The Columbia River discharge plays a central role in North-East Pacific Ocean coastal ecosystem dynamics. A model is developed to predict non-stationary surface-salinity time-series in the North Pacific Ocean off-shore the Columbia River. The model takes wind velocities and Columbia River discharge as inputs only. Wind velocities are converted to smoothed wind stresses which are then integrated...

A two-box model for equator-to-pole planetary heat transport is extended to include simple atmospheric dynamics. The surface drag coefficient CD is treated as a free parameter and solutions are calculated analytically in terms of the dimensionless planetary parameters eta (atmospheric thickness), omega (rotation rate) and xi (advective capability). Solutions corresponding to maximum entropy pro...

Previous studies of hyporheic zone focused largely on the net mass transfer of solutes between stream and streambed. Solute transport processes within the bed has attracted less investigation. In this study, we combined flume experiments and numerical simulations to examine solute transport processes in a streambed with periodic bedforms. Solute originating from the stream was subjected to adve...

We study a formulation of the incompressible Euler equations in terms of the inverse Lagrangian map. In this formulation the equations become a first order advective nonlinear system of partial differential equations.

3 PMLs for the Euler System 5 3.1 PML for the advective wave equation . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.2 First PML model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.3 PMLness of the first model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.4 Second PML model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Jets and outflows must be produced directly from accretion disks and inflows, especially when the central gravitating objects are compact, such as neutron stars and black holes, and themselves are not mass losing. Here, we review the formation of jets from advective inflows. We show that the centrifugal pressure supported boundary layer (CENBOL) of the black holes may play crucial role in produ...

Conventional Galerkin-based finite element algorithms perform poorly when modeling advective transport. Here we develop and test a characteristic Galerkin scheme to solve the unsteady three-dimensional advective transport equation. The algorithm uses tracking of the Gaussian quadrature points to project the information from the Eulerian background grid to the Lagrangian grid. Numerical experime...