This obsfunction follows a similar subroutine of GSI Observer to compute the log-normal vector difference (LNVD) between the observed and model winds. Calculation of LNVD uses the following Bounds Check
filter shown in the example.
test_hofx
is optional as a way to test against a reference value when running the test_ObsOperator.x application instead of the test_ObsFilters.x application.
- filter: Bounds Check
filter variables:
- name: eastward_wind
- name: northward_wind
test variables:
- name: SatWindsLNVDCheck@ObsFunction
options:
test_hofx: GsiHofX
maxvalue: 3