Figure 10:

Time constants for photochemical loss (Left) and net photochemical lifetime (Right) above the condensation region on Uranus for C₂H₆ (red solid line) and C₂H₂ (blue dashed line), along with the diffusion time constant for C₂H₆ (green dot-dashed line, nearly identical to that for C₂H₂), compared to a Uranus year (vertical black triple-dot-dashed line) and a Uranus season (orange dotted line) for −3° latitude, vernal equinox. (For interpretation of the references to color in this figure legend, the reader is referred to the online version of this article.)