Atmospheric Emitted Radiance Interferometer


The Atmospheric Emitted Radiance Interferometer (AERI) is a ground-based instrument that measures the downwelling infrared radiance (radiant energy) from the Earth’s atmosphere.  The observations have broad spectral content (3 – 25.0 µm) and sufficient spectral resolution (0.5 cm-1) to discriminate among gaseous emitters (e.g. carbon dioxide, water vapor) and suspended matter (e.g. aerosols, water droplets, ice crystals).  These uplooking surface observations can be used to obtain vertical profiles of tropospheric temperature and water vapor, as well as measurements of trace gases (e.g. ozone, carbon monoxide, methane) and downwelling infrared spectral signatures of clouds and aerosols.

The AERI was designed by the University of Wisconsin Space Science and Engineering Center (UW-SSEC) for the Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) program.  AERI instruments have been deployed worldwide at ground-based fixed and mobile sites, as well as in marine deployments.

Contact information

Jonathan Gero
University of Wisconsin–Madison
1225 W Dayton St
Madison, WI 53706
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Principal Investigators

Funding contributors and acknowledgements

January 12, 2015