“…Lunar calibration and modeling are considerably less accurate when λ > 2.5 μm. Pugacheva, et al (2001) derived an analytical expression that provided brightness temperature variations at any point on the Moon in the infrared (10-12 μm) spectral range as functions of albedo, phase angle, and the distance between the Sun and the Moon. Pugacheva, et al (2001) used the model (Pugacheva, et al, 1999) to calibrate mid-infrared measurements from a geosynchronous satellite against the Moon.…”