Cliquez pour modifier le style du titre Cliquez pour modifier le style des sous-titres du masque Retrieval of the turbulent and backscattering properties using a non- linear filtering technique applied to Doppler LIDAR observation Christophe Baehr* , ** , C. Beigbeder*, F. Couvreux*, A. Dabas*, B. Piguet* [email protected]** Météo-France/CNRS – CNRM/GAME URA1357 ** Institut de Mathématiques de Toulouse - Université de Toulouse ISARS 2012 - Boulder, Colorado, USA, 5-8 June 2012
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Christophe Baehr* , ** , C. Beigbeder*, F. Couvreux*, A. Dabas*, B. Piguet*
Retrieval of the turbulent and backscattering properties using a non-linear filtering technique applied to Doppler LIDAR observation. Christophe Baehr* , ** , C. Beigbeder*, F. Couvreux*, A. Dabas*, B. Piguet*. ISARS 2012 - Boulder, Colorado, USA, 5-8 June 2012. - PowerPoint PPT Presentation
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Cliquez pour modifier le style du titre
Cliquez pour modifier le style des sous-titres du masque
Retrieval of the turbulent and backscattering properties using a
non-linear filtering technique applied to Doppler LIDAR
** Météo-France/CNRS – CNRM/GAME URA1357** Institut de Mathématiques de Toulouse - Université de Toulouse III
ISARS 2012 - Boulder, Colorado, USA, 5-8 June 2012
Outline
Introduction How a Doppler lidar and a particle filter can
retrieve the properties of a random medium? Some theoretical elements. Experimental results : a numerical exercise. Comparisons with Numerical products Next Steps
Our final objective is to retrieve the characteristics of a random medium from sparse observations.
The retrieval is done locally, that is, in the vicinity of the observations.
The retrieval technique we have developed has already been applied successfully to in-situ measurements of wind and temperature performed at fixed locations.
We present here the extension of our method to Doppler lidar data for the retrieval of TKE and EDR at a fine temporal resolution.
Comparison with a Meso-NH simulation (for an other day and an other location) to compare the shape of the structures (above : wind, bottom TKE), especially for the TKE.