*
Calculation of time independent factors of the dry deposition of *
particles: *
Log-Normal-distribution of mass [dM/dlog(dp)], unimodal *
*
AUTHOR: Matthias Langer, adapted by Andreas Stohl, 13 November 1993 *
*
Literature: *
[1] Scire/Yamartino/Carmichael/Chang (1989), *
CALGRID: A Mesoscale Photochemical Grid Model. *
Vol II: User's Guide. (Report No.A049-1, June, 1989) *
*
*
Variables: * alpha help variable * cun 'slip-flow' correction after Cunningham * d01 [um] upper diameter * d02 [um] lower diameter * dc [m2/s] coefficient of Brownian diffusion * delta distance given in standard deviation units * density [kg/m3] density of the particle * dmean geometric mean diameter of interval * dquer [um] geometric mass mean particle diameter * dsigma e.g. dsigma=10 or dsigma=0.1 means that 68% of the mass * are between 0.1dquer and 10dquer * fract(ni) mass fraction of each diameter interval * kn Knudsen number * ni number of diameter intervals, for which deposition * is calculated * schmidt Schmidt number * schmi schmidt**2/3 * vsh [m/s] gravitational settling velocity of the particle * x01 normalized upper diameter * x02 normalized lower diameter * * Constants: * g [m/s2] Acceleration of gravity * kb [J/K] Stefan-Boltzmann constant * lam [m] mean free path of air molecules * myl [kg/m/s] dynamical viscosity of air * nyl [m2/s] kinematic viscosity of air * tr reference temperature * * Function: * erf calculates the integral of the Gauss function * *
Normalisation. Why was it not normalised?
Type | Intent | Optional | Attributes | Name | ||
---|---|---|---|---|---|---|
real | :: | dquer | ||||
real | :: | dsigma | ||||
real | :: | density | ||||
integer | :: | ni | ||||
real, | intent(inout), | dimension(ni) | :: | fract | ||
real, | intent(inout), | dimension(ni) | :: | schmi | ||
real | :: | cun | ||||
real, | intent(inout), | dimension(ni) | :: | vsh |