Case 2: ARW Case With Conventional Data (PrepBUFR) Plus Other Data
Setting Up the GSI Observer Run
Running GSI as observer is the same as running GSI as 3DVar analysis, except for couple of run scripts setups. Users should create a a basic GSI run script following the GSI tutorial: Prepare Base Run Script.
Based on run_gsi_regional.ksh_basic, make the following changes to run GSI as observer:
- Define run GSI observer only and ensemble members
- When set if_observer=Yes, GSI only runs observation operator part and skips the minimaztion:
if_observer=Yes no_member=20 BK_FILE_mem=${BK_ROOT}/wrfarw.mem- For this exercise, in addition to conventional observations, satellite radiance data are also assimilated. To do so, un-comment the links to the other observations
ln -s ${srcobsfile[$ii]} ${gsiobsfile[$ii]}The example script can be found : here
