Abstract: In this paper error growth is examined using a family of inhomogeneous statistical closure models based on the quasi-diagonal direct interaction approximation (QDIA), and the results are compared with those based on ensembles ...

Abstract: AbstractThe Madden?Julian oscillation (MJO) is presented as a series of interacting Rossby and inertial gravity waves of varying vertical scales and meridional extents. These components are isolated by decomposing reanalysis ...

Abstract: he authors undertake a multiscale spectral reexamination of the variability of the Pacific?South American (PSA) pattern and the mechanisms by which this variability occurs. Time scales from synoptic to interannual are ...

Abstract: A stochastically forced linear inverse model (LIM) of the combined modes of variability from the tropical and South Pacific oceans is used to investigate the linear growth of optimal initial perturbations and to identify ...

Abstract: his study applies a finite-element, bounded-variation, vector autoregressive method to assess midtropospheric flow regimes characterized by regime switches between metastable states. The flow is assessed in reanalysis data ...

Abstract: hanges in the metastability of the Southern Hemisphere 500-hPa circulation are examined using both cluster analysis techniques and split-flow blocking indices. The cluster methodology is a purely data-driven approach for ...

Abstract: Low-frequency variability in the south Indian Ocean is studied by analyzing 200 years of output from a fully coupled climate model simulation. At time scales of 2–10 years, the variability is dominated by westward-propagating ...