Comparison of METEK SODAR and CIBA Met Tower

The tower provides a height of 100 m agl for the upper level. The following comparisons were performed for the 100 m height of the SODAR output. Unfortunately in mid April 2002 the height adjustments for the second part of the comparison was changed to to 95mhave been changed in, therefore the SODAR height changed . That might lead to small deviations, when comparing to 100 m from the Met Tower.

The comparison distinguishes between the data of the 24 hours of one day and only the night-time's (19:00 to 07:00 local time). Turbulence during day-time's increases due to the physical basis of the measurement the scatter of the data.

There was no manual data rejection on the SODAR data. Only data indicated by the internal plausibility check (in this case signal noise ratio and fixed echoes) have not been used for the comparison.

Comparison Data (Please click on the following images to expand them in a new window)
	February 2002, all data, data rejection just by internal plausibility check (signal noise ratio and fixed echo) METEK height 100 m and tower height 100 m
	February 2002, just night period 19:00-07:00h, data rejection just by internal plausibility METEK height 100 m and tower height 100 m
	February to April (01.02.-11.04.2002), all data, data rejection just by internal plausibility, (signal noise ratio and fixed echo) METEK height 100 m and tower height 100 m
	February to April (01.02.-11.04.2002), just night period 19:00-07:00h, data rejection just by internal plausibility METEK height 100 m and tower height 100 m
	April to July (16.04.-15.07.2002), all data, data rejection just by internal plausibility, (signal noise ratio and fixed echo) METEK height 95 m and tower height 100 m
	April to July (16.04.-15.07.2002), just night period 19:00-07:00h, data rejection just by internal plausibility METEK height 95 m and tower height 100 m

We hope these examples where of interest and thank you for visiting www.biral.com/met/sodar/sodarapp3.htm

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