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Proceedings Paper

Lidar determination of mixing layer height with high resolution
Author(s): Giovanni Martucci; Renaud Matthey; Valentin Mitev; Hans Richner
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Paper Abstract

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.

Paper Details

Date Published: 1 November 2005
PDF: 10 pages
Proc. SPIE 5979, Remote Sensing of Clouds and the Atmosphere X, 597924 (1 November 2005); doi: 10.1117/12.627628
Show Author Affiliations
Giovanni Martucci, Observatory of Neuchâtel (Switzerland)
Renaud Matthey, Observatory of Neuchâtel (Switzerland)
Valentin Mitev, Observatory of Neuchâtel (Switzerland)
Hans Richner, ETH Hönggerberg HPP (Switzerland)

Published in SPIE Proceedings Vol. 5979:
Remote Sensing of Clouds and the Atmosphere X
Klaus Schäfer; Adolfo T. Comerón; James R. Slusser; Richard H. Picard; Michel R. Carleer; Nicolaos Sifakis, Editor(s)

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