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| Refractive index of atmospheric aerosol: Urban and mixed | Parent topic |
| Table 4. Experimental data on the complex refractive index, m = m' - m"i, of atmospheric aerosol from urban and mixed locations. A value following the ± sign in both the m' and m" columns is a single SD. Abbreviations and symbols: INOP - inversion of optical properties, ND - no data, τ - optical thickness of the atmosphere. |
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| Aerosol type/source | Wavelength, λ, µm |
m' | m" | Method | Reference |
| Greenbelt, MD, USA | 0.44 | 1.41 - 0.03τ(440 nm) ± 0.03 | 0.003 ± 0.003 | RTM (see also) |
Dubovik O et al 2002 |
| Mainz, Germany | 0.589 | 1.50 to 1.63 | ND | IMRE a, v | Hänel G 1968 |
| Maladives | 0.44 | 1.44 ± 0.02 | 0.011 ± 0.007 | RTM (see also) |
Dubovik O et al 2002 |
| Mexico City, Mexico | 0.44 | 1.47 ± 0.03 | 0.014 ± 0.006 | RTM (see also) |
Dubovik O et al 2002 |
| Paris, France | 0.44 | 1.40 ± 0.03 | 0.009 ± 0.004 | RTM (see also) |
Dubovik O et al 2002 |
| road dust, AZ, USA (low conc.) | 0.45-0.82 | 1.339 to 1.332 d1 | 0.0087 to 0.0011 d2 | varies d1, d2 |
Egan WG 1982 |
| road dust, AZ, USA (high conc.) | 0.45-0.82 | 1.336 to 1.332 d1 | 0.0011to 0.0014 d2 | varies d1, d2 |
Egan WG 1982 |
| Sendai, Japan | 0.514 | 1.47 to 1.57 | 0.009 to 0.037 | INOP c | Tanaka M et al 1983 |
| Tucson, AZ, USA | 0.45-0.65 | 1.50 | 0.005 | INOP b | Hansen MZ 1980 |
| Vienna, Austria | 0.45-0.65 | 1.51 | 0.02 | EMT v (see also) |
Kocifaj M et al 2006b |
| a - a variation of the IMRE method was used: aerosol particles were dispersed in two liquids with different refractive indices (RI), the RIs of the dispersions were measured, and the RI of the particles was determined by solving the volume mixing rule equation b - Chahine-Twomey inversion (for example, Twomey S 1975) of the scattering matrix c - Phillips-Twomey inversion (for example, Chow LC and Tien 1976) applied to 302 phase functionsof the aerosols d1 - decreases with the increasing wavelength; Brewster angle technique applied to compressed pellets of the aerosol d2 - no spectral pattern; a Kubelka-Munk theory-based technique applied to a thin layer of the aerosol on a KBr pellet v - volume mixing rule |
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| CITATION: Jonasz M. 2006. Refractive index of urban atmospheric aerosol: Data (www.tpdsci.com/Tpc/RIAtmAerUrbDat.php). In: Top. Part. Disp. Sci. (www.tpdsci.com). |
HISTORY: Published: 24-Nov-2006 Modified: 08-Apr-2008 Peer-reviewed: PENDING |
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