Prediction of Cn2 on the basis of macroscale meteorology including aerosols

Dan Sadot; Norman S. Kopeika

doi:10.1117/12.46548

1 July 1991 Prediction of C_n² on the basis of macroscale meteorology including aerosols

Dan Sadot, Norman S. Kopeika

Proceedings Volume 1487, Propagation Engineering: Fourth in a Series; (1991) https://doi.org/10.1117/12.46548
Event: Orlando '91, 1991, Orlando, FL, United States

Abstract

Although optical turbulence is usually modeled with micrometeorology, it is shown here that this can be done successfully with macrometeorology using meteorological parameters measured with standard weather stations and predicted in standard weather forecasts. This makes it possible to predict C2n according to the weather forecast. Two experimentally-derived models are developed--one for practical use and the other for scientific understanding. Correlation of prediction with measurement is 90% or more, over large dynamic ranges of meteorological parameters. One interesting aspect of these measurements is the statistical evidence that scintillations are affected by aerosols, particularly under conditions of high total aerosol cross sectional area. This may be attributed to increased refractive index changes encountered by radiation which penetrates through the aerosols. In addition, validity of the models was examined, and experimental comparisons in two very different climates and surface conditions are presented. High correlation is found in both cases between prediction and measurement.

Citation Download Citation

Dan Sadot and Norman S. Kopeika "Prediction of C_n² on the basis of macroscale meteorology including aerosols", Proc. SPIE 1487, Propagation Engineering: Fourth in a Series, (1 July 1991); https://doi.org/10.1117/12.46548

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