The aerosols database from LITMS
(Laboratory for Information Technologies and Mathematical Simulation)

The LITMS archive consists of two parts :
FIRST PART : Complex indices of refraction computed aerosol integrated optical properties

Aerosol optical data from LITMS [of the Institute of Molecular Physics at the Russian Research Center “Kurchatov Institute”, Rublev (1994)] such as: integrated optical properties (e.g.extinction coefficient, asymmetry factor, etc…) as well as refractive indices of the basic aerosol constituents (e.g. Dust-Like, Water-Soluble, Soot, Volcanic Ash, etc…), have been archived in the GEISA-2003 subdatabase on Microphysical and Optical Properties of Atmospheric Aerosols.

Summarized lists of these data are given in Tables 1-3 :
Table 1 : Complex indices of refraction m=p-iq of basic aerosol components

Basic aerosol constituents References
Water (liquid) Zolatarev et al. (1984)
Dust WMO (1986)
75 % H2SO4
Sea salt
Soot
Volcanic ash
Water-soluble particles

Table 2 : Integrated optical properties (extinction coefficient, single scattering albedo, asymmetry factor) of principal aerosol models (WMO, 1986)

Aerosol
model		 Basic aerosol
constituents		 Volume relative
concentration (%)		 Particle number relative
concentration Ni/N(*)
Continental Dust-Like
Water-Soluble
Soot		 70
29
1		 2.26278 10-6
9.37437 10-1
6.25607 10-2
Urban Water-Soluble
Soot
Dust-Like		 61
22
17		 5.88931 10-1
4.11069 10-1
1.64128 10-7
Maritime Ocean
Water-Soluble		 95
5		 4.29942 10-4
9.99573 10-1
Stratospheric 75% H2SO4 100 1.0
Volcanic Volcanic Ash 100 1.0
Cloudy Water 100 1.0

Table 3 : Integrated optical properties (extinction coefficient, single scattering albedo, asymmetry factor) for basic aerosol constituent (computation by Rublev (1994))

Basic aerosol constituent
Dust-like particles
t
water-soluble particles
Soot
Oceanic

SECOND PART : Computation of the integrated optical properties of atmospheric aerosols: the AERCOMP FORTRAN code

The FORTRAN code AERCOMP (UNIX version) has been developed at LITMS by Rublev (1994). It allows calculations of the above basic aerosol integrated optical properties (see Table 3) for more complex, composite aerosol models with user’s selected concentrations of constituents.

REFERENCES

Rublev A.N., “Algorithms and calculations of aerosol phase functions”, Internal note IAE-5715/16 of the Russian Research Center “Kurchatov Institute”, 51 pp., 1994 (in Russian)

World Meteorology Organization (WMO) publication. World Climate Research Program, “A preliminary cloudless standard atmosphere for radiation computation”, WCP-112, WMO/TD-NO. 24 (1986)

Zolatarev V.M., Morozov V.M., and E.V. Smirnova, “Optical constants of natural and technology media”, 216 pp., Leningrad, 1984 (in Russian)