There are two major organized cloud configurations in the vicinity of the equator. Where there is a small cross-equatorial surface pressure gradient, convection is close to the equator and is generally tied to the location of the lowest sea-level pressure (SLP) and warmest sea-surface temperature (SST), in agreement with arguments based upon simple thermodynamical considerations. However, when ...

the alluvial fan of shahdaad in derakhtangaan river is one of the biggest alluvial fans in a dry area in northeastern kerman. this alluvial fan has been formed due to different material erosions in the drainage basin of derakhtangaan river and lying of these materials in the extreme part of this basin called dasht-e-lut (the plain of lut). the region which has been studied in this research is o...

Compressible gas flow inside a convergent-divergent nozzle and its exhaust plume atdifferent nozzle pressure ratios (NPR) have been numerically studied with severalturbulence models. The numerical results reveal that, the SST k–ω model give the bestresults compared with other models in time and accuracy. The effect of changes in value ofdivergence half-angle (ε ) on the nozzle performance, thru...

The prediction of trajectories buoyancy-driven objects immersed in a viscous fluid is key problem dynamics. Simple-shaped objects, such as disks, present great variety trajectories, ranging from zig-zag to tumbling and chaotic motions. Yet, similar studies are lacking when the object permeable. We perform linear stability analysis steady vertical path thin permeable disk, whose flow through mic...

We describe a method for automatically clustering words according to their distribution in particular syntactic contexts. Words are represented by the relative frequency distributions of contexts in which they appear, and relative entropy is used to measure the dissimilarity of those distributions. Clusters are represented by "typical" context distributions averaged from the given words accordi...

Positive feedback between high-frequency eddies and low-frequency processes is believed to play an essential role in the NAO evolution. In this study, however, it found that previously well-studied upscale forcing intraseasonal scale window mostly limited during phase NAO−, but almost disappears NAO+. The maintenance of NAO+ by a strong barotropic instability basic flow, which has been overlook...

We analyze the orbital magnetic susceptibility from band structure of twisted bilayer graphene. Close to charge neutrality, out-of-plane inherits strong diamagnetic response Increasing doping, a crossover diamagnetism paramagnetism is obtained and logarithmic divergence develops at van Hove singularity Moir\'e lattice in first band. The enhanced stronger for relatively large angle but gets supp...