GETTING STARTED: After you have logged on and opened a terminal window, change directory to the main working directory for WRFDA tutorial practice: cd /kumquat/users/${USER}/DA If the directory does not exist yet, you should create it. mkdir /kumquat/users/${USER}/DA

 

Refer to WRFDA User's Guide if you need more detailed descriptions on various components of the WRF Data Assimilation System.

Tutorial presentations can be accessed through the links on each session's page.

For basic practical sessions, step-by-step instructions are provided to give you a clear idea of what input files are required, what namelist variables need to be set, and what executable is used. Once you have this basic knowledge, you should be able to build your own scripting system for your applications and environment. For advanced lessons, only a general description is provided. You are encouraged to refer to the tutorial presentations, user's guide and READMEs to figure out how to accomplish the tasks.

Basics

• Observation Preprocessing

• Running WRFDA-3DVAR – real data

• Running WRFDA-3DVAR – pseudo single observation test (PSOT)

• GEN_BE

 

Optional (choose the data types and applications that interest you)

• 4DVAR

• Cycling with WRFDA and WRF (advanced)

• Forecast Sensitivity to Observations (advanced)

• Hybrid data assimilation

• Radar data assimilation

• Radiance data assimilation

• Rainfall data assimilation

 

Compiling the code

• 3DVAR

• WRFPLUS

• 4DVAR

 

Advanced

• There are advanced practice cases listed near the end of the following practice sessions:
  • OBSPROC
  • WRFDA-3DVAR -- real data
  • Radiance Data Assimilation
  • WRFDA-4DVAR

• If you have attended the WRF tutorial, try running WRFDA on the WRF cases you have used.

The observations in PREPBUFR/BUFR format can be downloaded from
http://rda.ucar.edu/datasets/ds337.0 for conventional data
http://rda.ucar.edu/datasets/ds735.0 for radiance data

/kumquat/wrfhelp/WRFDA/external/cwordsh unblk ${your_downloaded_file} tmp.unblk
/kumquat/wrfhelp/WRFDA/external/cwordsh block tmp.unblk ${the_correctly_blocked_file_to_be_used_by_WRFDA_on_Linux}