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Long-term changes in the North Atlantic current system and their biological implications

Published online by Cambridge University Press:  05 December 2011

A. H. Taylor
A. H. Taylor
Affiliation:
Institute for Marine Environmental Research, Plymouth
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Synopsis

Evidence is presented to show that the dominant mode of temperature change of the last 25 years, in the North Atlantic, has recurred throughout the last 100 years. Temperatures in the NE Atlantic, where this mode is especially prominent, tend to be inversely related to the strength of the Trade and Westerly Winds. The mode of temperature change, which extends through the top 250 m and involves corresponding salinity changes in the NE Atlantic, is interpreted as resulting from a shift in the North Atlantic Current system, wind-induced increases in the transport of the North Atlantic Gyre being accompanied by a radial shrinkage of the current system and a reduction of the warm water discharge to the north. A theoretical analysis, relating this current change to a shift in the separation of the Gulf Stream from the North American coast, is attempted to examine the consequences of this interpretation

Type
Research Article
Information
Proceedings of the Royal Society of Edinburgh, Section B: Biological Sciences , Volume 76 , Issue 1-3: Current Studies in the Marine Environment , 1978 , pp. 223 - 243
Copyright
Copyright © Royal Society of Edinburgh 1978

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References

Bjerknes, J., 1964. Atlantic air-sea interaction. Adv. Geophys., 10, 1–82.CrossRefGoogle Scholar
Bryan, K. and Cox, M. D., 1967. A numerical investigation of the oceanic general circulation. Tellus, 19, 54–80.Google Scholar
Bunker, A. F., 1976. Computations of surface energy flux and annual air-sea interaction cycles of the North Atlantic Ocean. Mon. Weath. Rev., 104, 1122–1140.2.0.CO;2>CrossRefGoogle Scholar
Colebrook, J. M., 1976. Trends in the climate of the North Atlantic Ocean over the last 100–120 years. Nature, Lond., 263, 576–577.CrossRefGoogle Scholar
Dickson, R. R., Lamb, H. H., Malmberg, S. A. and Colebrook, J. M., 1975. Climatic reversal in the northern North Atlantic. Nature, Lond., 256, 479–482.Google Scholar
Fofonoff, N. P., 1962. Machine computations of mass transport in the North Pacific Ocean. J. Fish. Res. BdCan., 19, 1121–1141.CrossRefGoogle Scholar
Gill, A. E., 1971. Ocean models. Phil. Trans. Roy. Soc. Lond., A270, 391–414.Google Scholar
Holland, W. R., 1973. Baroclinic and topographic influences on the transport in western boundary currents. Geophys. Fluid Dyn., 4, 187–210.CrossRefGoogle Scholar
Iselin, C.O'D., 1940. Preliminary report on long-period variations in the transport of the Gulf Stream System. Papers Phys. Oceanogr. Met., 8.Google Scholar
Kendall, M. G. and Stuart, A., 1961. The advanced theory of statistics, 3. Hafner, New York.Google Scholar
Knauss, J. A., 1969. A note on the transport of the Gulf Stream. Deep Sea Res. (Suppl.), 16, 117–123.Google Scholar
Lamb, H. H. and Johnson, A. I., 1965. Secular variations of the atmospheric circulation since 1750. Geophys. Mem., Lond., 14, (110).Google Scholar
Malkus, J. S., 1962. Large-scale interactions. In The Sea,Hill, M. N., Ed. 1, 88–285. Interscience, New York—London.Google Scholar
Martin, J. H., 1972. Marine climate changes in the north-east Atlantic, 1900–1966. Rapp. Cons. Explor. Mer, 162, 213–219.Google Scholar
Needler, G. T., 1967. A model for the thermohaline circulation in an ocean of finite depth. J. Mar. Res., 25, 329–342.Google Scholar
Parsons, A. T., 1969. Two layer model of Gulf Stream separation. J. Fluid Mech., 39, 511–528.CrossRefGoogle Scholar
Pinoree, R. D., 1973. A component of Labrador Sea Water in the Bay of Biscay. Deep Sea Res., 18, 711–717.Google Scholar
Ratcliffe, R. A. S. and Murray, R., 1970. New lag associations between N. Atlantic sea temperature and European pressure applied to long-range weather forecasting. Q. Jl Roy. Met. Soc, 96, 226–246.Google Scholar
Robinson, A. R., Harrison, D. E., Mintz, Y. and Semtner, A. J., 1977. Eddies and the general circulation of an idealised oceanic gyre; a wind and thermally driven primitive equation numerical experiment. J. Phys. Oceanogr., 7, 182–207.Google Scholar
Smed, J., 1965. Variation of the temperature of the surface water in areas of the northern North Atlantic, 1876–1961. Spec. Publs Int. Commun. N.W. Atlant. Fish., 6, 821–826.Google Scholar
Stewart, R. W., 1964. The influence of friction on inertial models of ocean circulation. In Studies on Oceanography, 3–9. Univ. Washington Press.Google Scholar
Sverdrup, H. U., Johnson, M. W. and Fleming, R. H., 1942. The oceans: their physics, chemistry and general biology. Prentice-Hall, Englewood Cliffs, N.J.Google Scholar
Us Naval Oceanographic Office, 1967. Oceanographic Atlas of the North Atlantic Ocean, Section II: Physical Properties Pub., 700.Google Scholar
Veronis, G., 1969. On theoretical models of the thermocline circulation, Deep Sea Res. (Suppl.), 16, 301–323.Google Scholar
Veronis, G.,, 1973. Model of world ocean: I. wind-driven, two-layer. J. Mar. Res., 31, 228–288.Google Scholar
Weare, B.C., 1977. Empirical orthogonal analysis of Atlantic Ocean surface temperatures. Q. Jl Roy. Met. Soc, 103, 467–478.Google Scholar
Worthington, L. V., 1976. On the North Atlantic circulation. John Hopkins Oceanogr. Stud., 6.Google Scholar