Observations of wave-mean flow interaction in the Pacific Equatorial Undercurrent

  • 216 Pages
  • 4.70 MB
  • English
Woods Hole Oceanographic Institution , Woods Hole, Mass
Other titlesPacific Equatorial Undercurrent.
Statementby Esther Collison Brady.
SeriesWHOI -- 90-51., WHOI (Series) -- 90-51.
The Physical Object
Pagination216 p. :
ID Numbers
Open LibraryOL18001504M

Details Observations of wave-mean flow interaction in the Pacific Equatorial Undercurrent EPUB

The Equatorial Undercurrent, recently observed in the central Observations of wave-mean flow interaction in the Pacific Equatorial Undercurrent book Ocean by Cromwell, Montgomery, and Stroup, is a narrow eastward current occupying the lower part of the surface layer at the.

Observations of wave-mean flow interaction in the Pacific equatorial undercurrent. By Esther C Brady. Get PDF (11 MB) Abstract.

by Esther Collison (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, and, Woods Hole Oceanographic Institution, GRSN Includes bibliographical Author: Esther C Brady.

We use a linear shallow-water model to investigate the global circulation of the atmospheres of tidally locked planets. Simulations, observations, and simple models show that if these planets are sufficiently rapidly rotating, their atmospheres have an eastward equatorial jet and a hot-spot east of the substellar point.

We linearize the shallow-water model about this eastward flow and its Cited by: 6. We propose a new, simple model – but one which has far-reaching consequences – to describe the interaction between waves that propagate across the Pacific Ocean and the Equatorial Undercurrent (EUC).

This involves a detailed discussion of the full linear problem as it relates to the dynamic coupling between the surface waves and the internal waves on the by: Wave Action and Wave-Mean Flow Interaction, with Application to Stratified Shear Flows R Grimshaw Annual Review of Fluid Mechanics Near-Inertial Internal Gravity Waves in the Ocean Matthew H.

Alford, Jennifer A. MacKinnon, Harper L. Simmons, and Jonathan D. NashCited by: The Rossby wave provides a mechanism by which wind energy at annual period can enter the deep equatorial Pacific Ocean, and seems to account for the observation of an annual cycle in.

Tsuchiya M () Subsurface countercurrents in eastern equatorial Pacific Ocean. Wave-mean flow interactions in the equatorial ocean. Annu Rev Fluid Mech – CrossRef Google Scholar. Neelin JD, Latif M, Jin FF () Dynamics of coupled ocean-atmosphere models - the tropical problem.

Boyd J.P. () An Observational Author: John P. Boyd. Many middle atmosphere phenomena, such as, for example, sudden stratospheric warmings, can be described in terms of the interaction between the zonal mean flow and eddy disturbances on the flow. In this section, wave-mean-flow interactions are discussed for extratropical phenomena, which are well described by quasi-geostrophic PV dynamics, and for the equatorial quasi-biennial oscillation (QBO).Author: James R.

Holton. This chapter describes the wave–mean-flow interaction in the middle atmosphere. An important accompaniment to any form of separation of atmospheric quantities into mean-flow and wave parts is the development of a suitable theoretical framework for the diagnosis and Cited by: 9.

Kinematics of the Pacific Equatorial Undercurrent: a Eulerian and Lagrangian approach Wave-mean flow interactions in the equatorial ocean. Ann. Rev. Fluid Mech.,[bibtex-entry] J. Toole, R. Millard, Z. Wang, and S. Observations of the Pacific North Equatorial Current bifurcation at the Philippines coast.

Abstract. The nature of internal gravity waves is described with special emphasis on their ability to transport energy and momentum. The conditions under which these fluxes interact with the mean state of the atmosphere are described and the results are applied to various problems of the upper atmosphere, including the quasi-biennial oscillation, the heat budget of the thermosphere, the Cited by: model of the Pacific equatorial upwelling zone.

Journal of Physical Oceanography, 24, Brady, E. C., Observations of wave-mean flow interaction in the Pacific Equatorial Undercurrent.

Thesis. MIT/WHOI Joint Program, WHOI, pp. Bryden, H. and Esther C. Brady, Eddy momentum and heat fluxes and their effects on.

As for (III), the importance of the interactions between waves and currents is highlighted by the fact that the underlying current field in the equatorial Pacific, generated by the prevailing westerly ambient wind pattern and the forces created by the Earth’s rotation (see the discussion in [3, 8]), presents flow-reversal: an eastward jet Cited by: 6.

The book is particularly notable for its even-handed treatment of the ocean and the atmosphere and its synthetic discussion of observations, numerics and analytic methods.

Other unique features include signposted guides to unsettled research problems, extensive historical notes Cited by: Equatorial Wave–Current Interactions A. Constantin1,2 1 Faculty of Mathematics, (the Equatorial Undercurrent) is sandwiched between a westward surface Observations provide evidence for highly nonlinear regimes of internal wave motion.

