Extended Abstract (328K)12.6
WSR-88D observed spatial spectra of turbulence in precipitation
Ming Fang, CIMMS/Univ. of Oklahoma, Norman, OK; and R. J. Doviak
Different algorithms are designed to isolate the turbulence from radar measured Doppler velocity. Spatial spectra along the quasi-horizontal direction are then obtained in stratiform rain, storms and squall lines. The slope of horizontal spectra in stratiform rain and storms is close to -5/3 on a log-log graph up to at least scales of 10 km and 7 km respectively. The spectrum in a squall line has a steeper slope than -5/3 up to scales at least 17 km. The scales at low wave number end on the spectra are so large that the spectra could not be due to three-dimensional isotropic turbulence but to two-dimensional turbulence.
Session 12, Radar
Thursday, 24 January 2008, 1:30 PM-3:00 PM, 226-227
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