Observation Functions are more advanced filtering routines that are encapsulated together in a unit. They usually combine several complicated logic operations, and decomposing these filters into separate parts would have an obfuscating effect.
- :ref:`ChannelUseflagCheckRad <ChannelUseflagCheckRad>`
- Channel usage flag check for radiances
- :ref:`CloudDetectMinResidualIR <CloudDetectMinResidualIR>`
- Cloud detection using Minimum Residual Method for IR Sensors
- :ref:`CLWMatchIndexMW <CLWMatchIndexMW>`
- Cloud liquid water match index for microwave radiances
- :ref:`CLWRetMW_SSMIS <CLWRetMW_SSMIS>`
- Cloud liquid water for SSMIS
- :ref:`InterChannelConsistencyCheck <InterChannelConsistencyCheck>`
- Inter-channel consistency check for radiances
- :ref:`NearSSTRetCheckIR <NearSSTRetCheckIR>`
- NCEP-GDAP near-sea-surface temperature IR retrieval
- :ref:`ObsErrorBoundIR <ObsErrorBoundIR>`
- Observation error bound for gross check
- :ref:`ObsErrorBoundMW <ObsErrorBoundMW>`
- Obseration error bounds for microwave radiances
- :ref:`ObsErrorFactorConventional <ObsErrorFactorConventional>`
- Compute observation error inflation factor for conventional observations based on vertical spacing
- :ref:`ObsErrorFactorLatRad <ObsErrorFactorLatRad>`
- Observation error bound reduction within tropics
- :ref:`ObsErrorFactorQuotient <ObsErrorFactorQuotient>`
- Reject observations based on comparing final observation error to initial error estimate
- :ref:`ObsErrorFactorSfcPressure <ObsErrorFactorSfcPressure>`
- Inflate observation error for surface pressure (as in GSI)
- :ref:`ObsErrorFactorSituDependMW <ObsErrorFactorSituDependMW>`
- Compute error inflation factors for AMSU-A and ATMS
- :ref:`ObsErrorFactorSurfJacobianRad <ObsErrorFactorSurfJacobianRad>`
- Inflate error using surface temperature and emissivity Jacobians
- :ref:`ObsErrorFactorTopoRad <ObsErrorFactorTopoRad>`
- GSI error inflation as a function of terrain height, channel, and transmittance
- :ref:`ObsErrorFactorTransmitTopRad <ObsErrorFactorTransmitTopRad>`
- Satellite radiance observation error inflation factor
- :ref:`ObsErrorFactorWavenumIR <ObsErrorFactorWavenumIR>`
- Observation error inflation for satellite infrared sensors
- :ref:`ObsErrorModelRamp <ObsErrorModelRamp>`
- Parameterize observation error as a piecewise linear function
- :ref:`ObsErrorModelStepwiseLinear <ObsErrorModelStepwiseLinear>`
- GSI variant of ObsErrorModelRamp
- :ref:`ObsFunctionVelocity <ObsFunctionVelocity>`
- Compute wind speed from u- and v- components
- :ref:`RONBAMErrInflate <RONBAMErrInflate>`
- Observation error inflation factor for GnssroBndNBAM
- :ref:`SatWindsLNVDCheck <SatWindsLNVDCheck>`
- log-normal vector difference (LNVD) between observed and model winds
- :ref:`SatWindsSPDBCheck <SatWindsSPDBCheck>`
- Wind gross error check
- :ref:`TropopauseEstimate <TropopauseEstimate>`
- First-guess extimate of tropopause pressure from climatology
- :ref:`WindDirAngleDiff <WindDirAngleDiff>`
- Compute wind direction angle different between observation and model
.. toctree:: :hidden: ChannelUseflagCheckRad CloudDetectMinResidualIR CLWMatchIndexMW CLWRetMW_SSMIS InterChannelConsistencyCheck NearSSTRetCheckIR ObsErrorBoundIR ObsErrorBoundMW ObsErrorFactorConventional ObsErrorFactorLatRad ObsErrorFactorQuotient ObsErrorFactorSfcPressure ObsErrorFactorSituDependMW ObsErrorFactorSurfJacobianRad ObsErrorFactorTopoRad ObsErrorFactorTransmitTopRad ObsErrorFactorWavenumIR ObsErrorModelRamp ObsErrorModelStepwiseLinear ObsFunctionVelocity ROobserrInflation SatWindsLNVDCheck SatWindsSPDBCheck TropopauseEstimate WindDirAngleDiff