A new report warns of many risky climate feedback loops and the need for action in both research and policy. It was written by an international team of researchers, including scientists from Oregon State University (OSU) and will be published today (February 17, 2023) in the scientific journal One E
The wildfire-climate change feedback loop. Credit: Chris Wolf, William Ripple Background photo by Peter Buschmann
A new report warns of many risky climate feedback loops and the need for action in both research and policy. It was written by an international team of researchers, including scientists from Oregon State University and will be published today in the scientific journal. The report states that partly due to amplifying climate feedbacks, “a very rapid drawdown in emissions will be required to limit future warming.
Researchers from the United States and Europe listed and described 41 climate feedback loops that have major implications for the outlook on climate change. Climate feedback loops are processes that can either amplify or diminish the effects of our greenhouse gas emissions, initiating a cyclical chain reaction that keeps repeating again and again. There are many large amplifying feedbacks that accentuate warming.
The authors highlight several particularly troubling feedback loops such as the permafrost feedback wherein rising temperatures lead to permafrost thawing, which results in more carbon dioxide and methane emissions, leading to further warming. Other potentially dangerous feedbacks include drying or smoldering peatlands and forest dieback. Because these feedbacks may not yet be fully incorporated into climate models, current emissions drawdown plans could fail to adequately limit future warming.
Timothy M. Lenton of University of Exeter, Susan M. Natali and Philip B. Duffy of the Woodwell Climate Research Center, Johan Rockström and Hans Joachim Schellnhuber of the Potsdam Institute for Climate Impact Research.
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