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The Atmospheric Emitted Radiance Interferometer (AERI) is a Ground-based High Resolution Interferometer Sounder (GB-HIS) used to produce temperature and water vapor profiles every ten minutes in the Planetary Boundary Layer (PBL), the lowest 2.5 km of the earth's atmosphere. AERI measures infrared (IR) radiation (3 to 18 µm) passively, yielding high spectral resolution IR radiance (Δv = 0.5 cm-1). Meteorological information is contained within the radiance spectra as shown in Figure 1. These radiance spectra are transformed to vertical temperature and water vapor profiles by inverting the IR RadiativeTransfer Equation (RTE) (Smith, 1994). High temperature and water vapor retrieval skill, within the PBL, have been shown in several field experiments using AERI (Feltz, 1994).
© 1995 Optical Society of America
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