Global temperature map (IMAGE) University of Leicester Caption Map showing global temperature anomaly in degrees Celsius caused by doubling the concentration of carbon dioxide over a century. Credit Valerio Lucarini and Mickaël Chekroun Usage Restrictions Use only with credit. License Original content 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.