applications.rst

Applications in OOPS

OOPS provides the following applications that can be used with different models and observations:

Applications running forecast (and computing H(x))

• :doc:`Forecast<forecast>`: model forecast
• :doc:`HofX<hofx>`: model forecast and computes H(x)

Data assimilation applications

• :doc:`Variational<variational>`: variational data assimilation
• :doc:`LocalEnsembleDA<localensembleda>`: local ensemble data assimilation

Ensemble applications

These applications are similar to the above but allow users to run several members at once in order to compute a Forecast, HofX or Variational Data Assimilation for an entire ensemble. See the documentation on :doc:`Ensemble Applications<ensemble-applications>`.

• EnsembleForecast: ensemble of model forecasts
• EnsembleHofX: ensemble of model forecasts; computes H(x) for each ensemble member.
• EDA: ensemble of variational data assimilations

Data assimilation helper applications

• EstimateParams
• :doc:`GenEnsPertB<genenspertb>`: generates an ensemble of states distributed according to a specifed background error covariance, and runs an ensemble forecast from that ensemble.
• StaticBInit
• ExternalDFI
• EnsVariance

Applications operating on model states and increments

• EnsRecenter: recenters ensemble around a provided state
• AddIncrement: adds increment to the model state
• DiffStates: computes and saves difference between two model states