Number of Tropical Cyclones (image) University of Hawaii ‑ SOEST Share Print E-Mail Caption This image shows the projected change in number of tropical cyclones per year by the last quarter of this century. The green stippling indicates statistical significance at the 99 percent confidence level. Credit Hiroyuki Murakami, Nature Climate Change 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.