Open AccessComparison of aerosol and thin film spectra of supercooled ternary solution aerosol
Author(s) -
McPheat R. A.,
Bass S. F.,
Newnham D. A.,
Ballard J.,
Remedios J. J.
Publication year - 2002
Publication title -
journal of geophysical research: atmospheres
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/2001jd000641
Subject(s) - aerosol , mie scattering , materials science , ternary operation , supercooling , extinction (optical mineralogy) , refractive index , spectral line , analytical chemistry (journal) , angstrom exponent , stratosphere , scattering , optics , light scattering , chemistry , atmospheric sciences , physics , meteorology , chromatography , optoelectronics , astronomy , computer science , programming language
Extinction spectra of H 2 SO 4 ‐HNO 3 ‐H 2 O supercooled ternary solution (STS) aerosol particles, fully covering the mid‐ and near‐infrared region from 750 to 13,000 cm −1 (13.9 to 0.7 μm), have been measured in the laboratory using a 75 dm 3 volume coolable aerosol cell coupled with a Fourier transform spectrometer. The STS spectra were recorded at temperatures close to those encountered in the polar stratosphere and were fitted to a spectrum modelled by combining Mie scattering theory and published thin film refractive index data. Good agreement between model and laboratory data was found in the region 1300–13,000 cm −1 , but significant deviations were found in the region 750–1300 cm −1 .