Experimental tree planting in the plains

Keffer, Charles A.

doi:10.5962/bhl.title.66160

Cited by 2 publications

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“…DEPTH OF ISOPYCNAL SURFACE = 26.1 5 (Keffer, 1985) Figure 2. The depth of the ae= 26.15 surface in the Pacific Ocean in metres (from Keffer 1985).…”

Section: Latitudementioning

confidence: 99%

“…This area is far downwind of the Eurasian continent with little wintertime convection in the upper ocean. Keffer (1985) suggests that the high PV waters of the eastern Pacific are associated with the ventilation of low salinity waters in the Gulf of Alaska. The same marine climate prevails in the south-east Pacific, where a similar low salinity tongue forms off the coast of Chile.…”

Section: Observed Potential Vorticity Fieldsmentioning

confidence: 99%

“…The conservation of salinity and temperature of slowly moving water masses is a very remarkable characteristic of the ocean, which clearly sets it apart from the atmosphere. (Keffer 1985) illustrates the topography of the thermocline in the Pacific. Note that the pattern is dominated by two large depressions, each corresponding to the subtropical wind gyre in its hemisphere.…”

Section: Introductionmentioning

confidence: 99%

“…JUJFigure 6. Pattern of potential vorticity in the density interval uo = 26.25-26.75 based on theLevitus (1982) data set (fromKeffer 1985). Units as inFig.…”

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confidence: 99%

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Potential vorticity in models of the ocean circulation

Bryan

1987

Quart J Royal Meteoro Soc

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(Symom Mcmorial k c t u r e . 21 Mdy 1986) SliMMARYExisting observations suffice to give a qualitative description of the wind-driven and thermohaline components of the ocean circulation, but a hierarchy of analytical and numerical models is now needed for use in coupled ocean-atmosphere models of the earth's climate. Potential vorticity is a more appropriate diagnostic field variable than angular momentum for the ocean circulation because of the complicated geometry of ocean basins. Patterns of potential vorticity on surfaces of constant density help validate ocean circulation models, and give physical insight into how the ocean circulation works.High resolution models suggest that the lateral mixing of potential vorticity by mesoscale eddies along isopycnal surfaces is of the same order as large-scale advection, and that the assumption of inviscid, potentialvorticity-conserving flow in the thermocline is not appropriate for the real ocean. A satisfactory test of this conjecture will require the extensive measurements planned for the World Ocean Circulation Experiment. Models also indicate that the transport of water mass properties by mesoscale eddies is largely a mixing along isopycnal surfaces. The wcak temperaturc gradients along isopycnal surfaces in most areas of the ocean limit the effectiveness of the mesoscale eddies in transporting significant amounts of heat across latitude circles.

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“…DEPTH OF ISOPYCNAL SURFACE = 26.1 5 (Keffer, 1985) Figure 2. The depth of the ae= 26.15 surface in the Pacific Ocean in metres (from Keffer 1985).…”

Section: Latitudementioning

confidence: 99%

Section: Observed Potential Vorticity Fieldsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…JUJFigure 6. Pattern of potential vorticity in the density interval uo = 26.25-26.75 based on theLevitus (1982) data set (fromKeffer 1985). Units as inFig.…”

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confidence: 99%

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