Figure 1 (IMAGE) Institute for Basic Science Caption Illustration of atmospheric Hadley cell under present-day conditions (left). Subtropical warming leads to a weakening of the Hadley cell (right), less clouds in most of the tropics, a reduction in the upwelling of cold ocean water, and a resulting increase in tropical temperatures. This process explains the accelerated tropical warming found in climate models in response to increase greenhouse gas emissions. Credit Elke Zeller Usage Restrictions Please indicate the credit. 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.