Very bleak climate projection, though the article notes that meteorologist Michael Mann says take it with a salt shaker worth of salt.
‘To prevent global temperature and sea level rises after greenhouse gas emissions have ceased, and to limit the potentially catastrophic effects on Earth’s ecosystems and human society, at least 33 gigatons of carbon dioxide would need to be removed from the atmosphere each year from 2020 onward through carbon capture and storage methods, according to the authors.’
Source: Climate change study: Reducing greenhouse gases won’t stop warming