![]() ![]() Generally outward (divergent) flow is present from 0 < R < 250 m. (bottom) Azimuthally averaged V t and V r as a function of radius. GBV TD cross sections extend from 0 < R < 1,000 m horizontally and 0 < z < 250 m AGL vertically. (top) Vertical cross sections illustrating maximum V t at R = 100–200 m and W < 0 from 0 < R < 200 m. (right) FFT of Delta-V with peak energy at 66 and 108 s, suggestive of rotating asymmetry in vortex.Īxisymmetric radial and tangential wind profiles derived from the RSDOW using the GBV TD technique, using the lowest clutter-free scan near 100 m AGL. (left) Oscillation of tornado intensity defined by maximum Delta-V = V d (outbound) − V d (inbound). Strong inward and upward motion is present from 35 < R < 120 m. Data collected during tornado approach (departure) are indicated with solid (open) circles. Profiles from data (marked lines) and Burgers–Rott modeled (unmarked lines) V t, V r, V, and W versus R. Zoomed in video image of pole 100S snapping at 2211:38. Modeled winds at the TIV (black) and at pole 100S (green). TIV-measured wind speeds inside tornado every 1 s (blue), averaged for 3 s (red). #WEATHER RADAR IN MOTION LUBBOCK TEXAS FULL#Wind barbs show measurements of V g at 3.5 m AGL with pennants indicating 50 m s −1, full barbs 10 m s −1, and half barbs 5 m s −1. The tornado, with a radius of maximum winds of 100 m, propagates toward 110° at 7.5 m s −1, with the center of circulation passing 35 m north-northeast of the TIV, resulting in measurements through a chord of the tornado as shown. Schematic illustration of transect of tornado by the TIV. Black tick marks are spaced at 200-m intervals. A moderate-intensity (yellow and brown) reflectivity debris ring surrounding tornado is clearly visible, as is higher reflectivity (red) associated with rain and hail observed at the TIV before and after the tornado's passage. The center of rotation of the tornado, surrounded by an approximately 105-m region between maxima in V d (black dots and circles, labeled with seconds after 2211:00), crosses 35 m northnortheast of the TIV at 2211:31, resulting in a transect of the core flow region (red arrow) from 2211:18 to 2211:43. (left) Radar reflectivity (dB Z) and (right) Doppler velocity ( V d) in the Goshen County, Wyoming, tornado at (top) 2211:23, (middle) 2211:34, and (bottom) 2212:03 as observed by the Rapid-Scan DOW radar as the tornado crosses over the TIV (yellow dot) and pole 100S (red dot). The tornado center passes from west to east, 35 m north of the TIV at closest approach, at 2211:29. Four Corners Road (brown line), and Highway 85 (red line). Also shown are terrain contours (brown, in feet). Labels adjacent to red dots are time in minutes after 2200 (all times are UTC). For more information, access Doppler on Wheels (RSDOW), Doppler on Wheels 7 (DOW7) (blue dots), and Tornado Intercept Vehicle (TIV) (green dot), and track of the center of rotation of the tornado (black line). #WEATHER RADAR IN MOTION LUBBOCK TEXAS SERIES#An extended series of websites includes comprehensive career development resources. AAAS also acts as an umbrella organization for a federation of more than 270 affiliated scientific groups. Public engagement activities are creating an open dialogue with scientists on societal issues such as global climate change. ![]() Science education initiatives have laid the groundwork for standards-based learning and provide web-based support tools for teachers. Science and policy programs include the major annual forum on Science & Technology policy, S&T policy fellowships within the US Congress and government agencies, and the tracking of US funding for R&D research. Global efforts include programs and partnerships worldwide, from Asia to Europe to Africa, and extensive work in human rights using geospatial technology to corroborate abuses. The mission, to "advance science, engineering, and innovation throughout the world for the benefit of all people," has propelled the organization to the forefront of national and international initiatives. AAAS, founded in 1848, has evolved into the world's largest multidisciplinary scientific society with nearly 130,000 members and subscribers. ![]()
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