This study quantifies cloud–radiative anomalies associated with interannual variability in the latitude of the SouthernHemisphere (SH)midlatitude eddy-driven jet, in 20 global climatemodels fromphase 5 of theCoupled Model Intercomparison Project (CMIP5). Two distinct model types are found. In the first class ofmodels (type I models), total cloud fraction is reduced at SHmidlatitudes as the jet ...

The optimal shape of a two dimensional turbulator above an isothermal flat plate is found by using numerical simulation. The turbulent boundary layer over the flat plate was disrupted at various situations by inserting a quadrilateral bar where the boundary layer thickness kept more than three times greater than the insert\'s height. As a result, the overall heat transfer coefficient of the wal...

In this study, supersonic gaseous detonation initiation and propagation by single- symmetric-jets are compared, the effects of different intensities on further investigated to obtain a more comprehensive understanding mechanism hot jet in mixtures. The two-dimensional reactive Navier–Stokes equations, together with one-step Arrhenius chemistry model, adopted analyze flow field structure. result...

The extratropical annular-mode-like atmospheric responses to ENSO and global warming and the internal variability of annular modes are associated with similar, yet distinct, dynamical characteristics. In particular, La Niña, global warming, and the positive phase of annular modes are all associated with a poleward shift of midlatitude jet streams and surface westerlies. To improve understanding...

The stratification of the equatorial thermocline is a key variable for tropical climate dynamics, through its influence on the temperature of the water that upwells in the eastern equatorial ocean. In this study, two types of ocean models are used, an ocean general circulation model (GCM) and a 11⁄2-layer model, to investigate processes by which changes in the midlatitude winds affect the equat...

Several recent studies have shown the width of the tropical belt has increased over the last several decades. The mechanisms driving tropical expansion are not well known and the recent expansion is underpredicted by state-of-the art GCMs. We use the CAM3 GCM to investigate how tropical width responds to idealized atmospheric heat sources, focusing on zonal displacement of the tropospheric jets...

Low-order equal-time statistics of a barotropic flow on a rotating sphere are investigated. The flow is driven by linear relaxation toward an unstable zonal jet. For relatively short relaxation times, the flow is dominated by critical-layer waves. For sufficiently long relaxation times, the flow is turbulent. Statistics obtained from a second-order cumulant expansion are compared to those accum...

The processes regulating the climatology and annual cycle of the tropical tropopause layer (TTL) and cold point are not fully understood. Three main drivers have been identified: planetary scale equatorial waves excited by tropical convection, planetary scale extratropical waves associated with the deep Brewer-Dobson Circulation, and synoptic scale waves associated with the midlatitude storm tr...