Multi-Path Fusion: A Hierarchical Machine Learning Approach for Combining Diverse Data Sets for a Forest Monitoring New Observing System. - James MacKinnon; David J. Harding; Mark Moussa; Matt Brandt; Paul M. Montesano; Mark L. Carroll; Randolph H. Wynne; Valerie A. Thomas; Fred Huemmrich; K. Jon Ranson (IGARSS, 2023)