The Intergovernmental Panel on Climate Change (IPCC) is the United Nations body for assessing the science related to climate change. It provides regular assessments of the scientific basis of climate change, its impacts and future risks, and options for adaptation and mitigation.
One of their recent assessments, the "Global Warming of 1.5 °C" report, provides numbers defining the world's global CO2 emission budget. This budget represents the amount of CO2 emissions the world is allowed to emit in order to limit the global temperature rise to 1.5 °C above pre-industrial levels. For a two-thirds chance of limiting warming to 1.5°C, this budget is 420 GtCO2. For a fifty-fifty chance of limiting warming to 1.5 °C the available budget is around 580 GtCO2.
The budget is calculated for the start of 2018.
The tons/sec as shown in the clock are calculated from the anual CO2 emissions of 2017.
“One of the key messages that comes out very strongly from this report is that we are already seeing the consequences of 1°C of global warming through more extreme weather, rising sea levels and diminishing Arctic sea ice, among other changes,” said Panmao Zhai, Co-Chair of IPCC Working Group I.
The Paris Agreement aims to limit global warming to 2°C, 0.5°C more than mentioned in the IPCC report. Some scenarios comparing the impact of a 1.5°C and a 2°C increase:
A complete list of impacts when missing the 1.5 °C goal from the IPCC report: Summary for Policymakers
Extinction Rebellion is an international movement that uses non-violent civil disobedience in an attempt to halt mass extinction and minimise the risk of social collapse.
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