Richard Wehr, University of Arizona (IMAGE) University of Arizona Caption The paper's first author, Richard Wehr, is working on a flux tower monitoring the Harvard Forest Environmental Measurements Site. Credit Richard Wehr Usage Restrictions This visual may only be used in conjunction of reporting/posting of this news release. Credit must be stated as indicated. 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.