PYRocumulonimbus EXperiment (PYREX) (IMAGE) Naval Research Laboratory Caption Pyrocumulonimbus mission overview, including a two-platform airborne configuration that will provide remotely sensed and in situ measurements for the full spectrum of fire and pyroconvection from the surface to the stratosphere. Credit U.S. Naval Research Laboratory Usage Restrictions No restrictions. License Public Domain 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.