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Multi-dimensional radiative transfer computations using a scalable parallel implementation of the discrete-ordinates method

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3 Author(s)
Haferman, J.L. ; Dept. of Mech. Eng., Iowa Univ., Iowa City, IA, USA ; Smith, T.F. ; Krajewski, W.F.

A scalable parallel implementation of the discrete-ordinates method for the solution of the radiative transfer equation is discussed. The approach presented uses a parallel architecture to solve the radiative transfer equation in three-dimensional Cartesian geometries. Two numerical experiments are presented. The first examines the effect of grid size and number of processors on computational time for a given problem, whereas the second experiment examines the effect of quadrature order on computation times. For both experiments, the parallel algorithm is used to compute upwelling brightness temperatures from a precipitating cloud. Using the parallel model, brightness temperature fields for three-dimensional precipitating atmospheres can be computed much more quickly than by a serial model

Published in:

Geoscience and Remote Sensing Symposium, 1994. IGARSS '94. Surface and Atmospheric Remote Sensing: Technologies, Data Analysis and Interpretation., International  (Volume:3 )

Date of Conference:

8-12 Aug 1994