Black spruce being consumed by flames during the FROSTFIRE prescribed burn.		NCAR's Thermacam infrared videocamera observes the dynamics of a crown fire.
Click HERE to learn more about NCAR's research during FROSTFIRE an NSF-sponsored experiment to study the role of fire in Alaska's boreal forest ecosystem.
A crown fire racing up Helmer's Ridge, as seen from Caribou Peak.		The instrumented USFS Piper Navajo circles the fires below.