Changes between Version 5 and Version 6 of FAQ_PDAF

Timestamp:

Aug 6, 2025, 9:57:33 AM (5 days ago)

Author:

lnerger

Comment:

--

FAQ_PDAF

@@ -15 +15 @@
 
 'PE' is the common expression for 'processing element'. This relates to parallelization and usually refers to a single process or 'task' in MPI parallelization. Thus, when you read 'PE-local' in the source code, this means that some variable is local (specific) or a single process or MPI task (thus while the variable usually exist for all processes, its value can be different for each process).
+
+== Execution ==
+
+=== What should I do when I see the message "PDAFomi-ERROR: coords_p not initialized - cannot apply localization"? ===
+
+This message appears in PDAF 3 when the EAKF or LEnKF are used and the localization parameters are not initialized with a call to `PDAFomi_set_localize_covar`. In this case, the filter will run correctly, but no covariance localization will be applied. To enable the covariance localization on needs to insert a call to `PDAFomi_set_localize_covar` into each PDAF-OMI observation module, see the [wiki:OMI_observation_modules_PDAF3#Initializingcovariancelocalization Page on PDAF-OMI observation modules].
+
+=== What should I do when I see the message "PDAFomi-WARNING: state coordinates not initialized - cannot apply localization"? ===
+
+This message appears in PDAF 3 when the EAKF or LEnKF are used and the localization parameters are not initialized with a call to `PDAFomi_set_localize_covar`. In this case, the filter will run correctly, but no covariance localization will be applied. To enable the covariance localization on needs to insert a call to `PDAFomi_set_localize_covar` into each PDAF-OMI observation module, see the [wiki:OMI_observation_modules_PDAF3#Initializingcovariancelocalization Page on PDAF-OMI observation modules].