NASA's Atmospheric Tomography Mission (ATom) studies the impact of human-produced air pollution on greenhouse gases and on chemically reactive gases in the atmosphere. Two specialized instruments designed and built by ACOM scientists are measuring gases on the DC-8 aircraft with the ATom field campaign:

• CCD Actinic Flux Spectroradiometers (CAFS): Samuel Hall and Kirk Ullmann.
• Trace Organic Gas Analyzer (TOGA): Eric Apel, Lizzy Asher, Alan Hills, and Rebecca Hornbrook.

ATom-4 will conduct flight operations from Palmdale, California during April and May 2018.