Cloud droplet nucleation by crude oil smoke and coagulated crude oil/wood smoke particles |
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| Institution: | 1. Department of Applied Physics, University of Granada, 18071 Granada, Spain;2. Andalusian Institute for Earth System Research (IISTA-CEAMA), University of Granada, Autonomous Government of Andalusia, 18006 Granada, Spain;3. Grupo de Óptica Atmosférica (GOA), Universidad de Valladolid, 47011 Valladolid, Spain;1. Atmospheric and Environmental Research, Lexington, MA, 02421, USA;2. Center for Astrophysics, Harvard & Smithsonian, Atomic and Molecular Physics Division, Cambridge, MA 02138, USA;1. Centre for Precision Engineering, Materials and Manufacturing Research (PEM Centre), Institute of Technology Sligo, Ash Lane, Sligo F91 YW50, Ireland;2. I-Form, Advanced Manufacturing Research Centre, CSCB Building, O''Brien Centre for Science (East), University College Dublin, Belfield, Dublin 4, Ireland |
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| Abstract: | Cloud condensation nuclei (CCN) measurements are reported, taken on smoke aerosol particle samples generated from the combustion of small quantities of high- and low-sulfur crude oils. The smoke samples were stored in 6 m3 aging bags, and were analyzed over aging times of more than 50 h. Up to 58% of the high-sulfur crude oil smoke particles were found to be active as CCN at water supersaturation of 1% or less, while 20% were active in the low-sulfur case. Ion chromatography data show the presence of small quantities of inorganic and organic compounds which may be the cause of the CCN activity. The low-sulfur crude oil smoke particles were mixed with wood smoke particles, to see if the resulting aggregates are active as CCN. |
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