A POSSIBLE PALEOCLIMATIC IMPLICATION OF A RECENT CHANGE OF CORRELATIONS BETWEEN THE TREE-GROWTH AND THE CURRENT WARMING
https://doi.org/10.24057/2071-9388-2011-4-2-30-40
Abstract
Recent studies have revealed a reduced sensitivity of tree-growth to temperature at high Northern Hemisphere (NH) latitudes during recent decades. Causes of this reduction are not known, but it seems to be for certain that this reduction has important implications for paleoclimatic reconstructions based on tree-rings because there is a risk that warmer phases of paleoclimates can be essentially underestimated if the problem is not taken into account. We add some more observational evidences of the reduction and argue: it is a signal that temperatures recently have reached above optimum levels for the tree-growth in some areas of NH. If such equally warm, or warmer, phases existed in the past, and if tree-growth responded negatively to temperatures during these phases, it would be necessary to apply separate transfer functions to calibrate tree-ring records in terms of temperature for warmer and colder phases of the past climates.
About the Authors
Nina DatsenkoRussian Federation
Hydrometeorological Research Center of Russia, Bolshoy Predtechensky per., 9/11, Moscow, 123242 Russia
Nadezhda Ivashchenko
Russian Federation
Hydrometeorological Research Center of Russia Bolshoy Predtechensky per., 9/11, Moscow, 123242 Russia
References
1. Briffa, K.R. and Osborn T.J. (2002) Blowing hot and cold. Science, 295, 2227–2228.
2. Briffa, K.R., Schweingruber, F.H., Jones, P.D., Osborn, T.J., Shiyatov, S.G. and Vaganov, E.A.
3. (1998a) Reduced sensitivity of recent tree-growth to temperature at high northern latitudes.
4. Nature, 391, 678–682.
5. Briffa, K.R., Schweingruber, F.H., Jones, P.D., Osborn, T.J., Harris, I.C., Shiyatov, S.G., Vaganov, E.A.
6. and Grudd, H. (1998b) Trees tell of past climates: but are they speaking less clearly today?
7. Phil. Trans. R. Soc. Lond. B353, 65–73.
8. Briffa, K.R. et al. (2001) Low-frequency temperature variations from a northern tree ring
9. density network. J. Geophys. Res., D106, 2929–2941.
10. Crowley, T.J. and Lowery, T.S. (2000) How warm was the Medieval Warm Period? Ambio, 39,
11. –54.
12. Datsenko, N.M. (2005) Features of macro-scale climatic variation reproducing by dendrochronological
13. time series. Bulletin of the Russian Academy of Sciences, series geographical
14. , 27–34 – in Russian.
15. D’Arrigo, R., Wilson R., Liepert B., Cherubini P. (2007) On the “divergence problem” in northern
16. forests: a review of the tree-ring evidence and possible causes. Glob. Planet. Change,
17. (3–4), 289–305.
18. Esper, J., Cook, E.R. and Schweingruber, F.H. (2002) Low-frequency signals in long
19. tree-ring chronologies for reconstructing past temperature variability. Science, 295,
20. –2253.
21. Hughes, M.K. and Diaz, H.F. (1994) Was there a “Medieval Warm Period”, and if so, where
22. and when. Climatic Change, 26, 109–142.
23. Jones, P.D. et al. (1998) High-resolution paleoclimatic records for the last millennium:
24. interpretation, integration and comparison with general circulation model control run
25. temperatures. The Holocene, 8, 455–471.
26. Jones, P.D., New, M., Parker, D.E., Martin, S. and Rigor, I.G. (1999) Surface air temperature and
27. its changes over the past 150 years. Reviews Geophysics, 37, 173–199.
28. Jones, P.D., Osborn, T.J., Briffa, K.R., Folland, C.K., Horton, E.B., Alexander, L.V., Parker,
29. D.E. and Rayner, N.A. (2001) Adjusting for sampling density in grid box land and
30. ocean surface temperature time series. Journal of Geophysical Research, 106,
31. –3380.
32. Lamb, H.H. (1977) Climate: present, past, and future. L.: Barnes and Noble Publ. Vol. 2, 835 pp.
33. Loehle, C. (2009) A mathematical analysis of the divergence problem in dendroclimatology.
34. Climatic Change, 94, 233–245.
35. Mann, M.E., Bradley, R.S. and Hughes, M.K. (1998) Global-scale temperature patterns and
36. climate forcing over the past six centuries. Nature, 392, 779–787.
37. Mann, M.E., Bradley, R.S. and Hughes, M.K. (1999) Northern Hemisphere temperatures during
38. the past millennium: inferences, uncertainties and limitations. Geophys. Res. Letts., 26,
39. –762.
40. Rutherford, S.D., Mann, M.E., Osborn, T.J., Bradley, R.S., Briffa, K.R., Hughes, M.K., Jones, P.D.
41. (2005) Proxy-based Northern Hemisphere surface temperature reconstructions: sensitivity
42. to method, predictor network, target season and target domain. J. Climate, 18,
43. –2329.
44. Shiyatov, S.G. (1993) The upper timberline dynamics during the last 1100 years in the Polar
45. Ural Mountains. Palaeoklimaforschung, 9, 195–203.
46. Wilmking, M., D’Arrigo, R., Jakoby, G., Juday, G. (2005) Divergent growth responses in circumpolar
47. boreal forests. Geophys. Res. Lett., 32, L15715, doi;10.1029/2005GL023331.
Review
For citations:
Datsenko N., Ivashchenko N. A POSSIBLE PALEOCLIMATIC IMPLICATION OF A RECENT CHANGE OF CORRELATIONS BETWEEN THE TREE-GROWTH AND THE CURRENT WARMING. GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY. 2011;4(2):30-40. https://doi.org/10.24057/2071-9388-2011-4-2-30-40
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