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Proceedings Article

Lidar determination of mixing layer height with high resolution

[+] Author Affiliations
Giovanni Martucci, Renaud Matthey, Valentin Mitev

Observatory of Neuchâtel (Switzerland)

Hans Richner

ETH Hönggerberg HPP (Switzerland)

Proc. SPIE 5979, Remote Sensing of Clouds and the Atmosphere X, 597924 (November 01, 2005); doi:10.1117/12.627628
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From Conference Volume 5979

  • Remote Sensing of Clouds and the Atmosphere X
  • Klaus Schäfer; Adolfo Comerón; James R. Slusser; Richard H. Picard; Michel R. Carleer; Nicolaos I. Sifakis
  • Bruges, Belgium | September 19, 2005


Ecological monitoring and analysis of the planetary boundary layer (PBL) dynamics require determination of the mixing layer height (MLH) on a continuous basis. In a number of cases it is necessary to determine the MLH with sufficiently high resolution - both altitude and temporal. The backscatter lidar provides a convenient tool for such determination, using the aerosol as tracer and determining its vertical profile and its time-evolution, with the capability for continuous measurements. Although methods already exist, based on the altitude derivative of the backscatter lidar signal (altitude Gradient method) and its time-variance (Variance method), the application of these methods with high resolution is limited by the background noise presence. We report here a further development of backscatter lidar gradient and variance methods for MLH determination, allowing higher resolutions. In it, the MLH determination from the gradient and the variance of the lidar signal is supported by a convenient filter technique. Time scale of increased temporal resolution allows the investigation of the fine atmospheric dynamic structures like convective motion. A number of examples in MLH retrieval are presented. The examples are based on backscatter lidar measurements performed in the PBL above Neuchatel, Switzerland (47.00°N, 6.95°S, 485m asl). The examples show the applicability and the usefulness of the reported technique in measurements of the daily cycle of the MLH dynamics.

© (2005) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Giovanni Martucci ; Renaud Matthey ; Valentin Mitev and Hans Richner
"Lidar determination of mixing layer height with high resolution", Proc. SPIE 5979, Remote Sensing of Clouds and the Atmosphere X, 597924 (November 01, 2005); doi:10.1117/12.627628; http://dx.doi.org/10.1117/12.627628

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