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An Inexpensive Sonic Anemometer for Eddy Correlation Public Deposited

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Abstract
  • A new continuous wave sonic anemometer was constructed using inexpensive ultrasonic transducers and phase-locked loop integrated circuitry. Vertical wind is measured by sensing the difference in phase between sound waves traveling in the +g and −z directions. The direction of sound travel is reversed 78 times per second, so the wind signal is updated at this frequency. Resolution is better than 1 cm s⁻¹ and drift less than 3 mm s⁻¹ K⁻¹. Comparisons with a commercial sonic anemometer show excellent agreement between measurements from the two units.
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  • Campbell, G. S., M. H. Unsworth, 1979: An Inexpensive Sonic Anemometer for Eddy Correlation. Journal of Applied Meteorology, 18, 1072–1077.
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  • Partial support was received from Washington Agricultural Research Center, Project 0184.
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  • description.provenance : Made available in DSpace on 2012-02-22T22:44:02Z (GMT). No. of bitstreams: 1 UnsworthMH.CEOAS.InexpensiveSonicAnemometer.pdf: 384625 bytes, checksum: af1e7a46cd5b60c0b3c5347fd97547f6 (MD5) Previous issue date: 1979-08
  • description.provenance : Submitted by Deborah Campbell (deborah.campbell@oregonstate.edu) on 2012-02-22T22:44:02Z No. of bitstreams: 1 UnsworthMH.CEOAS.InexpensiveSonicAnemometer.pdf: 384625 bytes, checksum: af1e7a46cd5b60c0b3c5347fd97547f6 (MD5)

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