OSA's Digital Library

Applied Optics

Applied Optics


  • Vol. 45, Iss. 26 — Sep. 10, 2006
  • pp: 6750–6761

Aerosol extinction models based on measurements at two sites in Sweden

Timo Kaurila, Arne Hågård, and Rolf Persson  »View Author Affiliations

Applied Optics, Vol. 45, Issue 26, pp. 6750-6761 (2006)

View Full Text Article

Enhanced HTML    Acrobat PDF (1119 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



Two aerosol extinction models have been developed using statistical analysis of long-term optical transmission measurements in Sweden performed at two locations from July 1977 to June 1982. The aerosol volume extinction coefficient for infrared (IR) radiation is calculated by the models with visibility, temperature, and air pressure as input parameters. As in the MODTRAN model, the IR extinction coefficient is proportional to the coefficient at 550   nm , which depends on the visibility. In the new models, the wavelength dependence of the extinction also depends on the visibility. The models predict significantly higher attenuation in the IR than does the Rural aerosol model from MODTRAN, which is commonly used. Comparison with the Maritime model shows that the new models predict lower extinction values in the 3 5 μ m region and higher values in the 8 1 2 μ m region. The uncertainties in terms of variance levels are calculated by the models. The properties of aerosols, and thereby the extinction coefficient, are partly correlated to local meteorological parameters, which enables the calculation of a mean predicted value. A substantial part of the variation is, however, caused by conditions in the source area and along the trajectory path of the aerosols. They are not correlated to the local meteorological parameters and therefore cause the variance in the models.

© 2006 Optical Society of America

OCIS Codes
(010.0010) Atmospheric and oceanic optics : Atmospheric and oceanic optics
(010.1110) Atmospheric and oceanic optics : Aerosols
(010.1310) Atmospheric and oceanic optics : Atmospheric scattering
(010.1320) Atmospheric and oceanic optics : Atmospheric transmittance
(290.2200) Scattering : Extinction

Original Manuscript: January 3, 2006
Revised Manuscript: March 21, 2006
Manuscript Accepted: March 23, 2006

Timo Kaurila, Arne Hågård, and Rolf Persson, "Aerosol extinction models based on measurements at two sites in Sweden," Appl. Opt. 45, 6750-6761 (2006)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. F. X. Kneizy, L. W. Abreu, G. P. Anderson, J. H. Chetwynd, E. P. Shettle, A. Berk, L. S. Bernstein, D. C. Robertson, P. Acharya, L. S. Rothman, J. E. A. Selby, W. O. Gallery, and S. A. Clough, The MODTRAN 2/3 Report and LOWTRAN 7 Model (Phillips Laboratory, Geophysics Directorate, PL/GPOS, Hanscom Air Force Base, Mass., 1996).
  2. Unpublished results and measurements at FOA (former name of FOI) before 1970. Notes from internal meetings.
  3. B. Nilsson, "Model of the relation of IR aerosol extinction to weather parameters," in Infrared Technology XVIII, B. F. Andresen and F. D. Shepherd, eds., Proc. SPIE 1762, 239-250 (1992). [CrossRef]
  4. B. Nilsson, "Model of the relation between aerosol extinction and meteorological parameters," Atmos. Environ. 28, 815-825 (1994). [CrossRef]
  5. L. Robertson, J. Langner, and M. Engardt, "An Eulerian limited-area atmospheric transport model," J. Appl. Meteorol. 38, 190-210 (1999). [CrossRef]
  6. H. Hass, M. van Loon, C. Kessler, R. Stern, J. Matthijsen, F. Sauter, Z. Zlatev, J. Langner, V. Foltescu, and M. Schaap, Aerosol Modeling: Results and Intercomparison from European Regional-Scale Modeling Systems (EUROTRAC ISS, Munich, Germany, 2003).
  7. M. E. Thomas and D. D. Duncan, "Atmospheric transmission," in The Infrared & Electro-Optical Systems Handbook Vol. 2, G.Smith, ed. (Infrared Information Analysis Center and SPIE Optical Engineering, 1993), pp. 1-156.
  8. A. Hågård and R. Persson, "Infrared transmission measurement in the atmosphere," in Infrared Technology XVIII, B. F. Andresen and F. D. Shepherd, eds., Proc. SPIE 1762, 266-275 (1992). [CrossRef]
  9. F. Jani, Statistical Analysis of Measured Atmospheric Optical Transmission Data, final project, ISRN-LiU-MAT-D-95/01-SE (Department of Mathematics, Linköping University, Linköping, Sweden, 1995).
  10. B. Nilsson, "Meteorological influence on aerosol extinction in the 0.2-40 μm wavelength range," Appl. Opt. 18, 3457-3472 (1979). [CrossRef] [PubMed]
  11. R. Persson and T. Kaurila, Aerosol Attenuation Model for Scandinavian Environment: Based on Measurements at Lövsättra in Uppland, FOI-R-0689-SE, ISSN 1650-1942 (FOI, Linköping, Sweden, 2002). [PubMed]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited