Rainfall disaggregation for hydrological modeling: is there a need for spatial consistence?

Spatial disaggregation of rainfall data

Use of output from global Circulation Models (GCMs) by regional or small scale rainfall-runoff models necessitates the disaggregation of the hydrological information available from GCMs to smaller scales. The hydrological processes of interest commonly occur at much smaller scales than those being modelled by GCMs. The present work examines the disaggregation of areally averaged monthly rainfal...

A stochastic spatial-temporal disaggregation model for rainfall

A stochastic model for disaggregating spatial-temporal rainfall data is presented. In the model, the starting times of rain cells occur in a Poisson process, where each cell has a random duration and a random intensity. In space, rain cells have centres that are distributed according to a two dimensional Poisson process and have radii that follow an exponential distribution. The model is fitted...

Disaggregation of spatial rainfall fields for hydroloigcal modelling

Meteorological models generate fields of precipitation and other climatological variables as spatial averages at the scale of the grid used for numerical solution. The grid-scale can be large, particularly for GCMs, and disaggregation is required, for example to generate appropriate spatial-temporal properties of rainfall for coupling with surface-boundary conditions or more general hydrologica...

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Is There a Need for Reform?

The very notion of "reform of the international monetary system" is a very modern one in two respects. "Reform" is a conscious act, an act of volition and coordinated will, as distinguished from a series of piecemeal changes that occur as individual actors--banks, business firms, governments--respond to new circumstances, leading over time to change, but not to conscious reform. Second, the not...