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A climate target, climate goal or climate pledge is a measurable long-term commitment for climate policy and energy policy with the aim of limiting the climate change. Researchers within, among others, the UN climate panel have identified probable consequences of global warming for people and nature at
To achieve this temperature goal, greenhouse gas emissions should be reduced as soon as, and by as much as, possible. [2] To stay below 1.5 °C of global warming, emissions need to be cut by roughly 50% by 2030. This figure takes into account each country's documented pledges or NDCs. [3] NDCs embody efforts by each country to reduce national ...
In one version of the A2 scenario, emissions were as the IPCC projected. In the other version of A2, Hope reduced the IPCC's projected emissions by a half (i.e., 50% of the original A2 scenario). In his integrated assessment model , both of these versions of the A2 scenario lead to almost identical estimates of marginal climate damages (the ...
to confront the global climate emergency. ... Today's interim report from the UNFCCC [1] shows governments are nowhere close to the level of ambition needed to limit climate change to 1.5 degrees and meet the goals of the Paris Agreement. The major emitters must step up with much more ambitious emissions reductions targets for 2030 in their Nationally Deter
[72] [73] For example, the UNFCCC invited the IPCC to prepare a report on global warming of 1.5 °C. The IPCC subsequently released the Special Report on Global Warming of 1.5 °C (SR15) in 2018. [74] The report showed that it was possible to keep warming below 1.5 °C during the 21st century. But this would mean deep cuts in emissions.
The four RCPs – originally RCP2.6, RCP4.5, RCP6, and RCP8.5 – are labelled after the expected changes in radiative forcing values from the year 1750 [24] [25] to the year 2100 (2.6, 4.5, 6, and 8.5 W/m 2, respectively). [26] [27] [28] The IPCC Fifth Assessment Report (AR5) began to use these four pathways for climate modeling and research ...