Doppler on Wheels

Center for Severe Weather Research

The Center For Severe Weather Research (CSWR), a non-profit research organization located in Boulder, Colorado, funded primarily by the National Science Foundation (NSF), with close collaborations with the National Center for Atmospheric Research (NCAR) and the Pennsylvania State University. CSWR's scope includes The Doppler On Wheels (DOW), Bistatic Network, and Rapid-Scan programs, and related tornado, hurricane, and convective initiation studies, and educational efforts. The DOWs are available through the NSF Deployment Pool.

Doppler On Wheels :: Dual-Polarization, Dual-Frequency

The Center for Severe Weather Research (CSWR) two Doppler On Wheels (DOW) dual-polarization, dual-frequency radars are truck-borne quick-scanning dual-polarization Doppler radars, frequently deployed in a multiple-Doppler network. The rapidly adaptable/targetable DOW network is able to deploy close to, or inside, phenomena such as tornadoes, hurricanes, microbursts, snow bands, and other quickly evolving, remote, and/or hazardous weather in order to obtain fine-scale (spatial and temporal) and near-ground observations.

The CSWR dual-polarization dual-frequency network comprises two DOW radars, DOW6 and DOW7. These radars employ dual-250 kW transmitters for high sensitivity to clear air returns. X-band, 3-cm, 9 GHz transmissions are moderately able to penetrate through intense precipitation. 2.44 m antennas result in 0.9 degree beam widths and are scanned at up to 50 degrees/second resulting in 7 second updates at a single elevation angle (8.5 rpm). Range gating as short as 12.5 m allows for very fine-scale resolution of mesoscale and smaller phenomena.

The DOW can remain nearly indefinitely on station, even in severe conditions such as those in hurricanes, blizzards, supercells, mesoscale convective systems, etc. to obtain uninterrupted data during prolonged events.

» Please visit CSWR's Doppler On Wheels Page

Engineering Tornado Intercepts

James Turner for O'Reilly Media interviews Dr. Joshua Wurman, the President of the Center for Severe Weather Research, about the Rapid Dows.