Abstract: There has been an apparent inconsistency between the comparatively large growth rates given for long-wavelength baroclinic instability modes for jet flows on the sphere and the small values given by the Charney and Green ...

Abstract: The authors investigate the processes acting during a cyclonic ?blocking? anomaly that dominated the upper troposphere in the New Zealand-Tasman Sea region during the very stormy month of August 1990. The authors use ...

Abstract: Characteristic patterns of cyclogenesis in the southwest Pacific region are identified from a sample of 40 developing cyclones during 1990?94. Cases were chosen objectively to ensure a realistic sampling of typical rather ...

Abstract: Recently, the effects of nonlinearity on waves forced by sinusoidal orography in severely truncated barotropic and baroclinic models have been explored. Multiple equilibria were found for fixed forcing and these have been ...

Abstract: Atmospheric blocking events over the South Pacific are investigated using a 39-yr record of 500-hPa height fields from the NCEP?NCAR reanalysis dataset. The analysis extends earlier work using a 16-yr record and confirms ...

Abstract: The principal modes of Southern Hemisphere low-frequency variability have recently been calculated using a 39-yr record of 300-hPa streamfunction fields from the NCEP?NCAR reanalysis dataset. The authors attempt to interpret ...

Abstract: Patterns of outgoing longwave radiation (OLR) have been analyzed over the tropical Indian and Pacific Oceans in order to identify the varying influence of their associated convective anomalies on the circulation at higher ...

Abstract: he Deep Propagating Gravity Wave Experiment (DEEPWAVE) was designed to quantify gravity wave (GW) dynamics and effects from orographic and other sources to regions of dissipation at high altitudes. The core DEEPWAVE field ...