Changes between Version 31 and Version 32 of doc/tec/microphysics

Timestamp:

May 22, 2018 2:59:53 PM (7 years ago)

Author:

schwenkel

Comment:

--

doc/tec/microphysics

@@ -129 +129 @@
 }}}
 where S is the supersaturation, ''R'',,c,, the integral radius and G(T,p) a function of temperature and pressure considering heat conductivity and diffusion.
-Using this explicit approach the used timestep must fulfill a new criterion, since it is assumed that the supersaturation is constant during one timestep. 
+Using this explicit approach the used timestep must fulfill a new criterion, since it is assumed that the supersaturation is constant during one timestep. The typical timescale is given by 
+#!Latex
+\begin{align*}
+  & \left.\frac{\partial q_\mathrm{c}}{\partial t}
+  \right|_{\text{cond,evap}}= \frac{4
+  \pi\,G(T,p)}{\rho_\mathrm{a}}S\, R_\mathrm{c},
+\end{align*}
+}}}
 == Autoconversion ==
 
@@ -403 +410 @@
 
 == References ==
+
+* [=#arnason1971]'''Arnason G, Brown J P S.''' 1971. Growth of cloud droplets by condensation: A problem in computational stability. J. Atmos. Sci. 28: 72-77.
+
 * [=#emanuel1994]'''Emanuel KA.''' 1994. Atmospheric Convection. Oxford University Press.