Document Detail

Influence of the atmosphere on space measurements of directional properties.
MedLine Citation:
PMID:  18195864     Owner:  NLM     Status:  PubMed-not-MEDLINE    
To compare measurements performed in different geometrical conditions, one must take into account the angular anisotropy of the reflection properties of natural surfaces. As use of the exact boundary conditions in the radiative transfer codes seems prohibitive, a simple but accurate formulation of the problem has been sought. In this paper, two average angular reflectances are defined from which the reflected radiance may be deduced for any distribution of the downward radiance. Calculations made for different atmospheric models show that the solar directionality is partly preserved in the downward radiation field, so that the average reflectances can be written as a linear combination of actual reflectance and spherical albedo of the surface. Finally, the feasibility of detecting directional properties from space measurements is discussed.
D Tanre; M Herman; P Y Deschamps
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Applied optics     Volume:  22     ISSN:  0003-6935     ISO Abbreviation:  Appl Opt     Publication Date:  1983 Mar 
Date Detail:
Created Date:  2008-01-15     Completed Date:  2009-02-05     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0247660     Medline TA:  Appl Opt     Country:  United States    
Other Details:
Languages:  eng     Pagination:  733-41     Citation Subset:  -    
Universite des Sciences et Techniques de Lille, Laboratoire d'Optique Atmospherique, 59655 Villeneuve d'Ascq CEDEX, France.
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