MEPC79/7/20 Paper - Climate Science, Cascading Tipping Points, the Initial IMO GHG Strategy, and urgent action on shipping to reduce climate risks A(20)203
Our climate is changing. These changes are already affecting every inhabited region across the globe. The headline conclusions from the first of three Working Group reports contributing to the United Nations’ Intergovernmental Panel on Climate Change’s (IPCC) 6th Assessment Synthesis Report (due to be published in 2023) carry a clear message:
"Human-caused climate change is unequivocal, its size and rate is unprecedented, and It’s already causing weather and climate extremes across every inhabited region."
The Physical Science Basis report, which pulls together the findings from more than 14,000 peer-reviewed studies, indicates that the Paris Agreement limits of 1.5°C and 2°C will be passed in the 2030s and 2050s if emissions don’t immediately peak and rapidly decline over the next few decades. It warns that global heating exceeding 1.5°C could be reached in the early 2030s and multiple climate tipping points could be triggered by further warming.