Runaway Climate

Préface

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Auteur

Steven Earle, PhD, has worked as a geologist and developed and taught university-level courses in earth sciences and climate change for over four decades. He is the author of the IPPY award-winning A Brief History of the Earth's Climate and the widely used post-secondary textbook Physical Geology, now in its second edition. A dedicated community activist, he spearheads local engagement with climate change solutions including low-carbon transportation initiatives, heating systems, and land stewardship. Steven and his family live in a nearly net-zero house on a small sustainable farm on Gabriola Island, BC, Canada.

Texte du rabat

56 million years ago our planet experienced rapid, intense warming known as the Paleocene Eocene Thermal Maximum, resulting in a global temperature increase of about 7°C. Runaway Climate explores the causes of this catastrophic event, its dramatic impact on life on Earth, and its stark lessons for our climate future.

Résumé

With tipping points and extreme global warming looming, the key to understanding our climate future lies in our distant past

With rising emissions, we are on track to cause rapid global warming with devastating con- sequences. But how bad could climate change get and what might it do to planet Earth and humanity?

Runaway Climate explores the causes of the Paleocene Eocene Thermal Maximum (PETM) rapid climate-heating episode, its dramatic impact on life on Earth, and lessons for our climate future.

Fifty-six million years ago our planet experienced a period of intense warming known as the PETM, resulting in a rapid global temperature increase of about 7°C. Triggered by natural geological processes over millennia and magnified by strong climate feedback loops, the PETM lasted for about 180,000 years and drastically altered life on Earth. Yet in only a few short decades we've pumped similar amounts of greenhouse gasses into the atmosphere, making the PETM an unsettlingly apt analogy for our current predicament. This deeply cautionary tale explores:

• The runaway feedbacks that pushed the PETM's climate past the tipping point
• Subsequent cascades of environmental devastationfrom plant and animal migrations to ocean acidification, extreme weather, and mass extinctions
• A sobering vision of life on hothouse Eartha hostile world of desertification, sea-level rise, climate refugees, and agricultural collapse
• The urgent need for decisive individual and collective actions to slash carbon emissions, stabilize the climate, and undertake a rapid transition to a cleaner and healthier future.
  Scientifically rigorous, yet accessible to a wide audience, Runaway Climate is essential reading for every- one committed to understanding and taking action on the climate emergency.

Contenu

Synopsis
Acknowledgments
Preface

Part I What Happened in the Past?
Chapter 1: The Bighorn Basin
Chapter 2: The Late Paleocene World
Chapter 3: Understanding Past Climates
Chapter 4: Changes in the Oceans During the PETM
Chapter 5: Changes on Land During the PETM
Chapter 6: What Caused the PETM Runaway Climate?
Chapter 7: What Is Similar Now and What Is Different?

Part II Where We Are Heading If We Don't Change Course
Chapter 8: How the Oceans Might Change Under PETM Conditions
Chapter 9: How the Land Might Change Under PETM Conditions
Chapter 10: Where Will Everyone Go?
Chapter 11: What Do We Need to Do Now?

Abbreviations
Appendix
Endnotes
Index
About the Author
A Note About the Publisher