Water vapor absorption in the 190-213 GHz region laboratory experiments

A. Bauer

doi:10.1117/12.2298010

4 December 2017 Water vapor absorption in the 190-213 GHz region laboratory experiments

A. Bauer

Proceedings Volume 1576, 16th International Conference on Infrared and Millimeter Waves; 157689 (2017) https://doi.org/10.1117/12.2298010
Event: 16th International Conference on Infrared and Millimeter Waves, 1991, Lausanne, Switzerland

Abstract

The atmospheric windows between the few lines of water vapor in the millimeter wave range have received much attention in the past years. Significant departures from theoritical impact and kinetic laws have been brought to light by experimental observations, which are mostly field measurements. Only few laboratory experiments are available, which require a high sensitivity because of the low absorption coefficients to be measured: about 10^-8 cm^-1 (4 x 10^-3 dB/km) per torr of pure water vapor, and 5 x 10^-7 cm^-1 (0.2 dB/km) per torr of water vapor in an atmospheric mixture with nitrogen.

Citation Download Citation

A. Bauer "Water vapor absorption in the 190-213 GHz region laboratory experiments", Proc. SPIE 1576, 16th International Conference on Infrared and Millimeter Waves, 157689 (4 December 2017); https://doi.org/10.1117/12.2298010

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