Arctic Cloud Sensitivity (image) University of Utah Share Print E-Mail Caption A rare case of forest fire smoke interacting with clouds in the Arctic in July 2012. Contour lines indicate carbon monoxide concentrations in the atmosphere. Credit MODIS/NASA 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.