PDO and ENSO Sea Surface Temperature Anomalies Control Grassland Plant Production across the United States Great Plains

Stephen J Del Grosso, USDA -ARS, Fort Collins, United States, William J Parton, Colorado State University, Natural Resource Ecology Laboratory, Fort Collins, United States, William Kolby Smith, University of Arizona, Tucson, AZ, United States and Maosi Chen, Colorado State University, UV-B Monitoring and Research Program, Natural Resource Ecology Laboratory, Fort Collins, United States