Eldering, A. and Ogren, J. A. and Chowdhury, Z. and Hughes, L. S. and Cass, G. R. (2002) Aerosol optical properties during INDOEX based on measured aerosol particle size and composition. Journal of Geophysical Research D, 107 (D22). Art. No. 8001. ISSN 2169-897X. doi:10.1029/2001JD001572. https://resolver.caltech.edu/CaltechAUTHORS:20141027-152138208
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Abstract
The light scattering and light absorption as a function of wavelength and relative humidity due to aerosols measured at the Kaashidhoo Climate Observatory in the Republic of the Maldives during the INDOEX field campaign has been calculated. Using size-segregated measurements of aerosol chemical composition, calculated light scattering and absorption has been evaluated against measurements of light scattering and absorption. Light scattering coefficients are predicted to within a few percent over relative humidities of 20–90%. Single scattering albedos calculated from the measured elemental carbon size distributions and concentrations in conjunction with other aerosol species have a relative error of 4.0% when compared to measured values. The single scattering albedo for the aerosols measured during INDOEX is both predicted and observed to be about 0.86 at an ambient relative humidity of 80%. These results demonstrate that the light scattering, light absorption, and hence climate forcing due to aerosols over the Indian Ocean are consistent with the chemical and physical properties of the aerosol at that location.
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| Additional Information: | © 2002 by the American Geophysical Union. Received 3 December 2001; Revised 11 May 2002; Accepted 9 July 2002; Published 21 November 2002. This material is based upon activities supported by the National Science Foundation under Agreement ATM- 9732665 (Caltech) and ATM-9612888 (NOAA), with additional support from the Caltech Center for Air Quality Analysis. Any opinions, findings, and conclusions or recommendations expressed in this publication are those of the authors and do not necessarily reflect the views of the National Science Foundation. A portion of this work was performed at the Jet Propulsion Laboratory, California Institute of Technology, under contract with NASA. | |||||||||
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| Subject Keywords: | aerosol; INDOEX; single-scattering albedo; extinction coefficient | |||||||||
| Issue or Number: | D22 | |||||||||
| DOI: | 10.1029/2001JD001572 | |||||||||
| Record Number: | CaltechAUTHORS:20141027-152138208 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20141027-152138208 | |||||||||
| Official Citation: | Eldering, A., Ogren, J. A., Chowdhury, Z., Hughes, L. S., & Cass, G. R. (2002). Aerosol optical properties during INDOEX based on measured aerosol particle size and composition. Journal of Geophysical Research: Atmospheres, 107(D22), 8001. doi: 10.1029/2001jd001572 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 50881 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Joanne McCole | |||||||||
| Deposited On: | 27 Oct 2014 22:53 | |||||||||
| Last Modified: | 10 Nov 2021 19:02 |
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