Raman Lidar (IMAGE) DOE/Pacific Northwest National Laboratory Caption Researchers on the Atmospheric Radiation Measurement Program use the Raman lidar (RL) to measure aerosol backscatter and water vapor mixing ratio. at the Southern Great Plains site. Pacific Northwest National Laboratory is part of the Atmospheric Radiation Measurement Program. Credit Courtesy of Pacific Northwest National Laboratory. Usage Restrictions Image courtesy of Pacific Northwest National Laboratory. Use of image shall not claim any expressed or implied affiliation with, or endorsement by, Battelle Memorial Institute, Pacific Northwest National Laboratory or the U.S. Department of Energy. 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.