Classification of ice crystal shapes in midlatitude ice clouds from three years of lidar observations over the SIRTA observatory - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of the Atmospheric Sciences Année : 2006

Classification of ice crystal shapes in midlatitude ice clouds from three years of lidar observations over the SIRTA observatory

Résumé

This paper presents a study of ice crystal shapes in midlatitude ice clouds inferred from a technique based on the comparison of ray-tracing simulations with lidar depolarization ratio measured at 532 nm. This technique is applied to three years of lidar depolarization ratio observations from the SIRTA (Site Instrumental de Recherche par Télédétection Atmosphérique) observatory in Palaiseau, France, amounting to 322 different days of ice cloud observations. Particles in clouds are classified in three major groups : plates, columns, and irregular shapes with aspect ratios close to unity. Retrieved shapes are correlated with radiosounding observations from a close-by meteorological station: temperature, relative humidity, wind speed and direction.
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Dates et versions

hal-00115274 , version 1 (20-11-2006)

Identifiants

  • HAL Id : hal-00115274 , version 1

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Vincent Noel, Hélène Chepfer, Martial Haeffelin, Yohann Morille. Classification of ice crystal shapes in midlatitude ice clouds from three years of lidar observations over the SIRTA observatory. Journal of the Atmospheric Sciences, 2006, 63, pp.2978-2991. ⟨hal-00115274⟩
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