Wind profiler and RASS measurements compared with measurements from a 450-m-tall tower

Wayne M. Angevine, Peter S. Bakwin, Kenneth James Davis

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

A 915-MHz boundary layer wind profiler with radio acoustic sounding system (RASS) was sited 8 km from a very tall (450 m) television transmitting tower in north-central Wisconsin during the spring, summer, and autumn of 1995. The profiler measured wind means and variances, and the RASS attachment measured virtual temperature. These quantities are compared to measurements from cup and sonic anemometers and a thermometer/ hygrometer at 396 m above ground level on the tower. The precision of hour-averaged profiler winds is better than 1 m s-1, and the precision of the RASS virtual temperature is better than 0.9 K. Corrections to the virtual temperature measured by the RASS are discussed, and a new virtual temperature retrieval method is proposed. Vertical velocity variance correlation is similar to a previous study, and the fact that bias is small indicates that the calculation method used is reliable.

Original languageEnglish (US)
Pages (from-to)818-825
Number of pages8
JournalJournal of Atmospheric and Oceanic Technology
Volume15
Issue number3
DOIs
StatePublished - Jan 1 1998

Fingerprint

profiler
Towers
acoustics
Acoustics
radio
Television towers
temperature
Hygrometers
Temperature
Thermometers
anemometer
Anemometers
television
Boundary layers
boundary layer
autumn
summer

All Science Journal Classification (ASJC) codes

  • Ocean Engineering
  • Atmospheric Science

Cite this

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abstract = "A 915-MHz boundary layer wind profiler with radio acoustic sounding system (RASS) was sited 8 km from a very tall (450 m) television transmitting tower in north-central Wisconsin during the spring, summer, and autumn of 1995. The profiler measured wind means and variances, and the RASS attachment measured virtual temperature. These quantities are compared to measurements from cup and sonic anemometers and a thermometer/ hygrometer at 396 m above ground level on the tower. The precision of hour-averaged profiler winds is better than 1 m s-1, and the precision of the RASS virtual temperature is better than 0.9 K. Corrections to the virtual temperature measured by the RASS are discussed, and a new virtual temperature retrieval method is proposed. Vertical velocity variance correlation is similar to a previous study, and the fact that bias is small indicates that the calculation method used is reliable.",
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Wind profiler and RASS measurements compared with measurements from a 450-m-tall tower. / Angevine, Wayne M.; Bakwin, Peter S.; Davis, Kenneth James.

In: Journal of Atmospheric and Oceanic Technology, Vol. 15, No. 3, 01.01.1998, p. 818-825.

Research output: Contribution to journalArticle

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