Southwest Monsoon (IMAGE) University of Arizona Caption Monsoon rainstorms bring moisture from the tropics to the arid lands of the Desert Southwest, supporting a landscape that is much more biodiverse than most other deserts in the world. Credit Deborah Lee Soltez/Public Domain 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.