Estimation of spatial–temporal rainfall distribution using remote sensing techniques

Rainfall–runoff modeling provides an opportunity to easily simulate the response of a watershed, thus providing an option for sustainable water resources management Analysis of rainfall–runoff relationships in a catchment forms the basis of hydrological modeling. However, rainfall is a highly dynamic process, constantly changing in form and intensity as it passes over a given area. Traditionally, rainfall is measured using limited rain gauges at ground stations and often, the dynamics are not captured and yet it is the main input variable in any hydrological modeling. Without improved rainfall estimation, flow discharge estimates from rainfall– runoff relationship in both gauged and ungauged catchments particularly in arid and semi-arid regions remain a major challenge. There for application of remote sensing information becomes crucial in the process of estimating rainfall patterns of any areas.

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Keyword: remote sensing ، rainfall ، Estimation ، catchments