Electrical detection of thunderstorm microbursts

Details Electrical detection of thunderstorm microbursts Electrical detection of thunderstorm microbursts

1987-11-02

1990-02-20

Ruehl, Charles A.

Measuring and testing

Meteorology

Electric disturbance

340601, 324 72, G01W 100

Patent

active

049015648

ABSTRACT:
An array of sensors responsive to atmospheric electrostatic fields is deployed, preferably with the sensors elevated above the ground. Suitable sensors are corona point sensors having a stainless steel needle. The corona current signals from the sensors are digitized and processed to determine the peak in the rate of sharp discontinuities in the electrostatic field. The peak in the rate of sharp discontinuities precedes a thunderstorm microburst by several minutes. The signal processing apparatus also generates equipotential contour maps of electrostatic field for spatially locating a microburst. The latter signal may also serve as a predictor for windshear since anomalous electric fields caused by charge carrying downdrafts may occur without lightning.

REFERENCES:
patent: 3215997 (1965-11-01), Leavitt et al.
patent: 3790884 (1974-02-01), Kohl
patent: 4023408 (1977-05-01), Ryan et al.
patent: 4276576 (1981-06-01), Uman et al.

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