Publication Abstracts

Pandey et al. 2015

Pandey, A., R.K. Chakrabarty, L. Liu, and M.I. Mishchenko, 2015: Empirical relationships between optical properties and equivalent diameters of fractal soot aggregates at 550 nm wavelength. Opt. Express, 23, no. 24, A1354-A1362, doi:10.1364/OE.23.0A1354.

Soot aggregates (SAs) — fractal clusters of small, spherical carbonaceous monomers — modulate the incoming visible solar radiation and contribute significantly to climate forcing. Experimentalists and climate modelers typically assume a spherical morphology for SAs when computing their optical properties, causing significant errors. Here, we calculate the optical properties of freshly-generated (fractal dimension Df = 1.8) and aged (Df = 2.6) SAs at 550 nm wavelength using the numerically-exact superposition T-Matrix method. These properties were expressed as functions of equivalent aerosol diameters as measured by contemporary aerosol instruments. This work improves upon previous efforts wherein SA optical properties were computed as a function of monomer number, rendering them unusable in practical applications. Future research will address the sensitivity of variation in refractive index, fractal prefactor, and monomer overlap of SAs on the reported empirical relationships.

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BibTeX Citation

@article{pa04500c,
  author={Pandey, A. and Chakrabarty, R. K. and Liu, L. and Mishchenko, M. I.},
  title={Empirical relationships between optical properties and equivalent diameters of fractal soot aggregates at 550 nm wavelength},
  year={2015},
  journal={Opt. Express},
  volume={23},
  number={24},
  pages={A1354--A1362},
  doi={10.1364/OE.23.0A1354},
}

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RIS Citation

TY  - JOUR
ID  - pa04500c
AU  - Pandey, A.
AU  - Chakrabarty, R. K.
AU  - Liu, L.
AU  - Mishchenko, M. I.
PY  - 2015
TI  - Empirical relationships between optical properties and equivalent diameters of fractal soot aggregates at 550 nm wavelength
JA  - Opt. Express
VL  - 23
IS  - 24
SP  - A1354
EP  - A1362
DO  - 10.1364/OE.23.0A1354
ER  -

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