Case study of the transport of a power plant tracer-plume over Grand Canyon National Park

摘要

A mass-consistent meso-scale wind field model was applied to the complex terrain area of Grand Canyon for 1990 Winter Salt River Project's Navajo Generating Station (NGS) Visibility Study. The model interpolates hourly grided mean wind field as an input field for trajectory model to simulate the plume emissions for meso-scale air pollution studies using network measured surface and upper air meteorological data. Three flow types associated with the directly, indirectly, and non transports of the NGS plume emissions towards the Grand Canyon National Park were examined. Predicted plume streaklines from a trajectory model were compared with surface observed tracer data.