Stream insects use in different ways the stream habitats which affect patterns of species occurrence on stream. The nestedness is one these being an ecological mechanism that generates beta diversity. In this study, we verify effects temporal environmental variations Chironomidae assemblages subtropical streams. We collected chironomid larvae during winter and summer three years (2010, 2011 201...

Convective variability at submonthly timescales (7–20 days) over the Tibetan Plateau and the associated large-scale atmospheric circulation and convection were examined over regions affected by the Asian Monsoon. The mature phase of the Asian summer monsoon (July–August) was analyzed for those years (1986, 93, 98) in which convective variability on timescales of 14 days was notable over the Tib...

The western Pacific subtropical high (WPSH) has a significant effect on droughts, heat waves, and tropical cyclone tracks over East Asia and the northwest Pacific. The WPSH has intensified during the past three decades, but its causes are not yet well understood. Here we show that the Pacific Decadal Oscillation (PDO) is responsible for the long-term changes in the WPSH through the meridional s...

We present results from axisymmetric, time-dependent magnetohydrodynamical (MHD) simulations of a gaseous envelope collapsing onto a black hole (BH). We consider gas with so small angular momentum that, if not for the effects of MHD, the flow would accrete directly onto a BH. We find that after an initial transient, the flow settles into a configuration with four components: (i) a radial equato...

In this paper, I present results from theoretical and numerical (Monte Carlo) Nparticle fully relativistic 4-D analysis of Penrose scattering processes (Compton and γγ −→ ee) in the ergosphere of a supermassive or stellar mass Kerr (rotating) black hole. Specifically, the escape conditions and the escaping orbits of the Penrose pair production (γγ −→ ee) electrons are analyzed, revealing that t...

In this study, baroclinic-barotropic instability of the Martian atmosphere is studied for a zonal basic state based on Mariner 9 observations, using a spherical linear primitive equation model derived from a method of 3-D normal mode expansion. As a result of solving a matrix eigenvalue problem, a distinctly unstable mode at synoptic to planetary scales was found with a peak growth rate of 2.3 ...

In this paper, I present results from theoretical and numerical (Monte Carlo) N-particle fully relativistic 4-D analysis of Penrose scattering processes (Compton and γγ −→ ee) in the ergosphere of a supermassive or stellar mass Kerr (rotating) black hole. Specifically, the escape conditions and the escaping orbits of the Penrose pair production (γγ −→ ee) electrons are analyzed, revealing that ...