The off-equatorial minimum-B-pocket (OEMBP) at high latitudes in the dayside outer magnetosphere is expected as another source region of electrostatic electron cyclotron harmonic (ECH) waves, addition to magnetic equator. However, its crucial role excitation ECH waves has never been directly investigated due spatiotemporal-varying and difficulty be located. Based on observations from Magnetosph...

Stuart vortices are among the few known smooth explicit solutions of planar Euler equations with a nonlinear vorticity, and they can be adapted to model inviscid flow on surface fixed sphere. By means perturbative approach we show that method used investigate Stuart sphere provides insight into dynamics large-scale zonal flows rotating background polar vortices. Our...

[1] The secondary meridional circulation induced by convective momentum transport (CMT) within the ascending branch of the Hadley circulation is a missing dynamical mechanism that can cause common failure of general circulation models (GCMs) in simulating seasonal migration of the intertropical convergence zone (ITCZ) precipitation maximum across the equator. This failure is manifested by the m...

Fluxgate magnetometer data recorded at the dip-equator (Huancayo, Peru; 1.44°N, 355.9° in geomagnetic coordinates; 12.1°S, 75.2°W in geographic coordinates; L = 1.00) with higher accuracy of timing (0.1 s) and amplitude resolution (0.01 nT) were utilized to survey an onset of Pi 2 pulsations in the midnight sector (2100±0100 LT) during PROMIS (Polar Region and Outer Magnetosphere International ...

Upper ocean turbulence increases dramatically within about a degree of the equator. This turbulence has important practical implications for climate because the equator is the primary site for heat uptake by the oceans. This heat may be transferred quickly to the atmosphere or retained in the ocean for many years depending on the turbulence. Our objective here is to better understand the proces...

[1] The configuration of the magnetic field near 100 RJ in the dusk sector of the Jovian magnetosphere varies with distance from the equatorial current sheet. The changing twist out of meridian planes is consistent with flows that lag corotation near the equator but that may lead corotation at higher latitudes. Although a portion of the field perturbation may be produced by magnetopause current...