Doppler lidar measurements of wind and turbulence in the marineboundary layer

摘要

Characterization of wind structure in the marine boundary layer isnimportant for understanding the processes affecting ocean-atmospherenexchange of heat, moisture and momentum, marine stratus formation andndissipation, and emission and scattering of electromagnetic radiationnfrom the ocean surface. Although wind information in the lower boundarynlayer can be obtained from balloons, anemometers mounted on ship masts,nand/or radar wind profilers, Doppler lidars offer the capability ofninterrogating a large area segment of the marine layer from a singlenlocation with high vertical and moderate horizontal spatial resolution.nApplication of Doppler lidar to marine studies was first demonstrated bynBanta et al. (1993), who used lidar wind measurements to illustrate thentemporal and spatial evolution of the sea breeze near Monterey, CA. Thenpresent authors extend the applications to include measurements ofnvertical motion for better understanding of stratocumulus cloud breakup,nas well as wind field characterization and the effect of winds on thenradar scattering signal from the ocean surface. They also describe annew, container-mounted lidar system specifically designed for shipboardnwind measurements