Sonic Detection and Ranging (SODAR) Wind Profiler Instrument Handbook [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 621.444 Applied physics
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Science ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2020
• Mô tả vật lý: Size: 22 p. : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 257924
• Chủ đề: 1. 17 wind energy; 2. 54 environmental sciences; 3. Backscattered energy, horizontal wind field, vertical wind speed, virtual temperature

Tóm tắt

The SODAR (Sonic Detection and Ranging) wind profiler measures wind profiles and backscattered signal strength between (nominally) 15 meters (m) and 500 m. It operates by transmitting acoustic energy into the atmosphere and measuring the strength and frequency of backscattered energy. The strength of the backscattered signal is determined by the strength of temperature inhomogeneities with size on the order of 10 centimeters (cm). Assuming the scattering elements in the atmosphere are moving with the mean wind, the horizontal wind field can be derived. The U.S. Department of Energy (DOE)?s Atmospheric Radiation Measurement (ARM) Climate Research Facility Mobile Facility (AMF) has a system developed by Scintec, Inc. that transmits a sequence of frequencies to enhance signal determination.