Optimization of Lidar Boundary Layer Height Retrieval

Abstract

A highly significant application for lidar sounding of the atmosphere is the retrieval of the height of the planetary boundary layer (PBL). The PBL height is an important factor in the transport of energy from the surface to the free troposphere and is directly related to the initiation and development of mesoscale events. Thus PBL height is a very useful input and validation parameter for Global Circulation Models. Currently there is no effective passive retrieval technique for PBL height. However the detection of PBL height from lidar aerosol scattering has been widely demonstrated. A primary consideration for lidar PBL height retrieval is the minimal detectability in terms of either atmospheric scattering structure or lidar system signal to noise sensitivity. Global measurements of PBL height from space borne lidar systems are envisioned. A primary consideration is how reliably PBL height may be detected for given lidar system parameters. The cost of a space borne system may be significantly reduced by minimizing telescope size and transmitted laser power.