| Exploring climatic signal in tree-ring width chronologies of European Russia: spatial change and perspectives for paleoclimatic reconstructions |
| Paper ID : 1038-ADA2013 |
| Authors: |
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Vladimir Matskovskiy * 119017, Staromonetny pereulok 29, Moscow, Russia |
| Abstract: |
| The European part of Russia, especially its central part, is still poorly studied in terms of dendroclimatology. In this study we analyzed the climatic response of 55 tree-ring width chronologies of living pines (Pinus sylvestris), spruces (Picea abies, Picea obovata) and larches (Larix sibirica) in European Russia. For this analysis we used two reference periods (AD 1950-1990 and AD 1901-1990) and 20 different meteorological parameters calculated from the following archives: daily and monthly data from more than 150 meteorological stations, CRU TS 3.0 gridded data and 20th Century Reanalysis. Also we analyzed growth response to the main teleconnection indexes (NAO, EA, EAWR, SCAND, POLAR), Palmer Drought Severity Index and CPC Soil Moisture. Mapping the results of the analyses has allowed us to identify the most important climatic parameters which influence the radial growth of conifer trees in the northern and central parts of European Russia. It is obvious that all conifers growing to the north of 60°N react positively to summer temperature (minimum, maximum, mean temperatures of the warm season and individual months). To the south, at the latitude of 54°-56° N the signal is changing and the ring width depends on the combination of two parameters – warmth and humidity (drought index PDSI, precipitation, relative humidity of vegetation season). This border coincides with the modern border of broadleaved and boreal forests. Climatic parameters that form “pointer years” were also defined for all the chronologies of living trees. Currently we are in progress of constructing and updating six long chronologies that contain samples from archaeological and architectural wood. Two of them – “Vologda region” (60°N 39°E; 1085-2009 AD) and “Solovki islands” (65°N 36°E; 1187-2008 AD) chronologies – are already suitable for paleoclimatic analysis. “Solovki islands” chronology showed the highest correlations with the reconstruction of summer temperatures for Kola Peninsula and total solar irradiance reconstruction, while “Vologda region” chronology better correlates with the reconstruction of Northern Hemisphere annual temperature. Comparison of “pointer years” in the chronologies with historical data about extreme climatic events showed that 25% of all the events fall into “pointer years”, and vice versa, 33% of negative pointer years fall into historical data. All these results demonstrate good paleoclimatic potential of tree ring width chronologies in European Russia. |
| Keywords: |
| Dendroclimatology, climatic response, East-European plain, Russian plain, European Russia, Pinus sylvestris, Picea abies, Picea obovata, Larix sibirica, pointer years |
| Status : Abstract Accepted |
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