Characterizing ice particles using two-dimensional reflections of a lidar beam.

摘要: We report a phenomenon manifesting itself as brief flashes of light on the snow’s surface near lidar beam. The are imaged and interpreted specular reflection patterns from individual ice particles. Such have two-dimensional structure similar to those previously observed in forward scattering. Patterns easiest capture particles with well-defined horizontal facets, such near-horizontally aligned plates. their position can be used determine properties particle shape, size, roughness, alignment, altitude. Data obtained at Summit Greenland show presence regular hexagonal scalene plates, columns, rounded plates various sizes, among others.