Modeling Clouds (IMAGE) University of Kansas Caption A series of images from a vertically pointing wide-angle camera showing the cloud field evolving over approximately a 2-hour period. The blue lines on the time series represent different observational estimates of cloud cover, the fraction of the sky covered by clouds. The black and gray line, and the wide gray band, show calculations of cloud cover from a number of high-resolution numerical simulations. Credit Courtesy David Mechem Usage Restrictions None License Licensed 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.