TRMM Satellite Eyes the Eye of Etau

Credit: Credit: Hal Pierce, NASA Goddard Space Flight Center, Posted on: Thursday, 7 August 2003, 06:00 CDT Download full size image

The Tropical Rainfall Measuring Mission (TRMM) overflew the very core of intensifying Typhoon Etau in the western Pacific at noon on August 7. This remarkable TRMM image is constructed in three parts: The white background shows the counterclockwise spiral of the storm’s clouds, as imaged by the Visible and Infrared Scanner (VIRS). Superimposed on top of the clouds (wide outer swath) is the rain intensity, as detected by passive microwave energy using the TRMM Microwave Radiometer (TMI). The innermost swath shows the rain intensity as measured by the TRMM Precipitation Radar. Reds indicated the heaviest rain regions, with rain rates on the order of several inches per hour. Typhoon Etau appears as a very symmetric storm—like a giant, slowly spinning pinwheel—with a well defined, nearly closed eye. During the time of this image the storm had achieved Typhoon 2 intensity. In one sweep, the TRMM satellite was able to capture the detailed cloud structure, as well as the entire rainfal

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