HR: 1340h
AN: AE33A-0182    [Abstracts]
TI: Preliminary Comparison of Narrow Bipolar Events With TRMM/TMI 85-GHz Ice-scattering Signature
AU: * Jacobson, A R
EM: ajacobson@lanl.gov
AF: Los Alamos National Laboratory, Mail Stop D436, Los Alamos, NM 87545 United States
AU: Boeck, W
EM: wboeck@lanl.gov
AF: Los Alamos National Laboratory, Mail Stop D436, Los Alamos, NM 87545 United States
AB: The Edot array has provided ground-truth measurements, mainly in the Florida region, of lightning processes also observed by the FORTE satellite. Edot records and stores the entire wideband (1 Megasample/sec) sferic waveform. Waveform analysis allows identification of "Narrow Bipolar Events" or NBEs, a unique form of fast (~10 microsecond-duration) intracloud discharge that is not preceded by a leader phase. NBEs appear to be related to a class of extremely intense Very High Frequency (30-300 MHz) emissions that can be triggered upon using radio-receiver instruments in space. We will analyze the relationship of NBEs to the ice-scattering signature imagery provided by the TRMM/TMI microwave radiometer. The goal is to compare incidence and morphology between intense intracloud lightning and centers of deep, active convection.
DE: 3324 Lightning
DE: 3329 Mesoscale meteorology
DE: 3374 Tropical meteorology
DE: 3314 Convective processes
SC: Atmospheric and Space Electricity [AE]
MN: 2004 AGU Fall Meeting