Drizzle Equals Fizzle (IMAGE) Columbia Climate School Caption A new study finds that when rain comes down mainly as drizzle, yields of major crops are depressed; when downpours are heavier, yields rise, up a point. Yields go down severely with the most extreme rainfalls, but these are quite rare. Length of bars represents impact on crops per hour. Heavy rainfall is projected to increase more than extremes in the future, giving a boost to crops. Credit Graphic by Corey Lesk. Usage Restrictions Credit must be given. 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.