Tangent linear model

From Glossary of Meteorology
Revision as of 19:09, 26 January 2012 by imported>Perlwikibot (Created page with " {{TermHeader}} {{TermSearch}} <div class="termentry"> <div class="term"> == tangent linear model == </div> <div class="definition"><div class="short_definition">(Abbre...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)



tangent linear model

(Abbreviated TLM.) A model, comprising tangent linear equations, that maps a perturbation vector, δx(t1) = Lδx(t0), from initial time t0 to forecast time t1.

Here, L is the tangent linear operator and x is the model state vector. A TLM provides a first-order approximation to the evolution of perturbations in a nonlinear forecast trajectory.
See tangent linear approximation, small perturbation, adjoint model.