While explicitCited by: 6. Esther C. Brady, Interannual heat transport in a numerical model of the Pacific equatorial upwelling zone. Journal of Physical Oceanography, 24, Esther C.

Brady, Observations of wave-mean flow interaction in the Pacific Equatorial Undercurrent. Thesis.

Description Observations of wave-mean flow interaction in the Pacific Equatorial Undercurrent EPUB

MIT/WHOI Joint Program, WHOI, pp. Wind Forced Wave–Mean Flow Interactions in the Equatorial Waveguide. Work against the dominant vertical shear is the dominant wave energy loss for the case of a mean South Equatorial Current–Equatorial Undercurrent system, illustrating the need for high vertical resolution in equatorial ocean models.

Implications of these results Cited by: 5. The equatorial current system is best developed in the Pacific Ocean, where the surface waters are under the cumulative influence of the prevailing Trade Winds over the greatest distances.

The winds over the Indian Ocean change seasonally as a result of the differential heating of. Some basic characteristics of the Pacific equatorial deep jets are well established (Firing ; Ponte and Luyten ; Muench et al.

).The jets form vertically alternating layers of ±5 cm s −1 zonal flow with vertical wavelengths of – m straddling ±2° of the equator. They span the depth range – m, insulated from the surface by the Equatorial Undercurrent and the Cited by:   However, in the Pacific, vertical modes of order 3 and higher are all subjected to critical layer dissipation in the equatorial undercurrent, and the deep structure is consistent with wave-mean flow interaction effects superimposed on a first-mode baroclinic by:   The source of this Eliassen–Palm flux is the tropical instability waves that are generated along the shear between the Equatorial Undercurrent and the South Equatorial Current.

Corresponding author address: Markus Jochum, MIT, Room77 Cited by: Observations of wave-mean flow interaction in the Pacific equatorial under¬ current, ().

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Ocean-atmosphere interaction and the tropical clima¬ tology, part II: Why the Pacific Author: Stuart James Brentnall. Satellite observations have identified significant correlations between mesoscale sea surface temperature (SST) anomalies and near-surface atmospheric flow.

A hierarchy of mechanistic simulations is carried out using high-resolution regional climate models to assess the impact of mesoscale SST anomalies in the North Pacific on atmospheric Cited by: 3. A bibliography designed for my own use. @ARTICLE{McCalpin87, author={J. McCalpin}, title={A note on the reflection of low-frequency equatorial {R}ossby waves from realistic western boundaries}, journal={J.

Phys. Oceanogr.}, volume={17}, number={}, pages={1,}, year={}, keyword={Rossby,reflection,intraseasonal}, comments={The shape of the western boundary would. According to current study, the South Pacific has substantial impacts on the water properties throughout the Maritime Continent and the mass-energy exchanges between the Pacific and Indian Oceans.

Upper-ocean horizontal velocity and divergence were estimated from shipboard observations taken from in the equatorial Pacific between degreesW and 95 degreesW.

The other line of inquiry relates to linear, time-dependent equatorial wave theory, which first found expression in an oceanic context in the work of Blandford () and Moore (1 ).

In contrast, until the mid-I s there was very little progress in the theory of wave-mean flow interactions in the equatorial. The seasonal cycle is a prominent mode of climate variability in the equatorial Pacific. It results ultimately from solar forcing, modified by coupled ocean–atmosphere–land interactions (Li and Philander ).Year-to-year variations in the seasonal cycle are associated with El Niño and the Southern Oscillation (ENSO), a perturbation in the climate systems that affects the lives of Cited by: On t.p., "[degrees]" is represented by the mathematical symbol.

Title as it appears in the June M.I.T. Graduate List: The transport and structure of the Brazil Current between 27[degrees] and. Zonal Propagation of Near-Surface Zonal Currents in Relation to Surface Wind Forcing in the Equatorial Indian Ocean In the equatorial Pacific and Atlantic Oceans, the westward-flowing South Equatorial Current M.

J., and P. Ripa, Wave-mean flow interactions in the equatorial ocean. Annu. by: 6. VELOCITY OBSERVATIONS IN THE EQUATORIAL THERMOCLINE DURING GATE R. H. Weisberg, L. MillerA. Horigan* and J. A. Knauss* (received 30 August ; revised 1 February ) Abstract--Velocity time series measured during GATE below the Equatorial Undercurrent are by: A.

Constantin, R.S. Johnson, A new, nonlinear, three-dimensional model for ocean flows, motivated by some observations of the Pacific Equatorial Undercurrent and thermocline, submitted for by: The atmospheric response to ENSO, and other boundary forcings, includes Rossby waves and localized eddy–mean flow interaction, which can both result in regional teleconnection patterns.

In this section we explore the influence of the Hadley cell, stationary waves, and eddy–mean flow interactions on zonal and regional teleconnection patterns Cited by: