COMPARISON OF TWO METHODS OF DETERMINING OPTICAL SCATTERING PROPERTIES OF THE ATMOSPHERE IN FIELD EXPERIMENTS

Authors
  1. Bissonnette, L.
  2. Cantin, A.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN)
Abstract
Two methods of determining the scattering coefficient and the scattering phase function of the atmosphere during field experiments are discussed. The first one derives these quantities from particle size distribution measurements and the second one, from direct angular scattering measurements. The comparison of results over 27 experimental runs show differences of 100% in the phase function and as large as 300% in the scattering coefficient. The principal cause for these differences is the inaccuracy of the size distribution probes that overestimate the particle concentration. There is a need to improve the precision of these probes since they have the advantage over the direct angular scattering measurement technique of being simple to operate and of providing wavelength-independent results.
Report Number
DREV-4483/88 —
Date of publication
15 Feb 1988
Number of Pages
56
DSTKIM No
88-01469
CANDIS No
54703
Format(s):
Microfiche filmed at DSIS;Originator's fiche received by DSIS;Hardcopy

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