Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 15 of 15 for “"Eddy flux"”.
-
Mean meridional eddy flux of enthalpy in the Southern Hemisphere during the IGY,
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1968.
-
Eddy forcing of the mean circulation in the western North Atlantic
… of determining the effect of the low-frequency eddy variability on the mean circulation of the Western North Atlantic. A framework for this study is first established by scale analysis of the eddy and mean terms in the mean momentum, vorticity, and heat balances in three regions of the Western …
-
Quantifying terrestrial ecosystem carbon dynamics with mechanistically-based biogeochemistry models and in situ and remotely sensed data
… data.</p> <p>The upscaling studies based on FLUXNET network has provided us the spatial and temporal pattern of the carbon fluxes but it fails to consider the atmospheric CO2 effect given its important physiological role in carbon assimilation. In the second chapter, we consider the effect of …
-
Equilibration of an atmosphere by geostrophic turbulence
… studies is to quantify the role of turbulent eddy fluxes in maintaining the observed atmospheric mean state. It has been argued that eddy fluxes keep the mid-latitude atmosphere in a state that is marginally critical to the deepest mode of baroclinic instability, which provides a powerful …
-
Eddies and friction : removal of vorticity from the wind-driven gyre
… wider than the frictional region because eddies flux vorticity from within the interior streamlines to the frictional region for removal. Using boundary-enhanced viscosity, western-intensified calculations are possible with lower interior viscosity than in previous studies. Interesting behaviors …
-
The Effects of Diabatic Heating on Storm Track Dynamics
… analyses of the statistically equilibrated eddy ensemble includes time-mean statistics, global spectral energetics, local energetics and wavepacket maps. Preliminary investigations of linear and nonlinear zonal baroclinic instability and nonlinear baroclinic wavepacket evolution are …
-
Dynamics of the Antarctic circumpolar current : evidence for topographic effects from altimeter data and numerical model output
… constrictions are associated with increased eddy variability, a smaller percentage of which may be explained by the meandering of the ACC fronts, indicating that propagating eddies and rings may be spawned at topographic features. Detailed examination of spatial and temporal variability in …
-
Representation of eddies in climate models by a potential vorticity flux
… the heat and momentum transporting properties of eddy motions for use in three-dimensional, primitive equation, z-coordinate atmosphere and ocean models. Determining the transport characteristics of these eddies is fundamental to understanding their effect on the large-scale ocean circulation and …
-
Representation of eddies in climate models by a potential vorticity flux
… the heat and momentum transporting properties of eddy motions for use in three-dimensional, primitive equation, z-coordinate atmosphere and ocean models. Determining the transport characteristics of these eddies is fundamental to understanding their effect on the large-scale ocean circulation and …
-
Mesoscale variability and mean flow interaction near the Gulf Stream as seen by satellite altimetry and numerical modelling
The interaction between the eddy field and the mean flow near the Gulf Stream is studied here using satellite altimeter measurements and an eddy resolving numerical modeL. The eddy vorticity flux in the quasigeostrophic framework is obtained from the stream function standard deviation and spatial …
-
Assessment of mesoscale eddy parameterizations for coarse resolution ocean models
… role of eddies in a 105-years long basin scale eddy resolving simulation with the MIT General Circulation Model (GCM) forced by idealized wind stress and relaxation to prescribed meridional temperature; this thesis also evaluates the Fickian diffusive, the diabatic Green-Stone (GS) and the …
-
Instabilities and radiation of thin, baroclinic jets
… location. Near intense currents, the eddy field is highly energetic and has broad meridional extent. It is likely that the energy arises from instabilities of the intense current. However, the meridional extent of the linearly most unstable modes of such intense jets is much narrower …
-
Modelling wind-driven inter-ocean exchange in the greater Agulhas with the regional ocean modelling system
… from in situ hydrography, though source region fluxes exceed those observed. Both configurations exhibit inertially governed retroflections and produce Agulhas rings with eddy kinetic energy patterns consistent with those derived from altimetry. Improved topography in ARC112 yields a …
-
Remote sensing-based assessment of Gross Primary Production (GPP) in agricultural ecosystems
… croplands, this study combines information from flux determinations with eddy covariance (EC) methodology, process-based modeling of carbon gain, and satellite remotely-sensed vegetation indices (VIs). The data is brought together synthetically for major crops found in agricultural landscapes of …
-
Observations of wave-mean flow interaction in the Pacific Equatorial Undercurrent
… in this band produces large northward fluxes of eastward momentum and southward fluxes of temperature which affect the dynamics of the mean Undercurrent through the Reynolds stress divergence, and the Eliassen-Palm flux divergence. The waves produce a northward flux of eastward …