Update on Catastrophic Climate Change from New IPCC Report
GLOBAL WARMING OF 1.5 °C
An Intergovernmental Panel on Climate Change (IPCC) special report on the impacts of global warming of 1.5 °C above pre-industrial levels and related global greenhouse gas emission pathways, in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty.
A1. Human activities are estimated to have caused approximately 1.0°C of global
warming above pre-industrial levels, with a likely range of 0.8°C to 1.2°C. Global
warming is likely to reach 1.5°C between 2030 and 2052 if it continues to increase at
the current rate (high confidence)
B5. Climate-related risks to health, livelihoods, food security, water supply, human
security, and economic growth are projected to increase with global warming of 1.5°C
and increase further with 2°C.
C2. Pathways limiting global warming to 1.5°C with no or limited overshoot would require rapid and far-reaching transitions in energy, land, urban and infrastructure
(including transport and buildings), and industrial systems (high confidence). These
systems transitions are unprecedented in terms of scale, but not necessarily in terms
of speed, and imply deep emissions reductions in all sectors, a wide portfolio of
mitigation options and a significant upscaling of investments in those options (medium confidence).
D7. Strengthening the capacities for climate action of national and sub-national
authorities, civil society, the private sector, indigenous peoples and local communities can support the implementation of ambitious actions implied by limiting global warming to 1.5°C (high confidence). International cooperation can provide an enabling environment for this to be achieved in all countries and for all people, in the context of sustainable development. International cooperation is a critical enabler for developing countries and vulnerable regions (high confidence).