NASA finds heavy rain potential in typhoon Bualoi over Marianas

phys.org | 5/4/2002 | Staff
bungienetbungienet (Posted by) Level 3
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Typhoon Bualoi was lashing the Marianas Islands in the Northwestern Pacific Ocean when NASA's Aqua satellite passed overhead and analyzed the cloud top temperatures to give forecasters insight into the storm's rain potential.

On Oct. 22, a Tropical Storm Warning remained in effect for the islands of Agrihan, Pagan and Alamagan in the Northern Mariana Islands.

Ways - NASA - Cyclones - Data - Temperature

One of the ways NASA researches tropical cyclones is by using infrared data that provides temperature information. Cloud top temperatures identify where the strongest storms are located. The stronger the storms, the higher they extend into the troposphere, and the colder the cloud top temperatures.

Tropical cyclones do not always have uniform strength, and some sides have stronger sides than others, so knowing where the strongest sides of the storms are located helps forecasters. NASA then provides data to tropical cyclone meteorologists so they can incorporate the data in their forecasts.

Oct - UTC - Oct - Pm - EDT

On Oct. 22 at 0335 UTC (Oct. 21 at 11:35 p.m. EDT) NASA's Aqua satellite analyzed the storm using the Atmospheric Infrared Sounder or AIRS instrument. AIRS found coldest cloud top temperatures as cold as or colder 210 Kelvin (purple) which is minus 81 degrees Fahrenheit (minus 63.1 degrees Celsius) around the center. NASA research has shown that cloud top temperatures that...
(Excerpt) Read more at: phys.org
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