Huang, Xiang-Yu,
National Center for Atmospheric Research
WRFDA - the Weather Research and
Forecasting (WRF) Data Assimilation system is a component of the WRF modeling
system developed at the National Center for Atmospheric Research. WRFDA is an advanced data assimilation
system, contained with the WRF software that provides state-of-art 3D/4D
variational (3D/4D-Var) and variational/ensemble hybrid techniques (Barker et
al. 2004; Huang et al. 2009; Wang et al. 2008). WRFDA is used in both applied
and research settings. It is used as the analysis component of several
international operational data assimilation and forecasting systems (e.g. AFWA,
CWB, KMA, BMB, UAE). It is also used by universities and research institutions
for data assimilation research.
WRFDA is a community data assimilation
asset. NCAR maintains and develops the WRFDA website [http://www2.mmm.ucar.edu/wrf/users/wrfda], where
community users can browse, or download WRFDA documentation, obtain the latest
code and test data, learn using WRFDA through online tutorial, and participate
in user forums.
At the workshop, I will give a brief overview of
the current WRFDA status and progress made in the past year, including the computing
performance of the latest 4DVAR and some preliminary results of rainfall
assimilation.