The climatic interpretation of pan-European signature years in oak ring-width series

Abstract

Large-scale signature years, in which oak growth across much of northern Europe varies consistently, are identified. Postulating that the likely cause of such widespread departures in growth is climatic, it is shown that these years were characterized by pan-European anomalies in soil-moisture availability, rainfall and temperature, with enhanced growth associated with an extended period of increased soil-moisture availability and reduced growth associated with lower temperatures and reduced soil moisture. These climatic anomalies are, in turn, associated with a large-scale and persistent perturbation in the atmospheric circulation that involves the circumpolar vortex and appears related to the Arctic Oscillation. The 2000-year record of signature-year occurrence shows variations in frequency at the decadal and century levels. It is necessary to interpret this record with caution. Nevertheless, these results do confirm earlier suggestions that large-scale climatic information is contained in regional composite archaeological chronologies. With supporting evidence from other sources, it should be possible to extract useful proxy climate data, even though the precise provenance of the timbers from which the records were derived might not be known.

Keywords

Dendroclimatology tree rings signature years soil moisture Quercus spp.European climate late Holocene Arctic Oscillation

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References

Allan, R.J. , Lindesay, J. and Parker, D. 1996: El Niño Southern Oscillation and Climatic Variability. Canberra: CSIRO .

Baillie, M.G.L. 1983: Is there a single British Isles oak tree-ring signal? In Proceedings of the 22nd Symposium on Archaeometry, University of Bradford.

Baillie, M.G.L. 1995: A slice through time: dendrochronologyand precision dating. London: Batsford .

Briffa, K.R. 1999: Analysis of dendrochronological variability and associated natural climates – the last 10000 years (ADVANCE-10K) . Pages Newsletter 7, 6–8 .

Briffa, K.R. and Wigley, T.M.L. 1985: Soil moisture reconstruction using tree rings . Climate Monitor 14, 106–113 .

Briffa, K.R. , Baillie, M.G.L. , Bartholin, T. , Bonde, N. , Kalela-Brundin, M. , Eckstein, D. , Eronen, M. , Frenzel, B. , Friedrich, M. , Groves, C. , Grudd, H. , Hantemirov, R. , Hillam, J. , Jansma, E. , Jones, P.D. , Karlén, W. , Leuschner, H.H. , Lindholm, M. , Makowka, I. , Naurzbaev, M.M. , Nogler, P. , Osborn, T.J. , Riemer, T. , Salmon, M. , Sander, C. , Schweingruber, F.H. , Shiyatov, S.G. , Spain, J. , Spurk, M. , Timonen, M. , Tyers, I. , Vaganov, E.A. , Wazny, T. and Zetterberg, P. 2000: Analysis of dendrochronological variability and associated natural climates in Eurasia – the last 10000 years (ADVANCE-10K). In Proceedings of the European Climate Science Conference, Vienna, October 1998. (CD ROM available from Biodiversity and Global Change Unit, Research DG, European Commission, Brussels.)

Briffa, K.R. , Jones, P.D. and Hulme, M. 1994: Summer moisture variability across Europe, 1892–1991: an analysis based on the Palmer Drought Severity Index . International Journal of Climatology 14, 475–506 .

Fritts, H.C. 1976: Tree rings and climate. Academic Press, London .

Gray, B.M. and Pilcher, J.R. 1983: Testing the significance of summary response functions . Tree-Ring Bulletin 43, 31–38 .

10.

Hughes, M.K. , Kuniholm, P.I. , Eischeid, J.K. , Garfin, G. , Griggs, C.B. and Latini, C. 2001: Aegean tree-ring signature years explained . Tree-Ring Research 57, 67–73 .

11.

Hulme, M. , Osborn, T.J. and Johns, T.C. 1998: Precipitation sensitivity to global warming: Comparison of observations with HadCM2 simulations . Geophysical Research Letters 25, 3379–3382 .

12.

Jones, P.D. , New, M. , Parker, D.E. , Martin, S. and Rigor, I.G. 1999: Surface air temperature and its changes over the past 150 years . Reviews of Geophysics 37, 173–199 .

13.

Kelly, P.M. and Wright, P.B. 1978: The European drought of 1975–6 and its climatic context . Progress in Physical Geography 2, 237–263 .

14.

Kelly, P.M. , Jones, P.D. and Jia, P.Q. 1999: Spatial patterns of variability in the global surface air temperature data set . Journal of Geophysical Research 104, 24237–24256 .

15.

Kelly, P.M. , Munro, M.A.R. , Hughes, M.K. and Goodess, C.M. 1989: Climate and signature years in West European oaks . Nature 340, 57–60 .

16.

Lamb, H.H. 1976: Climate in historical times. In Lamb, H.H. , Climate, present, past and future, volume 2: climatic history and the future. London: Methuen , 423–473.

17.

Pilcher, J.R. and Gray, B.M. 1982: The relationship between oak tree growth and climate in Britain . Journal of Ecology 70, 297–304 .

18.

Thompson, D.W.J. and Wallace, J.M. 1998: The Arctic Oscillation signature in the wintertime geopotential height and temperature fields . Geophysical Research Letters 25, 1297–1300 .

19.

Thompson, D.W.J. and Wallace, J.M. 2000: Annular modes in the extratropical circulation. Part I: month-to-month variability . Journal of Climate 13, 1000–1016 .

20.

Thompson, D.W.J. , Wallace, J.M. and Hegerl, G. 2000: Annular modes in the extratropical circulation . Part II: trends. Journal of Climate 13, 1018–1036 .