Temperatures Over Land When 2°C Barrier Reached (image) University of New South Wales Share Print E-Mail Caption The increase in regional average temperatures around the world when global average temperatures reach 2°C above pre-industrial levels. Credit (From authors' Nature paper, Allowable CO2 emissions based on regional and impact-related climate targets). Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.