NCAR Auto-Nowcast System
Open Access
- 1 August 2003
- journal article
- Published by American Meteorological Society in Weather and Forecasting
- Vol. 18 (4), 545-561
- https://doi.org/10.1175/1520-0434(2003)018<0545:nas>2.0.co;2
Abstract
The Auto-Nowcast System (ANC), a software system that produces time- and space-specific, routine (every 5 min) short-term (0–1 h) nowcasts of storm location, is presented. A primary component of ANC is its ability to identify and characterize boundary layer convergence lines. Boundary layer information is used along with storm and cloud characteristics to augment extrapolation with nowcasts of storm initiation, growth, and dissipation. A fuzzy logic routine is used to combine predictor fields that are based on observations (radar, satellite, sounding, mesonet, and profiler), a numerical boundary layer model and its adjoint, forecaster input, and feature detection algorithms. The ANC methodology is illustrated using nowcasts of storm initiation, growth, and dissipation. Statistical verification shows that ANC is able to routinely improve over extrapolation and persistence.Keywords
This publication has 24 references indexed in Scilit:
- Radar Reflectivity–Derived Thunderstorm Parameters Applied to Storm Longevity ForecastingWeather and Forecasting, 1999
- A Fuzzy Logic Method for Improved Moment Estimation from Doppler SpectraJournal of Atmospheric and Oceanic Technology, 1998
- The Storm Cell Identification and Tracking Algorithm: An Enhanced WSR-88D AlgorithmWeather and Forecasting, 1998
- Nimrod: a system for generating automated very short range forecastsMeteorlogical Applications, 1998
- Sensitivity of Moist Convection Forced by Boundary Layer Processes to Low-Level Thermodynamic FieldsMonthly Weather Review, 1996
- Cloud Classification of AVHRR Imagery in Maritime Regions Using a Probabilistic Neural NetworkJournal of Applied Meteorology and Climatology, 1994
- TITAN: Thunderstorm Identification, Tracking, Analysis, and Nowcasting—A Radar-based MethodologyJournal of Atmospheric and Oceanic Technology, 1993
- The Utility of Sounding and Mesonet Data to Nowcast Thunderstorm InitiationWeather and Forecasting, 1993
- First Radar Echoes from Cumulus CloudsBulletin of the American Meteorological Society, 1993
- Results of a Randomized Hail Suppression Experiment in Northeast Colorado. Part VI:Post HocStratification by Storm Intensity and TypeJournal of Applied Meteorology, 1979