Author： Münkel Christoph Eresmaa Noora Räsänen Janne Karppinen Ari
Publisher： Springer Publishing Company
ISSN： 0006-8314
Source： Boundary-Layer Meteorology, Vol.124, Iss.1, 2007-07, pp. : 117-128
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Abstract
The Vaisala ceilometers CT25K and CL31 are eye-safe single lens lidar systems reporting attenuated backscatter profiles; they often operate 24 h a day in fully automated, hands-off operation mode. These profiles can be used for more than just cloud-base height determination. In dry weather situations, there is a fairly good correlation between the ceilometer near-range backscatter and in situ PM10 concentration readings. The comparison of mixing height values based on soundings and on ceilometer backscattering profiles indicates that ceilometers are suitable instruments for determining the convective mixing height. Its enhanced optics and electronics enables the CL31 ceilometer to detect fine boundary-layer structures whose counterparts are seen in temperature profiles.
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