Data Analysis System, is a 3-dimensional weather analysis program.
This implementation is using
Rapid Update Cycle (RUC)
forecasts from the
National Center for
Environmental Prediction (NCEP)
as background fields.
, surface airways,
NOAA wind profiler
, and radiosonde data are used in the
analysis. The analysis method is a successive correction scheme
known as the Bratseth method [Tellus, 1986].
This method is designed to asymptotically
approach the result of a statistical (optimal) interpolation.
The analysis grid has resolution of 9 km in the horizontal and is stretched
in the vertical from about 10 m near the ground to nearly 1 km near the
The analysis is run hourly on an IBM RS/6000 Power workstation on
a timed queue and the WWW products are generally available by 30 minutes
after each hour.
However, due to the varying load on the machine, that performance
cannot be guaranteed.
For further technical description of ADAS click here.
ADAS is the initial step in a multiple-step analysis/assimilation procedure
using mutiple data sources, including Doppler radar winds, to initialize
a model for short-term forecasts of thunderstorms and other small-scale
Technical Description of ADAS
Description of ADAS Plotted Variables
The Advanced Regional Prediction System (ARPS)
ARPS real-time forecasts
Oklahoma Weather Roundup.
Center for Analysis and Prediction of Storms
Return to ADAS main page
Comments or problems? email Keith Brewster