Momentum and turbulent kinetic energy budgets within the Park Avenue street canyon during Joint Urban 2003

Very few attempts have been made to quantify the momentum and turbulent kinetic energy (TKE) budgets within real urban canopies. In this work, sonic anemometer data obtained during the Joint Urban 2003 field campaign in Oklahoma City were used to calculate the momentum and turbulent kinetic energy budgets within a real-world urban street canyon. Sonic anemometers were deployed on multiple towers in the lower half of the canyon. Gradients in all three principal directions were included in the analyses. The storage and buoyancy terms were found to have negligible contributions to both the momentum and TKE budgets. The momentum budgets were generally found to be more complicated than a simple balance of two physical processes. The use of gradients in all three principal directions showed that the horizontal terms can not only have a significant contribution to the budgets but can actually dominate the budget.