7 Experiments with idealized geometry are used to compare model solutions of implicit VPand explicit EVP-solvers in two very different ice-ocean codes: the regular-grid, finite-volume Massachusetts Institute of Technology general circulation model (MITgcm) and the Alfred Wegener Institute Finite Element Ocean Model (FEOM). It is demonstrated that for both codes the obtained solutions of implici...

Oblique nonlinear interaction of two incident solitary waves, or soliton resonance, is important because it can produce a third solitary wave that has an amplitude up to 4 times the incident wave amplitude. Although this process is well studied for surface waves and in other fields of physics such as plasma, it has not been well studied for internal solitary-like waves (ISWs) in the ocean. In t...

In one of the most complex Earth science inverse modeling initiatives, the Estimation of the Circulation and Climate of the Ocean (ECCO) project is developing greatly improved estimates of the three-dimensional, time-evolving state of the global oceans [1, 2]. To this end, the project is applying extimation/optimal control techniques to constrain a state-of-the-art parallel general circulation ...

Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. ABSTRACT Of the over 800 exoplanets detected to date, over half are on non-circular orbits, with eccentricities as ...

We examine numerically the conversion of barotropic tidal energy into internal waves by flow over an isolated seamount and over systems of periodically and randomly distributed 1100 m tall seamounts with Gaussian profiles. The simulations use the Massachusetts Institute of Technology general circulation model (MITgcm) to calculate for an infinitely deep ocean the dependence of the energy conver...

The multiple equilibria of the thermohaline circulation (THC: used here in the sense of the meridional overturning circulation) as function of the surface freshwater flux has been studied intensively following a Stommel paper from 1961. It is shown here that multistability and hysteresis of the THC also exist when the wind stress amplitude is varied as a control parameter. Both the Massachusett...

A variational data assimilation system has been implemented for the tropical Pacific Ocean using an eddypermitting regional implementation of the MITgcm. The adjoint assimilation system was developed by the Estimation of the Circulation and the Climate of the Ocean consortium, and has been extended to deal with open boundaries. This system is used to adjust the model to match observations in th...

Abstract. The Antarctic coastal ocean impacts sea level rise, deep-ocean circulation, marine ecosystems, and the global carbon cycle. To better describe understand these processes their variability, it is necessary to combine sparse available observations with best-possible numerical descriptions of circulation. In particular, high ice shelf melting rates in Amundsen Sea have attracted many obs...