Title :
A comparison of scintillation crosswind methods
Author :
Poggio, Lionel ; Furger, Markus ; Graber, Werner K.
Author_Institution :
Paul Scherrer Inst., Villigen, Switzerland
Abstract :
Shimmering of distant objects on a hot day or the twinkling of stars is familiar to most people. These visual effects, known as scintillation, are caused by the drift of refractive-index irregularities in the atmosphere. Analysis of scintillation phenomena provide a method for remotely sensing the atmosphere, since this effect is related to turbulence and wind. Optical remote sensing is an appealing method to measure wind in complex terrain. A scintillometer was built at the authors´ institute, with the aim to measure wind across an Alpine valley. In a first step, they tested this instrument over a flat ground and compared its performance with conventional anemometers. Different methods of evaluation can be used. They investigated 6 different methods, and the results of these tests are reported
Keywords :
atmospheric measuring apparatus; atmospheric techniques; meteorological instruments; remote sensing; wind; Alpine valley; atmosphere; instrument; measurement technique; meteorology; optical method; remote sensing; scintillation crosswind method; scintillometer; wind; Atmosphere; Atmospheric measurements; Delay effects; Extraterrestrial measurements; Fluid flow measurement; Frequency; Instruments; Optical refraction; Optical sensors; Testing;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1996. IGARSS '96. 'Remote Sensing for a Sustainable Future.', International
Conference_Location :
Lincoln, NE
Print_ISBN :
0-7803-3068-4
DOI :
10.1109/IGARSS.1996.516353
