PPT Slide
DDPDA History
Predicting and Detecting Damaging Wind Events with the WSR-88D
Downbursts
Predicting Dry Downbursts: Challenges
Predicting Dry Downbursts: Designing an algorithm approach
Roberts and Wilson (1989)
Eilts et al (1996)
Damaging Downburst Prediction and Detection Algorithm (DDPDA) for the WSR-88D
“Ground Truth” Data Set
High-quality “Ground Truth”
Current Downburst Data Set
DDPDA: Some General Info
DDPDA Output
Input to the DDPDA
DDPDA Input: Reflectivity Data
Potential Precursors: VIL (range > 80 km)
DDPDA Input: Radial Velocity Parameters
Convergence Calculation
In-cell radial velocity difference
Environmental Parameters
DDPDA: Combined Cell Data Array
Example Prediction Equation (Range > 80 km)
Future of the DDPDA
Email: smith@nssl.noaa.gov
Home Page: http://www.nssl.noaa.gov/~tsmith