During the passage of tropical cyclone (TC) ARB O1, a westward transport Chlorophyll-a (Chl-a) enhancement was identified south Indian Peninsula. The features and underlying dynamics were investigated with high-resolution satellite remote sensing, reanalysis, Argo buoy data. From January 12 to 19, 2006, phytoplankton bloom propagated two ocean anticyclonic eddies, which enhanced after TC. surfa...

Moderate rotation and moderate horizontal confinement similarly enhance the heat transport in Rayleigh–Bénard convection (RBC). Here, we systematically investigate how these two types of flow stabilization together affect transport. We conduct direct numerical simulations confined-rotating RBC a cylindrical set-up at Prandtl number $\textit {Pr}=4.38$ , various Rayleigh numbers $2\times 10^{8}\...

Abstract This study uses linear regression and composite analyses to identify a pronounced asymmetric connection of sea surface temperature (SST) in the Tasman Sea with two opposite phases El Niño-Southern Oscillation (ENSO) during austral summer. In Niño years, SST anomalies (SSTAs) exhibit dipolar pattern weak warmth northwest modest cooling southeast, while La Niña years SSTAs basin-scale gr...

The north Indian Ocean is distinguished by the presence of seasonally reversing currents that flow between the Bay of Bengal and the Arabian Sea. These currents are located between the equator and approximately 10 N. The Summer Monsoon Current (SMC) flows eastward during the summer monsoon (May–September) and the Winter Monsoon Current (WMC) flows westward during the winter monsoon (November–Fe...

Consider the initial value problem for the three dimensional Navier-Stokes equations with rotation in the half-space R+ subject to Dirichlet boundary conditions as well as the Ekman spiral which is a stationary solution to the above equations. It is proved that the Ekman spiral is nonlinearly stable with respect to L2-perturbations provided the corresponding Reynolds number is small enough. Mor...

We investigate the damping of neutron star r-modes due to the presence of a viscous boundary (Ekman) layer at the interface between the crust and the core. Our study is motivated by the possibility that the gravitational-wave driven instability of the inertial r-modes may become active in rapidly spinning neutron stars, eg. in low-mass X-ray binaries, and the fact that a viscous Ekman layer at ...

Pictures of facial expressions from the Ekman and Friesen set (Ekman, P., Friesen, W. V., (1976). Pictures of facial affect. Palo Alto, California: Consulting Psychologists Press) were submitted to a principal component analysis (PCA) of their pixel intensities. The output of the PCA was submitted to a series of linear discriminant analyses which revealed three principal findings: (1) a PCA-bas...

In studying the axi-symmetric flow induced by source-sink distributions in a rotating cylindrical basin in the absence of radial barriers, a highly organized pattern of instability has been observed in the laminar Ekman layer along the bottom of the basin. The instability manifests itself in the form of almost perfectly concentric cylindrical sheets or curtains of water which rise as sharply de...