Multi-Wavelength Transmittance Through Falling Snow

D. L. Hutt; L. R. Bissonnette; D. St. Germain

doi:10.1117/12.960878

11 October 1989 Multi-Wavelength Transmittance Through Falling Snow

D. L. Hutt, L. R. Bissonnette, D. St. Germain

Proceedings Volume 1115, Propagation Engineering; (1989) https://doi.org/10.1117/12.960878
Event: SPIE 1989 Technical Symposium on Aerospace Sensing, 1989, Orlando, FL, United States

Abstract

Measurements of transmittance through falling snow were made in the visible, 3-5 μm and 8-12 μm bands along a 540 m path. In the visible, measurements were made for both a narrow (0.05 mrad) and wide (3mrad) transmitted beam detected by a common receiver. The apparent path averaged extinction, derived from the transmittance measurements using the Beer- Bouguer law, was found to be dependent upon wavelength and transmissometer geometry. The results may be explained by taking into account scattered contributions to the measured transmittance. The results are compared to calculations made with a single-scattering model and a multiscattering model.

Citation Download Citation

D. L. Hutt, L. R. Bissonnette, and D. St. Germain "Multi-Wavelength Transmittance Through Falling Snow", Proc. SPIE 1115, Propagation Engineering, (11 October 1989); https://doi.org/10.1117/12.960878

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