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- Input increments from the 2D-OI for snow depth (arpifs/obs_preproc/obsgen.F90)
- Calculate and input additional EDA Jacobians related to snow (gen/fetchmars, arpifs/sekf/sekf_geteda_jacobians.F90)
- Covariances between soil moisture and snow depth are set to 0
- Covariances between snow water equivalent and 2m temperature, relative humidity, soil moisture are also set to 0
- Jacobians between snow water equivalent and snow depth are set to 1/rsn (based on the relationship in the model)
- Analyse snow water equivalent using the 2D-OI increments and Jacobians (arpifs/sekf/sm_ekf_main.F90)
- So far, increments for snow water equivalent are not reflected to the analyzed field (offline calculation only)
Result
Future work
- Input snow observations directly in the SEKF (the same task as soil moisture analysis using 2m temperature and relative humidity)
- Need to implement a localization in observation space
- Each QC also should be implemented in the SEKF
- Consider flow dependent background errorsÂ
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