Calendar Event Details
AEROCENTER: Igor Veselovskiy
Affiliation: University of Maryland Baltimore County
Event Date: Tuesday, April 19, 2016
Location: G133
Time: 11:00 AM
Vertical distribution of particle parameters obtained from multiwavelength Raman lidar measurements during SHADOW campaign in Senegal in 2015-2016
West Africa is important location for studying dust properties and their influence on weather and climate. The SHADOW (Study of SaHAran Dust Over West Africa) campaign is performing a multi-laboratory study of aerosol properties and dynamics using a set of in situ and remote sensing instruments at an observation site located at Mbour, Senegal. In particular, the multiwavelength Mie-Raman lidar performed measurements during this period. This set of measurements has permitted particle intensive properties such as extinction and backscattering Angstrom exponents (EAE and BAE) for 355/532 nm wavelengths, corresponding lidar ratios and depolarization ratio at 532 nm to be determined. The backscattering Angstrom exponent during the dust episodes decreased to ~-0.7, which can likely be explained by an increase in the imaginary part of the dust refractive index at 355 nm compared to 532 nm. The dust extinction and backscattering coefficients at multiple wavelengths were inverted to the particle microphysics using inversion with regularization. The lidar data acquired are also used for the study of EAE, BAE and depolarization ratio in cirrus clouds.
Posted or updated: Wednesday, April 13, 2016
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