
5.0 x 10-5°C
2.5 x 10-5°C
2.0 x 10-2°C
Early Permian and Modern Era are similar
Late Permian: Siberian Traps erupt
Early Triassic: Additional Kill Mechanisms

5. Conclusion
Global Warming was a critical component of the most profound extinction event of the last 600 million years.
HOWEVER
Atmospheric CO2 is currently increasing 100x faster
than during the PTEE
Temperature is currently increasing 660x faster than during the PTEE