CAPS produces realtime high-resolution weather
analyses and forecasts throughout the year and enhanced forecasts
during the spring storm season.
Ensemble Forecasts for Hazardous Weather Testbed (HWT) & HMT
Between May 1 and June 2, 2017,
CAPS is producing 23-member,
Ensemble Forecasts (SSEF) for the full continental U.S. (CONUS)
domain, assimilating radial
velocity and reflectivity data from over 140 WSR-88D radars
and other available observations using the single-time (non-cycled)
ARPS 3DVAR with complex cloud analysis system.
The daily 60-hour-long forecasts
(some members run 36-h) are initialized at 00 UTC (7pm CDT). These forecasts are produced on
a Cray XC40 supercomputer system, at the University of Texas at Austin.
This system is referred to as
'3DVAR-based ensemble'. A new convection-allowing FV3 member using GFDL's FV3
global forecasting model core with nested 3-km CONUS grid and Thompson microphysics is produced on Schooner at OSCER at the University of Oklahoma.
Between June 19 and July 21, a 15-member SSEF is produced to support
the 2017 HMT FFaIR experiment.
Separately, cycled GSI + ensemble Kalman filter (EnKF) data assimilation is performed on the same 3-km CONUS grid. The 40 member ensemble is initialized at 1800 UTC each day, and assimilate
the RAP/HRRR GSI data stream hourly (1900-0000 UTC) with all WSR-88D
radar data over a one-hour period (2300-0000 UTC) at 15 minute intervals.
A total of 10 forecasts of 60 hour long are produced from the final
0000 UTC analyses using WRF-ARW. These forecasts are produced using
another NSF XSEDE supercomputer,
operated by PSC
at the University of Tennessee. This system is referred to as
Additional details can be found
in the 2017 CAPS HWT
Spring Experiment Plan Document.
Analyses and Forecasts for CASA Dallas-Fort Worth Testbed
CAPS is producing realtime
400-m-resolution low-level wind analyses that are updated every 5 min for
CASA Spring Experiment.
Available CASA and other sources of data are going into
the analyses. Furthermore, up to 2-hour-long Very-Short-Range NWP forecasts
at a 1-km resolution are produced every 20 minutes when active weather exists
within the CASA Oklahoma network. CASA analysis and forecasts are produced
on OSCER's Boomer system at the
University of Oklahoma, using nearly 2000 processor cores.
High-Resolution Hurricane Forecasts
Center for Analysis and Prediction of Storms
National Weather Center, Suite 2500
120 David L. Boren Blvd., Norman, OK 73072, USA
Phone: (405) 325-0453 Fax: (405) 325-7614 E-mail: firstname.lastname@example.org
Last Updated on