Abstract: A one-layer, tropospherically averaged tracer model and its adjoint are used to examine observed midlatitude regional anomalies in terms of horizontal advection, and the effects of adiabatic and diabatic heat sources. The ...

Abstract: An equivalent barotropic tracer model and its adjoint are used to examine observed central European anomalies of potential vorticity (PV) in terms of advection and diabatic effects. The PV viewpoint yields a similar picture ...

Abstract: The influence of ocean?atmosphere interaction on the wintertime Arctic oscillation (AO) is investigated using a hierarchy of experiments made with two general circulation models (GCMs), ranging from climatologically forced ...

Abstract: Linear baroclinic instability theory is used to investigate the subweekly time scale transient eddies (TEs) and their feedbacks associated with three-dimensional basic flows on the Northern Hemisphere, in terms of a two-layer ...

Abstract: The linear baroclinic instability of three-dimensional basic flows on the Northern Hemisphere is examined in terms of a simple two-level, quasi-geostrophic model. The basic flows considered comprise an observed six-winter ...

Abstract: he prediction skill of precipitation at submonthly time scales during the boreal summer season is investigated based on hindcasts from three global ensemble prediction systems (EPSs). The results, analyzed for lead times ...

Abstract: Weather regimes are used to determine changes in the statistical distribution of winter precipitation and temperature at eight locations within the western United States. Six regimes are identified from daily 700-mb heights ...

Abstract: his paper addresses the effect of interannual variability in jet stream orientation on weather systems over the North Atlantic basin (NAB). The observational analysis relies on 65 yr of NCEP?NCAR reanalysis (1948?2012). ...

Abstract: The seasonal potential predictability of monsoon onset during the August?December season over Indonesia is studied through analysis of the spatial coherence of daily station rainfall and gridded pentad precipitation data ...

Abstract: Oscillatory climatic modes over the North Atlantic, Ethiopian Plateau, and eastern Mediterranean were examined in instrumental and proxy records from these regions. Aside from the well-known North Atlantic Oscillation (NAO) ...