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Programming a hillslope water movement model on the MPPA physically based numerical model was developed of heat and moisture flow within a hillslope on a parallel architecture computer, as a precursor to a model of a complete catchment. Moisture flow within a catchment includes evaporation, overland flow, flow in unsaturated soil, and flow in saturated soil. Because of the empirical evidence that moisture flow in unsaturated soil is mainly in the vertical direction, flow in the unsaturated zone can be modeled as a series of one dimensional columns. This initial version of the hillslope model includes evaporation and a single column of one dimensional unsaturated zone flow. This case has already been solved on an IBM 3081 computer and is now being applied to the massively parallel processor architecture so as to make the extension to the one dimensional case easier and to check the problems and benefits of using a parallel architecture machine.
Document ID
19870017101
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Devaney, J. E. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Irving, A. R. (Science Applications Research Lanham, Md., United States)
Camillo, P. J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Gurney, R. J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 5, 2013
Publication Date
July 1, 1987
Publication Information
Publication: Frontiers of Massively Parallel Scientific Computation
Subject Category
Earth Resources And Remote Sensing
Accession Number
87N26534
Funding Number(s)
CONTRACT_GRANT: NAS5-28200
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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