Photo of William (Bill) Christie

William (Bill) Christie

Remote Sensing Analyst
200 W.T. Weaver Blvd
Asheville, NC 28804-3454
Phone: 828-257-4370

Current Research

Co-owner and lead developer for the 'High-resolution forest disturbance mapping' ( application.  This customized forest disturbance mapping application uses freely available Google Earth Engine to access and process high-resolution (10m) and moderate (30m) satellite imagery.

Acting-SysAdmin and update development manager for the Unit’s “Water Supply Stress Index (WaSSI)” application, used internationally for hydrologic modeling and scenario-based, ecosystems services.

Research Interests

Cloud-based satellite image processsing using Google Earth Engine scripting to map and assess near-tree-crown-resolution, near-real-time and long-term forest disturbance; mapping the occurrence, severity and monitoring recovery from biotic and abiotic agents, such as from severe weather, insects and disease, wildland and prescribed fire and timber harvests.

Why This Research is Important

Our emphasis is monitoring change in eastern US forests that result from severe weather, wildland fire, logging, and from insects and disease. Our hope is to refine ways that these new capabilities can be best adapted for managers, and to improve insights about eastern US forest dynamics more fundamentally.


Masters Of Science in Geography (Remote Sensing), 1984
University of South Carolina, Columbia, SC

Awards and Recognition

Director’s Award for Excellence in Science Delivery, 2019
Forest Service, Southern Research Station, for “High-Resolution Forest Mapping (HiForm)” project mapping and outreach to State and Federal partners ( Steve Norman, Ph.D., Research Ecologist and William Christie, RS/GIS Analyst.
Director’s Choice Award: Benefits to the Public, 2019
Forest Service, Southern Research Station, for “Improving hurricane damage assessments with new satellite technology and outreach” ( Steve Norman, Ph.D., Research Ecologist and William Christie, RS/GIS Analyst.


Research Highlights

Improving Hurricane Damage Assessments with New Satellite Technology and Outreach (2019)
SRS-2019-37 Recent advances in satellite technology and collaborative exchange between USDA Forest Service researchers and state forestry agencies have given forest managers greatly improved insights into hurricane damage.