Cumulonimbus (image) University of Hawaii ‑ SOEST Share Print E-Mail Caption This is a three-layered cloud structure in a developing Madden-Julian Oscillation during the Indian Ocean DYNAMO field experiments (November 2011). The photo won first place in the DYNAMO photo contest. Credit Owen Shieh, University of Hawaii Usage Restrictions Not for commercial use. 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.