Sunday, 22 January 2012
Comparison of Rapid-Scan Radar Data and Photogrammetric Images of the 25 May 2010 Greeley County, Kansas Tornado During VORTEX2
Hall E (New Orleans Convention Center )
On 25 May, 2010, a complicated storm evolution over Greeley County, Kansas gave rise to a weak tornado that was short lived. This tornado was observed and sampled by the Verification of the Origins of Rotation in Tornadoes Experiment (VORTEX) 2 teams. High-resolution digital photographs and HD video, along with other platforms of observation, were collected during the tornadoes brief life. Relevant for this study, the Doppler on Wheels (DOW) 5 collected high-resolution rapid scan radar data at a range of 1km from the tornado and parent circulation.
Several digital images of the funnel and its associated cloud features have been photgrammetrically analyzed. This poster will present results that show the comparison of the visual aspects of the tornadic system (funnel width and cloud feature width) and calculated fields of the high-resolution rapid scan radar data. The study examines time-height versus parameters of azimuthal shear, couplet diameter, and couplet strength with accompanying funnel and cloud feature widths. The results of these comparisons will be presented.