Changes between Version 46 and Version 47 of doc/tec/microphysics


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Timestamp:
May 25, 2018 9:18:51 AM (7 years ago)
Author:
schwenkel
Comment:

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  • doc/tec/microphysics

    v46 v47  
    8585}}}
    8686where ''N'',,CCN,, is the number of activated aerosols, ''N'',,0,, is the number concentration of dry aerosol, S is the supersaturation and k is power index between 0 and 1. In PALM the supersaturation is calculated explicitly by their thermodynamic fields of potential temperature and water vapor mixing ratio. However, curvature and solution effects can be considered with an analytical extension of the Twomey type activation scheme of [#khvorostyanov2006 Khvorostyanov and Curry (2006)]. By doing so, the number of activated aerosol is calculated by
    87 {{{
    88 #!Latex
    89 \begin{align*}
    90   & N_\mathrm{C}'=\frac{N_\mathrm{0}}{2} [1-\erf(u)]; u = \frac{\ln(S_\mathrm{0}/S}{\sqrt{2} \ln \sigma_\mathrm{s}}
    91 \end{align*}
    92 }}}
     87
    9388== Diffusional growth of cloud water ==
    9489