Earth Systems Collapse
Climate Change Impacts Exceeding Projections
A tipping point is a critical threshold beyond which a system reorganises, often abruptly and/or irreversibly and a tipping element is an Earth system component that is susceptible to a tipping point. Key tipping elements include the collapse of the West Antarctic and Greenland Ice Sheets, the melting of the Arctic Permafrost, the collapse of the Atlantic Meridional Overturning Circulation and the dieback of the Amazon Forest. ....
The crossing of climate system tipping points may lead the climate to change regionally or globally, both by substantially affecting the Earth system and as a result of tipping cascades, leading to potentially catastrophic impacts. Tipping points impacts will also cascade through socio-economic and ecological systems over timeframes that are short enough to defy the ability and capacity of human societies to adapt, leading to severe effects on human and natural systems.
Organisation for Economic Cooperation and Development (OECD) Dec 2022
Note: Global map of candidate tipping elements of the climate systems and potential tipping cascades. Arrows show the potential interactions among the tipping elements that could generate tipping cascades, based on expert elicitation.
Impacts Happening Ahead of Projections or Greater than Projections, Bruce Melton, May 2023
Counting the Cost of Climate Change, Christian Aid, 2022
Christian Aid identifies 20 of the most destructive climate disasters of the year. The ten most financially costly events all had an impact of $3 billion or more. Most of these estimates are based only on insured losses, meaning the true financial costs are likely to be even higher, while the human costs are often uncounted. Among them is Hurricane Ian which struck the US and Cuba in September costing $100 billion and displacing 40,000 people. The drought in Europe heatwave in Europe cost $20 billion while floods in Pakistan killed more than 1,700 people, displaced a further 7 million, and according to World Bank estimates caused $30 billion in economic damage. Due to the difficulty of obtaining insurance, only $5.6 billion of these losses were covered.
The NOAA National Centers for Environmental Information (NCEI) update to its 2022 Billion-dollar disaster report confirming another intense year of costly disasters and extremes throughout much of the United States. 2022 tied 2017 and 2011 for the third highest number of billion-dollar disasters. 2022 was also third highest in total costs (behind 2017 and 2005), with a price tag of at least $165.0 billion.
2022 was also deadly; the18 billion-dollar disasters of 2022 caused at least 474 direct or indirect fatalities—the 8th most disaster-related fatalities for the contiguous U.S. since 1980.
The U.S. has sustained 355 weather and climate disasters since 1980 where overall damages/costs reached or exceeded $1 billion (including CPI adjustment to 2023). The total cost of these 355 events exceeds $2.540 trillion.
Extreme Event Attribution was assessed by the US National Academy of Sciences to yield reliable estimates of changing risks of extreme weather casued by climate change. These analyses are carried out by The World Weather Attribution (WWA) initiative, a collaboration among climate scientists at Imperial College London in the UK, KNMI in the Netherlands, IPSL/LSCE in France, Princeton University and NCAR in the US, ETH Zurich in Switzerland, IIT Delhi in India, and climate impact specialists at the Red Cross / Red Crescent Climate Centre (RCCC) around the world.
The Net Zero Tracker aims to increase transparency and accountability of net zero targets pledged by nations, states and regions, cities, and companies. They collect data on targets set and on many factors that indicate the integrity of those targets — essentially, how serious the entity setting the target is about meaningfully cutting its net emissions to zero. Net Zero Tracker is a collaboration among four organisations:
The Energy & Climate Intelligence Unit (ECIU), a non-profit organisation supporting informed debate on energy and climate change issues in the UK.