While all countries committed under the Paris Agreement to limit global temperature rise to 1.5˚C-2˚C (2.7-3.6˚ F), major questions remained: How can the world achieve this temperature goal? And what happens if it doesn’t?
The world’s leading climate scientists, the Intergovernmental Panel on Climate Change (IPCC), answered these questions and more in their latest report released today. Nearly 100 scientists analyzed how the world can achieve the 1.5˚C goal, as well as impacts associated with this rise in temperature.
Here are eight findings:
- Limiting warming to 1.5˚C requires major and immediate transformation.
- The scale of the required low-carbon transition is unprecedented.
- “Limiting warming to 1.5˚C” can mean different things—with different results.
- A 1.5˚C limit to warming is not safe for all…
- …but risks associated with warming are substantially lower at 1.5˚C than 2˚C.
- Emissions will need to reach net-zero around mid-century.
- All 1.5˚C emissions pathways rely upon carbon removal to some extent.
- Everyone – countries, cities, the private sector, individuals — will need to strengthen their action, without delay.
Turning Evidence into Action
There’s no sugarcoating it: Keeping warming to 1.5˚C will be hard. Really hard. But the IPCC report also makes it clear that the world has the scientific understanding, the technological capacity and the financial means to tackle climate change. Now what we need is the political will to precipitate the unprecedented concerted actions necessary to stabilize temperature rise below 1.5 C.
BBC environment correspondent Matt McGrath outlines five key takeaways from one of the most important reports on rising temperatures issued by the Intergovernmental Panel on Climate Change. Their study, on the impacts and possible methods of keeping temperatures from warming by more than 1.5C, has just been launched in South Korea.
It is 'seriously alarming' but surprisingly hopeful
towermonkey wrote: Has the IPCC ever been right about one of their predictions? I mean without altering the data sets to make it appear that they were right of course.
Since we have been periodically posting updates (e.g. 2009, 2010, 2011, 2012, 2015, 2016) of model output comparisons to observations across a range of variables, we have now set up this page as a permanent placeholder for the most up-to-date comparisons. We include surface temperature projections from 1981, 1988, CMIP3, CMIP5, and satellite products (MSU) from CMIP5, and we will update this on an annual basis, or as new observational products become available. For each comparison, we note the last update date.