205 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- KU LeuvenBE14 papers
- Centre National de la Recherche ScientifiqueFR11 papers
- Royal Observatory of BelgiumBE5 papers
- Jet Propulsion LaboratoryUS4 papers
- Royal Belgian Institute for Space AeronomyBE4 papers
- Sorbonne UniversitéFR4 papers
- UCLouvainBE4 papers
- Université Paris Sciences et LettresFR4 papers
- University of ReadingGB4 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR3 papers
- École Normale Supérieure - PSLFR3 papers
- Ghent UniversityBE3 papers
5 papers · 1 filter
Predictability of large-scale atmospheric motions: Lyapunov exponents and error dynamics
Stéphane Vannitsem
The deterministic equations describing the dynamics of the atmosphere (and of the climate system) are known to display the property of sensitivity to initial conditions. In the erg…
Low-frequency variability and heat transport in a low-order nonlinear coupled ocean-atmosphere model
Stéphane Vannitsem, Jonathan Demaeyer, Lesley De Cruz +1
We formulate and study a low-order nonlinear coupled ocean-atmosphere model with an emphasis on the impact of radiative and heat fluxes and of the frictional coupling between the t…
Controlling instabilities along a 3DVar analysis cycle by assimilating in the unstable subspace: a comparison with the EnKF
A. Carrassi, A. Trevisan, L. Descamps +2
A hybrid scheme obtained by combining 3DVar with the Assimilation in the Unstable Subspace (3DVar-AUS) is tested in a QG model, under perfect model conditions, with a fixed observa…
Model error and sequential data assimilation. A deterministic formulation
A. Carrassi, S. Vannitsem, C. Nicolis
Data assimilation schemes are confronted with the presence of model errors arising from the imperfect description of atmospheric dynamics. These errors are usually modeled on the b…
Data assimilation as a nonlinear dynamical systems problem: Stability and convergence of the prediction-assimilation system
Alberto Carrassi, Michael Ghil, Anna Trevisan +1
We study prediction-assimilation systems, which have become routine in meteorology and oceanography and are rapidly spreading to other areas of the geosciences and of continuum phy…