NASA Goddard's Scientific Visualization Studio/T. Schindler.
Tampa Comparison Imagery
These images show how Tampa's concentration of nitrogen dioxide averaged over 2005 (left) compares to the average over 2011 (right). Measurements of nitrogen dioxide from the Ozone Monitoring Instrument on NASA's Aura satellite depict the concentration of the gas throughout a column of air in the troposphere, Earth's lowest atmospheric layer. The images are color-coded: Orange and red areas denote high concentrations and blue and green denote lower concentrations.