An international research project has found human activity has been causing global warming for almost two centuries, according to a report in Phys.Org
Australian National University researcher Associate Professor Nerilie Abram. Credit: Stuart Hay, ANU
Warming is first detectable in the Arctic and tropical oceans around the 1830s, much earlier than scientists had expected.
CO2 information from ice cores shows that atmospheric CO2 levels began to rise from around 280 ppm as the 19th century began.