TreydteFrankEsperEtAl2007

Référence

Treydte, K., Frank, D., Esper, J., Andreu, L., Bednarz, Z., Berninger, F., Boettger, T., D'Alessandro, C. M., Etien, N., Filot, M., Grabner, M., Guillemin, M. T., Gutierrez, E., Haupt, M., Helle, G., Hilasvuori, E., Jungner, H., Kalela-Brundin, M., Krapiec, M., Leuenberger, M., Loader, N. J., Masson-Delmotte, V., Pazdur, A., Pawelczyk, S., Pierre, M., Planells, O., Pukiene, R., Reynolds-Henne, C. E., Rinne, K. T., Saracino, A., Saurer, M., Sonninen, E., Stievenard, M., Switsur, V. R., Szczepanek, M., Szychowska-Krapiec, E., Todaro, L., Waterhouse, J. S., Weigl, M., Schleser, G. H. (2007) Signal strength and climate calibration of a European tree-ring isotope network. Geophysical Research Letters, 34(24):L24302.

Résumé

We present the first European network of tree ring delta C-13 and delta O-18, containing 23 sites from Finland to Morocco. Common climate signals are found over broad climatic-ecological ranges. In temperate regions we find positive correlations with summer maximum temperatures and negative correlations with summer precipitation and Palmer Drought Severity Indices (PDSI) with no obvious speciesspecific differences. Regional delta C-13 and delta O-18 chronologies share high common variance in year-to-year variations. Long-term variations, however, exhibit differences that may reflect spatial variability in environmental forcings, age trends and/or plant physiological responses to increasing atmospheric CO2 concentration. Rotated principal component analysis (RPCA) and climate field correlations enable the identification of four sub-regions in the delta O-18 network - northern and eastern Central Europe, Scandinavia and the western Mediterranean. Regional patterns in the delta C-13 network are less clear and are timescale dependent. Our results indicate that future reconstruction efforts should concentrate on delta O-18 data in the identified European regions.

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@ARTICLE { TreydteFrankEsperEtAl2007,
    AUTHOR = { Treydte, K. and Frank, D. and Esper, J. and Andreu, L. and Bednarz, Z. and Berninger, F. and Boettger, T. and D'Alessandro, C. M. and Etien, N. and Filot, M. and Grabner, M. and Guillemin, M. T. and Gutierrez, E. and Haupt, M. and Helle, G. and Hilasvuori, E. and Jungner, H. and Kalela-Brundin, M. and Krapiec, M. and Leuenberger, M. and Loader, N. J. and Masson-Delmotte, V. and Pazdur, A. and Pawelczyk, S. and Pierre, M. and Planells, O. and Pukiene, R. and Reynolds-Henne, C. E. and Rinne, K. T. and Saracino, A. and Saurer, M. and Sonninen, E. and Stievenard, M. and Switsur, V. R. and Szczepanek, M. and Szychowska-Krapiec, E. and Todaro, L. and Waterhouse, J. S. and Weigl, M. and Schleser, G. H. },
    TITLE = { Signal strength and climate calibration of a European tree-ring isotope network },
    JOURNAL = { Geophysical Research Letters },
    YEAR = { 2007 },
    VOLUME = { 34 },
    PAGES = { L24302 },
    NUMBER = { 24 },
    MONTH = { dec },
    AF = { Treydte, K.EOLEOLFrank, D.EOLEOLEsper, J.EOLEOLAndreu, L.EOLEOLBednarz, Z.EOLEOLBerninger, F.EOLEOLBoettger, T.EOLEOLD'Alessandro, C. M.EOLEOLEtien, N.EOLEOLFilot, M.EOLEOLGrabner, M.EOLEOLGuillemin, M. T.EOLEOLGutierrez, E.EOLEOLHaupt, M.EOLEOLHelle, G.EOLEOLHilasvuori, E.EOLEOLJungner, H.EOLEOLKalela-Brundin, M.EOLEOLKrapiec, M.EOLEOLLeuenberger, M.EOLEOLLoader, N. J.EOLEOLMasson-Delmotte, V.EOLEOLPazdur, A.EOLEOLPawelczyk, S.EOLEOLPierre, M.EOLEOLPlanells, O.EOLEOLPukiene, R.EOLEOLReynolds-Henne, C. E.EOLEOLRinne, K. T.EOLEOLSaracino, A.EOLEOLSaurer, M.EOLEOLSonninen, E.EOLEOLStievenard, M.EOLEOLSwitsur, V. R.EOLEOLSzczepanek, M.EOLEOLSzychowska-Krapiec, E.EOLEOLTodaro, L.EOLEOLWaterhouse, J. S.EOLEOLWeigl, M.EOLEOLSchleser, G. H. },
    DI = { ARTN L24302 },
    PG = { 6 },
    SN = { 0094-8276 },
    TC = { 0 },
    UT = { ISI:000251877100002 },
    ABSTRACT = { We present the first European network of tree ring delta C-13 and delta O-18, containing 23 sites from Finland to Morocco. Common climate signals are found over broad climatic-ecological ranges. In temperate regions we find positive correlations with summer maximum temperatures and negative correlations with summer precipitation and Palmer Drought Severity Indices (PDSI) with no obvious speciesspecific differences. Regional delta C-13 and delta O-18 chronologies share high common variance in year-to-year variations. Long-term variations, however, exhibit differences that may reflect spatial variability in environmental forcings, age trends and/or plant physiological responses to increasing atmospheric CO2 concentration. Rotated principal component analysis (RPCA) and climate field correlations enable the identification of four sub-regions in the delta O-18 network - northern and eastern Central Europe, Scandinavia and the western Mediterranean. Regional patterns in the delta C-13 network are less clear and are timescale dependent. Our results indicate that future reconstruction efforts should concentrate on delta O-18 data in the identified European regions. },
    KEYWORDS = { DROUGHT SEVERITY INDEX; STABLE-ISOTOPES; FUTURE CHANGES; SOIL-MOISTURE; PRECIPITATION; TEMPERATURE; ALPS; VARIABILITY; DELTA-C-13; CELLULOSE },
    OWNER = { brugerolles },
    TIMESTAMP = { 2008.01.25 },
}

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