The Working Group I (WG I) of the Intergovernmental Panel on Climate Change has released today the report «Climate Change 2021: the Physical Science Basis». This report is the most up-to-date physical understanding of the climate system and climate change.
Here its main findings:
– It is indisputable that human influence has warmed the climate system, raising global surface temperature.
– Greenhouse gas emissions from human activities are responsible for approximately 1.1°C of warming since 1850-1900.
– Averaged over the next 20 years, global temperature is expected to reach or exceed 1.5°C of warming.
– Limiting warming to 1.5°C can only be achieved through immediate and significantly scaled-up reductions.
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