Kevin Knupp, National Science Foundation (IMAGE) U.S. National Science Foundation Caption Atmospheric scientist Kevin Knupp works on a lap-top connected to a radiosonde system. Credit Kevin Knupp 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.