![](https://webarchive.library.unt.edu/eot2008/20081006101923im_/http://veimages.gsfc.nasa.gov//19400/kompasu_TRMM2004198_tn.jpg)
Images & Animations
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Credit
Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang (SSAI/NASA GSFC).
The Tropical Rainfall Measuring Mission tracked Tropical Storm Kompasu as it developed over the Pacific Ocean from July 14 until it moved ashore on July 16, 2004.
- Large Images: <LI> July 14, 2004 (390 KB) <LI> July 16, 2004 (431 KB)
- Animations: <LI> MPEG-1 (.mpg) format (892 KB) <LI> Quicktime (.mov) format (529 KB)
The Tropical Rainfall Measuring Mission or TRMM satellite has so far continued to fulfill its mission of monitoring rainfall over the global tropics since its launch in November of 1997. With its array of passive and active sensors, TRMM has also been providing a unique perspective on tropical cyclones. Such was the case with Kompasu. The first image, top, was taken at 22:21 UTC on July 14, 2004, after Kompasu had entered the northern South China Sea. Kompasu was then a tropical storm with maximum sustained winds estimated at 45 knots (52 mph) by the Joint Typhoon Warning Center. The image shows the horizontal distribution of rain intensity. Rain rates in the center swath are from the TRMM Precipitation Radar (PR), the first and only precipitation radar in space, and those in the outer swath are from the TRMM Microwave Imager (TMI). The rain rates are overlaid on infrared (IR) data from the TRMM Visible Infrared Scanner (VIRS). This particular image reveals only a partially organized storm. Some banding is evident in the rain field (blue and green arcs), but the storm does not have an eye and nor is there any significant rainfall nears its center. This indicates that Kompasu is not likely to intensify very rapidly.
The second image was taken at 05:35 UTC on the 16th just as Kompasu was about to hit the coast of China. The storm is still lacking an eye, and rain field is very asymmetrical with most of the rain located south or southeast of the center (blue, green and red areas). The heaviest rain (red) appears just south of the center. Maximum sustained winds at this time were only estimated to be about 40 knots (46 mph).
Another image taken at the same time on July 16 shows a vertical cross section through the center of the storm from the PR looking northeast. It shows the deeper, more intense rain (dark red area) southeast of the center on the right and only weak, shallow rain (small mainly green area) northwest of the center on the left.
TRMM data and images are routinely used by operational centers such as the NOAA Hurricane Prediction Center and the Joint Typhoon Warning Center.
TRMM is a joint mission between NASA and the Japanese space agency JAXA.
Metadata
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Sensor
TRMM/TRMM -
Start Date
2004-07-16 -
Event Start Date
2004-07-10 -
NH Image ID
12254 -
NH Event ID
10425 -
NH Posting Date
2004-07-19