Changes between Version 54 and Version 55 of doc/tec/microphysics

Timestamp:

May 25, 2018 9:36:34 AM (7 years ago)

Author:

schwenkel

Comment:

--

doc/tec/microphysics

@@ -88 +88 @@
 #!Latex
 \begin{align*}
-  & N_\mathrm{c}'=\frac{N_\mathrm{0}}{2} [1-\text{erf}(u)];\hspace{1.5cm} u = \frac{\ln(S_\mathrm{0}/S)}{\sqrt{2} \ln \sigma_\mathrm{s}}
+  & N_\mathrm{CCN}=\frac{N_\mathrm{0}}{2} [1-\text{erf}(u)];\hspace{1.5cm} u = \frac{\ln(S_\mathrm{0}/S)}{\sqrt{2} \ln \sigma_\mathrm{s}}
 \end{align*}
 }}}
@@ -100 +100 @@
 }}}
 Here A is the Kelivn parameter and b and ''β'' depend on the chemical composition and physical properties of the dry aerosol.
+Since aerosol is not predicted in this scheme, the number of aerosols previously activated is assumed to be equal to the number of droplets ''N'',,c,,.
+Therefore, the actual activation rate is given by  
+{{{
+#!Latex
+\begin{align*}
+   \frac{\partial N_\mathrm{c}}{\partial t} \right|_{\text{acti}} = \text{max}\left(\frac{N_\mathrm{CCN}-N__\mathrm{CCN}}{\Delta t},0\right)
+\end{align*}
+}}}
 == Diffusional growth of cloud water ==