Other
Scientific paper
Mar 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3306805v&link_type=abstract
Geophysical Research Letters, Volume 33, Issue 6, CiteID L06805
Other
5
Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801, 4906), Atmospheric Composition And Structure: Radiation: Transmission And Scattering, Atmospheric Composition And Structure: Troposphere: Composition And Chemistry, Atmospheric Composition And Structure: Instruments And Techniques
Scientific paper
The real refractive index (nr) of dry aerosols measured at an Antarctic site was calculated using two methods. Number size distributions were applied in a Mie model where nr was varied until the measured and modeled scattering coefficients matched. Ion concentrations analyzed from impactor samples were used for calculating size-dependent nr. Generally the two methods were consistent with each other. The average iteration-derived nr varied mainly between ~1.4 and ~1.5 but also unreasonably low values, nr < 1.3, were obtained in air masses from the ocean. Possible explanations, such as inaccuracies in the method, water in the particles, non-analyzed biogenic particles, or non-spherical particles being responsible for the low values are discussed.
Hillamo R.
Kerminen Veli-Matti
Koponen I. K.
Kulmala Markku
Teinilä K.
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