The Effect of Non-Lambertian Surface Reflectance on Aerosol Radiative Forcing

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Surface reflectance is an important factor in determining the strength of aerosol radiative forcing. Previous studies of radiative forcing assumed that the reflected surface radiance is isotropic and does not depend on incident illumination angle. This Lambertian reflection model is not a very good descriptor of reflectance from real land and ocean surfaces. In this study we present computational results for the seasonal average of short and long wave aerosol radiative forcing at the top of the atmosphere and at the surface. The effect of the Lambertian assumption is found through comparison with calculations using a more detailed bi-direction reflectance ... continued below

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Ricchiazzi, P.; O'Hirok, W. & Gautier, C. March 18, 2005.

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Surface reflectance is an important factor in determining the strength of aerosol radiative forcing. Previous studies of radiative forcing assumed that the reflected surface radiance is isotropic and does not depend on incident illumination angle. This Lambertian reflection model is not a very good descriptor of reflectance from real land and ocean surfaces. In this study we present computational results for the seasonal average of short and long wave aerosol radiative forcing at the top of the atmosphere and at the surface. The effect of the Lambertian assumption is found through comparison with calculations using a more detailed bi-direction reflectance distribution function (BRDF).

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OSTI as DE00841476

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  • Fifteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting, Daytona Beach, FL (US), 03/14/2005--03/18/2005

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  • Report No.: none
  • Office of Scientific & Technical Information Report Number: 841476
  • Archival Resource Key: ark:/67531/metadc788600

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  • March 18, 2005

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  • Dec. 3, 2015, 9:30 a.m.

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  • Feb. 2, 2016, 5:06 p.m.

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Ricchiazzi, P.; O'Hirok, W. & Gautier, C. The Effect of Non-Lambertian Surface Reflectance on Aerosol Radiative Forcing, article, March 18, 2005; United States. (digital.library.unt.edu/ark:/67531/metadc788600/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.