Journal of Geophysical Research, Vol. 100, D12, 25559-25567, 1995
An accuracy analysis of the wind profiles calculated from
Volume Imaging Lidar data
A. K. Piironen and E. W. Eloranta
University of Wisconsin
Space Science and Engineering Center
Abstract
This paper presents a study
of the vertical profiles of horizontal mean winds calculated
from data obtained with the University of Wisconsin
Volume Imaging Lidar (VIL) during the 1989 FIFE program.
Wind profiles are determined from
cross correlation functions between subsequent
Constant Altitude Plan Position Indicator planes
calculated from volume scans of the convective boundary layer.
An objective technique to identify unreliable measurements is developed.
An error analysis based on determining the errors due to
random noise in the data is performed.
The VIL wind profiles are compared with
radiosonde, aircraft-based, and ground-based measurements.
Based on internal consistency tests, we estimate that
in the convective boundary layer the hourly averaged VIL wind estimates
which have passed the reliability analysis, have root-mean-square errors of
0.03-0.1 ms-1 in speed and 0.4-2.0 degrees in direction.
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