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Original Articles

Analytical Expression on Characteristic Time Scale of Black Carbon Aging due to Condensation of Hygroscopic Species

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Pages 601-609 | Received 28 Mar 2011, Accepted 05 Nov 2011, Published online: 10 Jan 2012

Figures & data

FIG. 1 Aging time scale due to condensation of hygroscopic vapors as a function of geometric mean BC particle diameter for different polydispersity levels and accommodation coefficients.

FIG. 1 Aging time scale due to condensation of hygroscopic vapors as a function of geometric mean BC particle diameter for different polydispersity levels and accommodation coefficients.

FIG. 2 Polydispersity factor as a function of geometric standard deviation for different geometric mean BC particle diameters. The limiting case of the continuum regime is also compared. For the computations, α = 1 was used.

FIG. 2 Polydispersity factor as a function of geometric standard deviation for different geometric mean BC particle diameters. The limiting case of the continuum regime is also compared. For the computations, α = 1 was used.

FIG. 3 Aging time scale as a function of condensing vapor concentration for different geometric mean BC particle diameters. For the computations, σg = 1.5 and α = 1 were used.

FIG. 3 Aging time scale as a function of condensing vapor concentration for different geometric mean BC particle diameters. For the computations, σg = 1.5 and α = 1 were used.

FIG. 4 Aging time scale due to condensation of hygroscopic vapors as a function of geometric mean BC particle diameter for different polydispersity levels and accommodation coefficients but for the number-based parameterization.

FIG. 4 Aging time scale due to condensation of hygroscopic vapors as a function of geometric mean BC particle diameter for different polydispersity levels and accommodation coefficients but for the number-based parameterization.

FIG. 5 Polydispersity factor as a function of geometric standard deviation for different geometric mean BC particle diameters but for the number-based parameterization. The limiting case of the continuum regime is also compared. For the computations, α = 1 was used.

FIG. 5 Polydispersity factor as a function of geometric standard deviation for different geometric mean BC particle diameters but for the number-based parameterization. The limiting case of the continuum regime is also compared. For the computations, α = 1 was used.

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