A new analysis by leading scientists, including renowned climatologist James Hansen, concludes that holding global warming to two degrees Celsius — the fallback target of the Paris climate accord — is now 'impossible.' The study, published in the journal 'Environment: Science and Policy for Sustainable Development,' finds Earth's climate is more sensitive to rising greenhouse gas emissions than previously thought. The authors argue that the amount of greenhouse gases already in the atmosphere means increased warming is now guaranteed, with temperatures projected to stay at or above 1.5C in the coming years, before rising to around 2.0C by 2045. They also warn that the shutdown of the Atlantic Meridional Overturning Circulation (AMOC) within the next 20-30 years is likely, which could lead to major problems including sea level rise.
WASHINGTON, D.C. — Holding long-term global warming to two degrees Celsius — the fallback target of the Paris climate accord — is now 'impossible,' according to a stark new analysis published by leading scientists.Led by renowned climatologist James Hansen, the paper appears in the journal 'Environment: Science and Policy for Sustainable Development' and concludes that Earth's climate is more sensitive to rising greenhouse gas emissions than previously thought.
They estimated polar ice melt and freshwater injection into the North Atlantic will trigger the shutdown of the Atlantic Meridional Overturning Circulation within the next 20–30 years.The current brings warmth to various parts of the globe and also carries nutrients necessary to sustain ocean life.Its end 'will lock in major problems including sea level rise of several meters -- thus, we describe AMOC shutdown as the 'point of no return,'' the paper argued.
CLIMATE CHANGE GLOBAL WARMING PARIS AGREEMENT AMOC SCIENTISTS
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