Polar Radiant Energy in the Far InfraRed Experiment
Revealing new aspects of the Arctic climate by measuring the full spectrum of polar radiant energy.Image courtesy of the Earth Science and Remote Sensing Unit, NASA Johnson Space Center
PREFIRE makes the first full spectral measurements of Far InfraRed (FIR) radiation, revealing the full spectrum of Arctic radiant energy. It fills a major gap in our knowledge of the Arctic energy budget and the role of FIR radiation in Arctic warming, sea ice loss, ice sheet melt, and sea level rise.
The Arctic is Earth’s thermostat. It regulates the climate by venting excess energy received in the tropics.
Nearly 60% of Arctic emission occurs at wavelengths longer than 15 μm (FIR) that have never been systematically measured.
PREFIRE quantifies spatial and temporal variability in spectral FIR emission and the atmospheric greenhouse effect.
Two 6U CubeSat spacecraft in two different 470-650 km altitude, near-polar (82°-98° inclination) orbits, each with a Heritage miniaturized IR spectrometer, covering the 0-54 μm region at 0.84 μm spectral resolution, operating for one seasonal cycle (a year) with diurnal subsampling.
One 6U CubeSat spacecraft (470-650 km altitude) in near-polar orbit (82° - 98° inclination), operating for a half seasonal cycle (6 months).
Two spacecraft in polar orbits sample Arctic and Antarctic surfaces and clouds, providing sub-diurnal coverage
- University of Wisconsin, Department of Atmospheric and Oceanic Sciences, and Space Science and Engineering Center
- Tristan L’Ecuyer, Principal Investigator
- Erin Hokanson Wagner, Data Systems Manager
- Aronne Merrelli, Co-Investigator
- Nate Miller
- Meredith Grames
- James Anheuser
- NASA JPL
- Brian Drouin, Deputy Principal Investigator
- Brian Kahn, Co-Investigator
- Nicole-Jeanne Schlegel, Co-Investigator
- University of Michigan, Department of Climate and Space Sciences and Engineering
- Xianglei Huang, Co-Investigator
- Colten Peterson
- Yan Xie
- University of Colorado Boulder, Department of Atmospheric and Oceanic Sciences
- Jennifer Kay, Co-Investigator
- Jonah Shaw
For more information, contact Erin Hokanson Wagner
Website Launch16th June 2020
Welcome to the PREFIRE Website, hosted at the Space Science and Engineering Center.
- Peterson, C., X.H. Chen, Q. Yue, X.L. Huang, The Spectral Dimension of Arctic Outgoing Longwave Radiation and Greenhouse Efficiency Trends from 2003-2016, JGR-Atmospheres, 124, https://doi.org/10.1029/2019JD030428, 2019.
- Brian H. Kahn, Brian J. Drouin, T.S. L’Ecuyer, Assessment of sampling sufficiency for low-cost satellite missions: Application to PREFIRE, submitted to J. Atmos. Ocean. Tech. on February 10, 2020