The study reported here was designed to examine the impact of background meteorological conditions on the propagation of noise from urban freeways in the Phoenix area. The aim was to understand and predict how sound waves emanating from highways respond to the vertical profiles of atmospheric temperature gradients and velocity shear, so that sound measurements can be interpreted with regard to the environmental variability.

This coloring book was designed at the Phoenix Center for the Arts by a couple of our artists as a tool for students to learn about air pollution and to take preventative actions and become good environmental stewards. It is something fun for children to do while at the same time providing a good story that’s instructive about protecting human health and the environment.