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WATER RESOURCES RESEARCH,
VOL. 42,
W11503,
5 PP., 2006
doi:10.1029/2006WR004986
Efficient simulation of a space-time Neyman-Scott rainfall model
School of Civil and Environmental Engineering, University of Adelaide, Adelaide, Australia
School of Mathematical Sciences, University of Adelaide, Adelaide, Australia
School of Civil and Environmental Engineering, University of Adelaide, Adelaide, Australia
Existing space-time Neyman-Scott models characterize rainfall as the arrival of rain cells, clustered in time and independently distributed in space. Each cell is described as a cylinder having a random intensity (height) and random radial coverage. With this formulation it is possible to have cells with centers lying outside of a target simulation region yet having radii large enough to cover points within the region. To avoid significant boundary effects, it is necessary to include these points in the simulation. However, this can introduce inefficiency into the algorithm that is computationally restrictive. To overcome this, an efficient method is derived and demonstrated to improve computational performance.
Received 21 February 2006; accepted 27 July 2006; published 9 November 2006.
Citation: (2006), Efficient simulation of a space-time Neyman-Scott rainfall model, Water Resour. Res., 42, W11503, doi:10.1029/2006WR004986.
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