Upgraded Hurricane Hunters Ready for Storm Season

WC-130J aircraft assigned to the 403rd Wing received the last of 10 radiometers Feb. 15 at Keesler Air Force Base, Miss. The stepped-frequency microwave radiometer, or smurf, is a state-of-the-art instrument designed to continuously and accurately measure the winds at the ocean's surface directly below the aircraft. (Air Force photo.)

On the Home Front:

Smurfs up!

KEESLER AIR FORCE BASE, Miss., Feb 23, 2008 (AFPN) -- When Hurricane Hunter crews from Keesler Air Force Base track severe storms in 2008 with their WC-130J Hercules aircraft, they will do so with the latest equipment received Feb. 15 that will collect data and provide weather warnings.

Members of Air Force Reserve Command's 403rd Wing took delivery of the last of 10 stepped-frequency microwave radiometers, known as "smurfs," that are state-of-the-art instruments designed to continuously and accurately measure the winds at the ocean's surface directly below an aircraft.

The technologically advanced WC-130J began to be upgraded last year with the smurf, enhancing the lifesaving storm data collection by the only operational weather reconnaissance squadron in the world. Airmen of the 53rd Weather Reconnaissance Squadron use WC-130Js to track hurricanes, tropical depressions and severe weather.

"The SFMR will be the biggest advance I can think of to improve hurricane intensity forecasts," said Max Mayfield, the National Hurricane Center former director.

As a plane flies through a storm, the SFMR senses microwave radiation naturally emitted from foam created on the sea by winds at the surface. Computers then determine wind speeds based on the levels of microwave radiation detected.

In the past, crews extrapolated wind speeds at the aircraft's altitude or from a dropsonde released from the aircraft.

The smurf directly measures the surface winds and is not confined to a single point like the dropsonde. This constant measurement of surface winds gives National Hurricane Center officials a more complete picture of the storm.

The smurf can also determine rainfall rates within a storm system. This, in addition to wind speeds at flight level, provides structural detail of the storm.

The Hurricane Hunters improve the accuracy of the National Hurricane Center's forecast by 30 percent, a number likely to rise with the use of the smurf.

(Story from Air Force Reserve Command News Service.)

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