Prediction of Thunderstorm Initiation Through 4-Dimensional Data Assimilation of Doppler Radar Data
Abstract
Results from the first year of a three-year contract to prototype a local thunderstorm forecast model are presented. This model seeks to use single Doppler radar data to continuously update a mesoscale forecast model which will predict crucial thunderstorm forecast parameters. Previous research has shown that assimilating Doppler wind information alone will not produce accurate model forecasts; a compatible temperature analysis must also be generated and assimilated alongside. We present results from an Observing System Simulation Experiment confirming these results and outlining a new assimilation and forecast system. This system will generate a quality 3-dimensional wind analysis from the single Doppler radar data, and will generate a compatible temperature analysis consistent with the wind analysis. It will then use the wind and temperature analyses to continuously nudge a mesoscale model toward the evolving boundary layer wind and temperature field.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 02, 1992
- Accession Number
- ADA251243
Entities
People
- Thomas M. Hamill
Organizations
- Atmospheric and Environmental Research, Inc