Mount Hood Plumes (IMAGE) University of Washington Caption This plume escaping from a lake near the summit of Oregon’s Mount Hood, seen in May 2021, is not captured by satellite observations. Ice core analysis shows that such plumes have a much larger effect on the level of aerosols in the atmosphere than previously believed. Credit Ursula Jongebloed/University of Washington Usage Restrictions With credit License Original 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.