Average Cyclone-Induced Surface Cooling (IMAGE) Purdue University Caption This map illustrates the average cyclone-induced surface cooling of the upper ocean. Matthew Huber, a Purdue professor of earth and atmospheric sciences, and Ryan Sriver, a Purdue graduate student, found evidence that tropical cyclones play an important role in ocean circulation that transports heat and maintains the climate of North America and Europe. Their research suggests that tropical cyclones and hurricanes cool the tropics and act as a thermostat for the area. Credit Purdue graphic/Huber laboratory 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.