Saildrone (IMAGE) University of Washington Caption Saildrone uncrewed surface vehicles (USVs), like the one pictured here, made measurements of atmospheric cold pools in remote regions of the tropical Pacific. Credit Saildrone, Inc. Usage Restrictions With credit 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.