IPCC starts work on the 1.5ºC target and 6th Assessment Report

The Paris Agreement of the UN Framework Convention on Climate Change says that global temperature increase should be limited to 1.5ºC compared with pre-industrial times. The UN therefore asked the Intergovernmental Panel on Climate Change (IPCC) to provide a special report in 2018 on the impacts of global warming of 1.5ºC above pre-industrial levels and related global greenhouse gas emission pathways. The IPCC has now agreed during a meeting in April in Nairobi to prepare a special report on 1.5ºC and will start work this summer with a call for experts to scope the report.

The two accompanying tables show the different probabilities of achieving the 1.5ºC target, and the remaining carbon budgets are calculated according to the IPCC 4th Assessment Report from 2013/2014.

At the 43rd Session of the Panel in Nairobi the IPCC also agreed on a roadmap for the production and delivery of the 6th IPCC Assessment Report (AR6).  When drawing up the outlines for AR6 the IPCC decided to pay special attention to the impacts of climate change on cities and their unique adaptation and mitigation challenges and opportunities. Preparations for the main AR6 report, which is expected to be released in three working group contributions in 2020/2021 and a Synthesis Report in 2022, will start later this year. The panel also agreed to prepare two other special reports: on climate change and oceans and the cryosphere; and on climate change, desertification, land degradation, sustainable land management, food security, and greenhouse gas fluxes in terrestrial ecosystems. These will be produced as early as possible in the AR6 cycle. 

Reinhold Pape

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