Changes between Version 38 and Version 39 of doc/tec/microphysics

Timestamp:

May 25, 2018 8:06:18 AM (7 years ago)

Author:

schwenkel

Comment:

--

doc/tec/microphysics

@@ -75 +75 @@
 [[Image(Table4.png,600px,border=1)]]
 
+== Activation of cloud droplets ==
+
+The use of the  [#morrison2007 Morrison et al (2007)] enables a prognostic equation for the cloud droplet number concentration. Here, it is assumed that cloud droplets are activated in dependence of the current supersaturation. This basic method is called Twomey activation scheme with the general form of
+{{{
+#!Latex
+\begin{align*}
+  & N_\mathrm{CCN}=N_\mathrm{CCN} \times S^\mathrm{CCN}
+\end{align*}
+}}}
+ In PALM the supersaturation is calculated explicitly by tge thermodynamic fields of potential temperature and water vapor mixing ratio. 
 == Diffusional growth of cloud water ==
 
@@ -119 +129 @@
 }}}
 
-In contrast to that an explicit approach for the diffusional growth is applied in case of [#morrison2007 Morrison (2007)]. The condensation rate is calculated follwoing [#khairoutdinov2000 Khairoutdinov and Kogan (2000)] and given by
+In contrast to that an explicit approach for the diffusional growth is applied in case of [#morrison2007 Morrison et al (2007)]. The condensation rate is calculated follwoing [#khairoutdinov2000 Khairoutdinov and Kogan (2000)] and given by
 {{{
 #!Latex