Reconstructing Summer Temperatures in Northern Fennoscandinavia Back to A.D. 1700 Using Tree-Ring Data from Scots Pine

Briffa, Keith R.; Jones, Phil; Pilcher, J. R.; Hughes, Malcolm K.

doi:10.2307/1551336

Cited by 182 publications

(166 citation statements)

References 15 publications

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“…Because response functions give information between tree-ring and climate of many years, our results suggest that temperature is more important than precipitation in the studied area. This strong negative correlation between summer temperature and growth is similar to the results reported for Pinus sylvestris [6,12,32], Pinus taeda [13], Pinus uncinata [32,34] and is consistent with findings obtained for old naturally Pinus Table III. Variations of minimum (T n ), maximum (T x ), mean temperatures (T m ), thermal amplitude (T x -T n ) and precipitation (P) at decadal scale for the year and the growing season (GS; May to September).…”

Section: Discussionsupporting

confidence: 91%

Climatic signals in earlywood, latewood and total ring width of Corsican pine from western France

Lebourgeois¹

2000

Ann. For. Sci.

131

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-The influence of climatic factors on the growth of Corsican pine, growing at low elevation on acidic well-drained soils in western France, was evaluated by comparing annual earlywood, latewood and total ring indices with monthly temperature and precipitation data collected at Angers over the period . Latewood formation appeared to be more sensitive to climate than earlywood formation. Pointer years analysis and climatic models showed that summer drought was a major limiting-growth factor in the studied area. Extreme growth reductions specially highlighted the effects of low precipitation whereas response functions clearly underlined the importance of temperature. The climatic models accounted for 46%, 37% and 42% of the variability of total ring, earlywood and latewood indices, and suggested that the period of earlywood formation occurred mainly in early spring (May) whereas the growth of the latewood band was maximum in summer (July). Winter photosynthesis and the advance in the timing of the resumption of cambial activity were possible causes of the positive winter temperature correlation with earlywood. A cool and wet spring was also beneficial to growth as it affected the water balance of the trees at the beginning of the growing season. Prior October weather conditions also influenced growth, suggesting a preconditioning of the current year's growth by climate during the previous year. The regional climatic data revealed: no change in precipitation and thermal amplitude between 1950-1997; a significant (α = 0.01) increase in mean annual temperature of 1.1°C, mean annual minimum temperature (1.5°C), mean summer (July-August) temperature (2.2°C) and minimum summer temperature (2.3°C). By increasing summer water stress, a steady rise may induce growth decrease and probably forest decline in the next years. These results should be taken into account when predicting possible responses of Corsican pine plantations to global change Pinus nigra / climate / global change / pointer years / earlywood / latewood / ring width / Corsican pine Résumé -Analyse dendroclimatique du pin laricio de Corse dans l'ouest de la France. L'effet du climat sur la croissance de peuplements de pin laricio de Corse poussant à faible altitude sur des sols acides et bien drainés dans l'ouest de la France a été évalué en comparant la croissance annuelle du bois initial, du bois final et du cerne complet avec les données mensuelles de température et de précipitation collectées à Angers sur la période 1922-1991. La formation du bois final est apparue plus sensible au climat que celle du bois initial. L'analyse des années caractéristiques et des modèles climatiques a montré que la sécheresse estivale jouait un rôle majeur dans les variations inter-annuelles de croissance. Les réductions extrêmes de croissance sont liées aux faibles précipitations tandis que les fonctions de réponse soulignent le rôle de la température. Les modèles climatiques expliquent entre 37 et 46 % de la variabilité inter-annuelle de la croissance selon le compa...

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Section: Discussionsupporting

confidence: 91%

Climatic signals in earlywood, latewood and total ring width of Corsican pine from western France

Lebourgeois¹

2000

Ann. For. Sci.

131

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“…and has encouraged attempts to assess of the climatic significance of individual eruptions. European dendrochronological studies have reconstructed long term temperature trends in some detail, but largely fail to record an anomalous growth year in either 1783-1784 or 1815-1816_Briffa et al, 1988a.. This work identified several years where significant departure from the mean occurred _Table 3. but these are not associated with volcanic forcing of climate.…”

Section: Dendrochronological Evidencementioning

confidence: 94%

“…Studies of ring-width _LaMarche, 1974;Baillie, 1988., ring-colour _Filion et al, 1986., isotopic ratio _Epstein and Krishnamurthy, 1990., damaged annual rings _LaMarche and Hirschboek, 1984.and late and early-wood density _Conkey, 1986; Graumlich and Brubaker, 1986;Briffa et al, 1988aBriffa et al, ,b, 1990Scuderi, 1990., allow the reconstruction of the macro and micro environmental influences on a tree's location. The longevity of particular tree species, the survival of others in fossil form and their wide latitudinal and geographical distribution, permits the reconstruction of climatic change _LaMarche, 1974; Fritts et al, 1979Fritts et al, , 1981.…”

Section: Dendrochronological Evidencementioning

confidence: 99%

Volcanoes as agents of past environmental change

Sadler

Grattan

1999

Global and Planetary Change

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In recent years a sequence of papers has discussed the impact of volcanic eruptions upon global environments. Emphasis has been placed upon their potential role in depressing hemispheric temperatures and affecting global weather patterns. Many researchers have related ecological, environmental and historical phenomena to individual eruptions. However, the linking of spatially and temporally disparate phenomenon to eruption chronologies involves several levels of supposition and at each level in the argument greater potential for error arises. This paper examines critically a number of important issues that arise from these studies. How valid are the linkages that are drawn? Do they establish a dependent relationship or merely coincidence? The validity of linking volcanic activity with disparate spatial and temporal events in the climatic, historical and palaeoecological records is addressed. There can be little doubt that volcanoes have a great effect on proximal climates and environments, but their global impact is less well understood. The scale and magnitude of responses to large eruptions such as the historically notorious Tambora_1815.and Mt. Pinatubo_1991.is far from consistent. This paper urges the adoption of a more critical perspective when considering these issues.

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“…The skill of the regression equation for the reconstruction back to AD 1440 was tested by cross-calibration/verification for the sub-periods 1954-1980 and 1981-2006, and by a leave-one-out cross-validation (LOOCV) (Michaelsen 1987) over the full-period 1954-2006. Evaluative statistics included the variance explained (R 2 ), the adjusted variance explained R 2 adj , the variance predicted (r 2 ), the sign test of both raw data and their first difference, the reduction of error (RE;Fritts 1976) and the coefficient of efficiency (CE; Briffa et al 1988). …”

Section: Tree Growth-climate Relationship and Climate Reconstructionmentioning

confidence: 99%

Early summer temperature reconstruction in the eastern Tibetan plateau since ad 1440 using tree-ring width of Sabina tibetica

Zhu

Shao

Yin

et al. 2011

Theor Appl Climatol

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Reconstructing Summer Temperatures in Northern Fennoscandinavia Back to A.D. 1700 Using Tree-Ring Data from Scots Pine

Cited by 182 publications

References 15 publications

Climatic signals in earlywood, latewood and total ring width of Corsican pine from western France

Climatic signals in earlywood, latewood and total ring width of Corsican pine from western France

Volcanoes as agents of past environmental change

Early summer temperature reconstruction in the eastern Tibetan plateau since ad 1440 using tree-ring width of Sabina tibetica

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