gausscost/FLEXPART gausscost/FLEXPART

gausscost/FLEXPART gausscost/FLEXPART#

Description#

Gaussian cost function simulator adapted for FLEXPART Lagrangian footprints.

This plugin implements the same Bayesian Gaussian cost function as gausscost / std but is tailored for use with FLEXPART-based Lagrangian particle-dispersion models. Key differences from the standard version:

  • Observation errors are computed from the combined obs-error and background-error columns of the datastore (obserror**2 + obs_bkgerr**2) rather than from a general \(\mathbf{R}^{-1}\) matrix-vector product.

  • The adjoint sensitivity is read directly from obsvect.dx rather than being computed via a separate adjoint obs-operator call.

  • Optionally applies an SVD-based cost function via svd_cost().

See gausscost / std for the general mathematical framework.

Requirements#

The current plugin requires the present plugins to run properly:

Requirement name

Requirement type

Explicit definition

Any valid

Default name

Default version

controlvect

ControlVect

False

True

None

None

obsvect

ObsVect

False

True

None

None

obsoperator

ObsOperator

True

True

standard

std

See also

API reference (functions & code)