Small satellite peers inside Hurricane Florence

A new experimental weather satellite no bigger than a cereal box got an inside look at Hurricane Florence in a test of technology that could influence the future of storm monitoring from space. The satellite took its first images of Hurricane Florence on Tuesday, Sept. 11, just hours after its instrument was turned on.

TEMPEST-D, which deployed into low-Earth orbit from the International Space Station in July, carries a state-of-the-art miniaturized microwave radiometer, an instrument that sees through the thick clouds to reveal the hidden interior of storms, just like a security scanner can see inside luggage at the airport.

The image taken by TEMPEST-D (Temporal Experiment for Storms and Tropical Systems Demonstration) captures Florence over the Atlantic Ocean, revealing the eye of the storm surrounded by towering, intense rain bands. The green areas highlight the extent of the rain being produced by the storm, with the most intense rain shown in yellow and red. The TEMPEST-D data is contrasted with a visible image of Florence that shows the familiar cyclone-shaped clouds of the storm but doesn't reveal what's inside.

TEMPEST-D's mission is to test new, low-cost technology that could be used in the future to gather more weather data and help researchers better understand storms. The level of detail in the small-satellite image is similar to what existing weather satellites produce.

"We were challenged to fit this instrument into such a small satellite without compromising data quality and were delighted to see it work right out of the box," said Sharmila Padmanabhan, who led the instrument development at NASA's Jet Propulsion Laboratory in Pasadena, California.

Shrinking weather satellites could one day help scientists provide more frequent updates on developing storms.

"TEMPEST-D paves the way for future missions where we can afford to fly many of these miniaturized weather satellites in constellations. Such a deployment would enable us to watch storms as they grow," said Steven Reising, the principal investigator for TEMPEST-D at Colorado State University.

TEMPEST-D is a technology-demonstration mission led by Colorado State University and managed by NASA's Jet Propulsion Laboratory in Pasadena, California, in partnership with Blue Canyon Technologies and Wallops Flight Facility, Virginia. The mission is sponsored by NASA's Earth Ventures program and managed by the Earth Science Technology Office. The radiometer instrument was built by JPL and employs high-frequency microwave amplifier technology developed by Northrop Grumman Corporation.

Related Links
TEMPEST-D at JPL
Bringing Order To A World Of Disasters
When the Earth Quakes
A world of storm and tempest

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