UKCA & UMUI Tutorial 8
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Adding Wet Deposition
! The following formula is used to calculate the effective Henry's Law coef, ! which takes the affects of dissociation and complex formation on a species' ! solubility (see Giannakopoulos, 1998) ! ! H(eff) = K(298)exp{[-deltaH/R]x[(1/T)-(1/298)]} ! ! The data in columns 1 and 2 above give the data for this gas-aqueous transfer, ! Column 1 = K(298) [M/atm] ! Column 2 = -deltaH/R [K-1] ! ! If the species dissociates in the aqueous phase the above term is multiplied by ! another factor of 1+{K(aq)/[H+]}, where ! K(aq) = K(298)exp{[-deltaH/R]x[(1/T)-(1/298)]} ! The data in columns 3 and 4 give the data for this aqueous-phase dissociation, ! Column 3 = K(298) [M] ! Column 4 = -deltaH/R [K-1] ! The data in columns 5 and 6 give the data for a second dissociation, ! e.g for SO2, HSO3^{-}, and SO3^{2-} ! Column 5 = K(298) [M] ! Column 6 = -deltaH/R [K-1]
Written by Luke Abraham 2013