Refractive-index structure parameter in the planetary boundary layer: comparison of measurements taken with a 106-µm coherent lidar, a 09-µm scintillometer, and in situ sensors
- 20 March 1999
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 38 (9) , 1648-1656
- https://doi.org/10.1364/ao.38.001648
Abstract
An optical technique is described that determines the path-averaged value of a refractive-index structure parameter at 10.6 μm by use of a pulsed coherent CO2 lidar in direct detection and hard-target returns. The lidar measurements are compared with measurements taken by a 0.9-μm scintillometer and temperature probe (with humidity corrections). The experimental results show good agreement for Cn2 ≥ −14 m−2/3. With respect to practical applications the new technique permits Cn2 lidar measurements in a neutral meteorological situation to an unstably stratified convective boundary layer over long ranges (1 km or more).Keywords
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