Abstract: The high spatial resolution and global coverage of aspaceborne microwave scatterometer make it a powerfulinstrument to study phenomena ranging from typhoons toEl Nino Southern Oscillations which have regional andshort term economic and ecological impacts as well aseffects on long term and global climate changes. Inthis report, the application of scatterometer data, byitself, to study the intensity and the evolution of atyphoon is demonstrated. The potential of combiningwind vector and precipitable water derived from twospaceborne sensors to study the hydrologic balance inthe tropics is discussed. The role of westerly windbursts as a precursor of anomalous warming in theequatorial Pacific is investigated with coincident datafrom microwave scatterometer, altimeter, andradiometer. !9
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