Around 7-9 billion tonnes of CO2 per year will need to be removed by mid-century from the atmosphere if the world is to meet the 1.5°C Paris Agreement target, according to University of Oxford research.
Currently just 2 billion tonnes per year are being removed by CO2 removal and novel technologies – including biochar, enhanced rock weathering, direct air carbon capture and storage (DACCS) and bioenergy with carbon capture and storage (BECCS) – contribute 1.3 million tonnes, less than 0.1% of the total, while permanent methods account for less than 0.05%, according to the annual State of Carbon Dioxide Removal report (second edition) which features research from of over 50 international experts.
A diverse range of CDR methods must be rapidly scaled up to address climate change in line with the Paris Agreement, say the authors. CDR has undergone rapid growth in research, public awareness and start-up companies yet there are now signs of a slowdown in development across multiple indicators.
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