This study presents a simple microfluidic approach to the rapid fabrication of complex-shaped microfibers (e.g., single hollow, double hollow, and microbelt), with highly uniform structures, based on a combination of the spontaneous formation of polymeric jet streams and in situ photopolymerization. Two laminar flows of a photocurable fluid and a liquid template (nonpolymerizing fluid) spontane...

In this paper we carry out numerical modeling of coronal jets to understand their effects on the global corona and their contribution to the solar wind. We simulated jet models implemented within a well established three dimensional, two-temperature magneto-hydrodynamic (MHD) solar corona model that is built upon kinetic Alvén wave dissipation, producing realistic solar wind background. The jet...

In recent decades, southeast Australia has experienced both extreme drought and record-breaking rainfall, with devastating societal impacts. Variations in the Australian polar-front jet (PFJ) subtropical (STJ) determine, for example, location frequency of cool season (April–September) weather systems influencing rainfall events and, consequently, water availability southern half Australia. Chan...

There are significant differences in the way that researchers have defined “Etesian wind days”. An attempt is made here to establish common definitions of various types Etesian winds from weather forecaster’s viewpoint. These based on objective criteria adopted frequency atmospheric circulation features associated with occurrence and their physical characteristics. The presence fairly constant ...

A dry general circulation model is used to investigate how coupling between the stratospheric polar vortex and the extratropical tropospheric circulation depends on the latitude of the tropospheric jet. The tropospheric response to an identical stratospheric vortex configuration is shown to be strongest for a jet centered near 408 and weaker for jets near either 308 or 508 by more than a factor...

SUMMARY The linear spatial stability of a mixing layer between two parallel streams is considered, and a comparison is made between the stability of flows with and without a stationary splitter plate separating them upstream. The assumed velocity profile satisfies the condition of no slip on the splitter plate, but in other respects the flow is treated as inviscid. Account is taken of the jet s...

Stratospheric intrusions induced by a Rossby Wave breaking and its interaction with the subtropical jet during PICO3 campaign A. Carré, F. Ravetta, J.-P. Cammas, P. Mascart, J. Duron, G. Ancellet, and D. Lambert Laboratoire d’Aérologie, Observatoire Midi-Pyrénées, Toulouse, France Service d’Aéronomie, Institut Pierre Simon Laplace, Paris, France Received: 23 June 2005 – Accepted: 25 July 2005 –...

Direct Lyapunov exponents and stability results are used to extract and distinguish Lagrangian coherent structures (LCS) from a three-dimensional atmospheric dataset generated from the Weather Research and Forecasting (WRF) model. The numerical model is centered at 19.788N, 155.558W, initialized from the Global Forecast System for the case of a subtropical jet stream near Hawaii on 12 December ...