 The project was dropped after it was discovered that eyewall replacement cycles occur naturally in strong hurricanes, casting doubt on the result of the earlier attempts.Today, it is known that silver iodide seeding is not likely to have an effect because the amount of supercooled water in the rainbands of a tropical cyclone is too low.Other approaches have been suggested over time, including cooling the water under a tropical cyclone by towing icebergs into the tropical oceans.