# Arctic

## PREFIRE (Polar Radiant Energy in the Far-InfraRed Experiment)

Our group leads the NASA Earth Venture-Instrument (EV-I) Polar Radiant Energy in the Far-InfraRed (PREFIRE) mission. In collaboration with the Jet Propulsion Laboratory, University of Michigan, University of Colorado, and Blue Canyon Technologies, PREFIRE provides the first systematic measurements of the Earth’s far infrared emission spectrum and utilizes them to understand thermal energy balance in polar regions. The far infrared, defined as wavelengths longer than 15 micrometers, accounts for more than 60% of the thermal emission at polar latitudes.