9 April 2001 Aerosol extinction distribution during the morning transition of breeze circulation observed by lidar
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Proceedings Volume 4397, 11th International School on Quantum Electronics: Laser Physics and Applications; (2001) https://doi.org/10.1117/12.425184
Event: 11th International School on Quantum Electronics: Laser Physics and Applications, 2000, Varna, Bulgaria
Abstract
This paper presents a study of the distribution of aerosol extinction coefficient and its time and spatial variations during the morning breeze transition period. The experiment was carried out near the town of Akhtopol with a groundbased aerosol lidar. The results show an existence of characteristic extinction distribution (aerosol stratification) for each stage. In the beginning of the period, when in the lowest 200 m there is still an off-shore breeze, an aerosol layer with high extinction exists at heights of about 150 - 200 m above the sea surface. As the sunheating gets stronger this layer is gradually destroyed. At the end of the period, when the on- shore breeze is already established, in the lowest 200 m, a layer of low extinction is observed at height of about 200 m above the sea surface. A coincidence has been revealed between the heights of the wind changes and location of layers where the extinction differs from the one of the surrounding air. Besides the change in breeze pattern, the change in the relative humidity also affects the observed time and spatial variations in aerosol extinction.
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Toni S. Skakalova, Toni S. Skakalova, Plamen B. Savov, Plamen B. Savov, Elena G. Topuzova, Elena G. Topuzova, Ivan V. Grigorov, Ivan V. Grigorov, } "Aerosol extinction distribution during the morning transition of breeze circulation observed by lidar", Proc. SPIE 4397, 11th International School on Quantum Electronics: Laser Physics and Applications, (9 April 2001); doi: 10.1117/12.425184; https://doi.org/10.1117/12.425184
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