Abstract

Conventional raingauge networks have proven to be inadequate to describe the temporal and spatial distribution of rainfall, but raingauge data combined with radar data can provide a very useful technique for monitoring the quantitative distribution of rainfall in time and space. A square grid mean areal rainfall model is developed, which utilizes raingauge measurements and a Kalman filter state-space model of the Z–R relationship from radar measurements. The developed method applies in areas where radar information exists, and it has been tested for only one watershed. Key words: space-time rainfall model, radar, raingauge, Kalman filter.

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