Planetary boundary layer (PBL) Planetary boundary layer (PBL), also called atmospheric boundary layer, the region of the lower troposphere where Earthâs surface strongly influences temperature, moisture, and wind through the turbulent transfer of air mass.
Portfolio optimization tools are useful to assist planners, advisers, and clients in ways to conceptualize the asset allocation problem. But, they should not be relied upon as the primary tool for structuring an investment portfolio.
The Opportunity. Developed by UPS, ORIONâor On-Road Integrated Optimization and Navigationâis a route-optimization system that analyzes a collection of data points including the dayâs package deliveries, pickup times, and past route performance to create the most efficient daily route for drivers.