Zero by 2050 or 2030? 1.5°C or 2°C?
This briefing paper explores how IPCC carbon budgets underestimate current and future warming, omit important climate system feedback mechanisms, and make dangerous assumptions about climate risk-management.
“Where we are today at just over 500 parts per million of carbon dioxide, methane and NOx [greenhouse] gases, we have already passed the tipping point [for systemic Arctic and Greenland systems change], we are already into a negative carbon budget. There is much discussion about how much carbon budget there is left to burn, and there is none, we have already burned far too much and we need to go into reverse.”
Sir David King
Former Chief Scientific Advisor, United Kingdom
Download the paper by David Spratt & Ian Dunlop
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