Abstract: Modern, fast cup anemometers are very useful for measuring the mean-wind speed. The calibration is linear and its operation is well described as a linear, first-order filter. Discussion in the literature about the importance ...

Abstract: It is well-known that the digitization noise variance is ?2/12 for a continuous time series sampled with the signal resolution ?. It is also generally accepted that this variance often has a white-power spectral density. ...

Abstract: We present a theoretical derivation for errors in calculated second moments arising from the temporal and spatial separation between individual wind measurements obtained from three-axis colocated monostatic Doppler sodar ...

Abstract: In this paper we use the theoretical results presented in Part I of this paper to correct turbulence parameters derived from monostatic sodar wind measurements in an attempt to improve the statistical comparisons made with ...

Abstract: Statistical considerations are applied to a general equation of motion for cup anemometers in a turbulent wind. It is shown that the relative overspeeding ?S/S can be expressed as ?S/S = Ih2 · Js(l0/?s) + cIw2, where Is ...

Abstract: Standard deviations of wind direction fluctuations at 76 m at Ris? for the first half year of 1975 have been analyzed as functions of wind speed and temperature lapse rate, either measured near the surface or near the level ...

Abstract: It is determined how long a time series must be to estimate covariances and moments up to fourth order with a specified statistical significance. For a given averaging time T there is a systematic difference between the ...

Abstract: To improve the quality of scalar-flux measurements, the two-point covariance between the vertical velocity w? and a scalar s?, separated in space both horizontally and vertically, is studied. The measurements of such ...