Fine-Scale Doppler Radar Observations of Tornadoes |
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| Authors: | J Wurman JM Straka EN Rasmussen |
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| Institution: | J. Wurman, School of Meteorology, University of Oklahoma, 100 East Boyd Street, Norman, OK 73019, USA. J. M. Straka, School of Meteorology, Center for Analysis and Prediction of Storms and Cooperative Institute for Mesoscale Meteorological Studies, University of Oklahoma, 100 East Boyd Street, Norman, OK 73019, USA. E. N. Rasmussen, National Severe Storms Laboratory, 1313 Halley Circle, Norman, OK 73069, USA. |
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| Abstract: | Observations obtained with a mobile pencil-beam Doppler radar revealed many previously unresolved structures within tornadic storms and tornadoes and helped verify various aspects of conceptual models. Radar data from the parent circulations indicate the existence of spiral reflectivity bands, intense radial wind shear zones, and multiple larger-scale velocity maxima. Tornado structures observed include debris shields, clear axial (eye) regions, multiple reflectivity bands surrounding the center of the eye, and occasional reflectivity protrusions into the eye. Velocity and reflectivity data from tornado-scale circulations show evidence of axial downdrafts. |
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