(Upper) Average N2O5 exchange velocity (Vex, cm s−1) as a function of 10-m wind speed (m s−1). Modeled exchange velocities, determined via Eq. E3 [Johnson (29)] are shown using the dimensionless gas over liquid Henry’s Law Constant, KH (N2O5) = 1.9 × 10−2 with and without incorporation of N2O5 hydrolysis (kr = 5 × 106 s−1). Parameterizations of Liss (33), Mackay and Yeun (30), and Duce (34) are also shown for comparison. (Lower) The 2012 annual median (black line), interquartile range (dark gray shaded region), and full range (light gray shaded region) for 10-m wind speed measured at the SIO pier.