Baroclinic Instability and Loss of Balance

By M. Molemaker, James C. McWilliams, I. Yavneh. 2005

215 citations recorded by the source corpus.

Subfields: Molecular Biology, Oceanography

View Paper: https://www.semanticscholar.org/paper/148222613f78e32c20b4029ba8d786acec60b89c

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Citations in the corpus

An analysis of mechanisms for submesoscale vertical motion at ocean fronts (2006, methodology): “S, which gives rise to a new class of unbalanced ageostrophic instabilities (Molemaker et al., 2005, McWilliams, 2003) that may explain the genesis of submesoscale motion.”
Inertia–Gravity Waves Spontaneously Generated by Jets and Fronts. Part I: Different Baroclinic Life Cycles (2007, background): “Only for some specific flows (constant horizontal or vertical shear) have mechanisms of coupling between gravity waves and balanced motions at small Rossby number been theoretically described (Vanneste and Yavneh 2004; Plougonven et al. 2005; Molemaker et al. 2005 ), and this coupling was found to ”
Submesoscale Processes and Dynamics (2013, methodology): “These include (1) frontogenesis, (2) unforced instabilities, such as the ageostrophic baroclinic instability [Molemaker et al., 2005; Boccaletti et al., 2007], and (3) forced motion, such as flows affected by buoyancy fluxes or friction at boundaries.”
Submesoscale currents in the ocean (2016, background): “AAI is a less widely familiar instability type but by now has a variety of adduced flow examples (see [68] and its references), including the ageostrophic instability mode in Eady’s flow [69,70].”
Parameterization of Mixed Layer Eddies. Part I. Theory and Diagnosis (2008, background): “The shallow ML instabilities are ageostrophic baroclinic instabilities (Stone 1966, 1970, 1972a; Molemaker et al. 2005) and differ from the deep mesoscale instabilities in their fast growth rates O(1 day 1) and small scales O(1 km).”
Internal gravity waves from atmospheric jets and fronts (2014, background): “[71] The unstable character of such modes may not be so important because unbalanced modes generally have small growth rates relative to balanced instabilities present in the same flows [Stone, 1970; Molemaker et al., 2005].”
A Framework for Parameterizing Eddy Potential Vorticity Fluxes (2012, background): “…energy and D E is an operator representing eddy energy dissipation due to bottom drag (e.g., Sen et al. 2008), loss of energy to internal waves (e.g., Molemaker et al. 2005; Polzin 2008; Marshall and Naveira Garabato 2008; Nikurashin and Ferrari 2010), western boundary dissipation (e.g., Dewar…”
Submesoscale Instability and Generation of Mesoscale Anticyclones near a Separation of the California Undercurrent (2015, background): “Two candidates to explain these potential vorticity values are the ageostrophic anticyclonic instability (Yavneh et al. 2001; McWilliams et al. 2004; Molemaker et al. 2005), which can occur for smaller jRoj values than the centrifugally critical value ofRo521, and vertical shear, which can reduce…”
Ocean Circulation Kinetic Energy: Reservoirs, Sources, and Sinks (2009, background): “A few candidates exist: (1) bottom drag; (2) loss of balance (e.g., Molemaker et al., 2005; Williams, et al., 2008; see Marshall and Naveira Garabato, 2007, for a list of earlier references); (3) interactions with the internal wave field; (4) continental margin scattering/absorption; (5)…”
Mesoscale to Submesoscale Transition in the California Current System. Part II: Frontal Processes (2008, background): “…flow can exhibit locally significant unbalanced behavior, either by essentially balanced processes (e.g., baroclinic instability) that develop O(1) Rossby number and gw or by processes that simply have no balanced equivalent (e.g., ageostrophic instability; Barth 1994; Molemaker et al. 2005).”
TOWARD REGIONAL CHARACTERIZATIONS OF THE OCEANIC INTERNAL WAVEFIELD (2010, background): “A large body of work focusses upon the simplified cases of waves interacting with parallel shear flows [Molemaker et al., 2005; Ruddick, 1980] or vortices [Kunze, 1985], i.”
Balanced and unbalanced routes to dissipation in an equilibrated Eady flow (2010, background): “This “large-scale” flow has linear baroclinic instability modes, both forcebalanced (Eady 1949) and anticyclonic ageostrophic (Stone 1966; Molemaker et al. 2005).”
Balance and Spontaneous Wave Generation in Geophysical Flows (2013, background): “Balance and spontaneous wave generation 31 of Eady’s model, the growth rates of unbalanced instabilities can be shown to be exponentially small in (Molemaker et al. 2005), while for Phillips’s model unbalanced instabilities only exist when sufficiently large (Gula et al.”
Significant sink of ocean-eddy energy near western boundaries (2010, background): “Interactions between geostrophic eddies and internal waves through loss of balanc”