BlarquezGirardinLeysEtAl2013

Référence

Blarquez, O., Girardin, M.P., Leys, B., Ali, A.A., Aleman, J.C., Bergeron, Y., Carcaillet, C. (2013) Paleofire reconstruction based on an ensemble-member strategy applied to sedimentary charcoal. Geophysical Research Letters, 40(11):2667-2672. (Scopus )

Résumé

Paleofire events obtained from the statistical treatment of sedimentary charcoal records rely on a number of assumptions and user's choices, increasing the uncertainty of reconstructio\ns. Among the assumptions made when analyzing charcoal series is the choice of a filtering method for raw Charcoal Accumulation Rate (CHARraw). As there is no ultimate CHAR raw filtering method, we propose an ensemble-member approach to reconstruct fire events. We modified the commonly used procedure by including a routine replicating the analysis of a charcoal record using custom smoothing parameters. Dates of robust fire events, uncertainties in fire-return intervals and fire frequencies are derived from members' distributions. An application of the method is used to quantify uncertainties due to data treatment in two CHARraw sequences from two different biomes, subalpine and boreal. © 2013 American Geophysical Union. All Rights Reserved.

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@ARTICLE { BlarquezGirardinLeysEtAl2013,
    AUTHOR = { Blarquez, O. and Girardin, M.P. and Leys, B. and Ali, A.A. and Aleman, J.C. and Bergeron, Y. and Carcaillet, C. },
    TITLE = { Paleofire reconstruction based on an ensemble-member strategy applied to sedimentary charcoal },
    JOURNAL = { Geophysical Research Letters },
    YEAR = { 2013 },
    VOLUME = { 40 },
    PAGES = { 2667-2672 },
    NUMBER = { 11 },
    ABSTRACT = { Paleofire events obtained from the statistical treatment of sedimentary charcoal records rely on a number of assumptions and user's choices, increasing the uncertainty of reconstructio\ns. Among the assumptions made when analyzing charcoal series is the choice of a filtering method for raw Charcoal Accumulation Rate (CHARraw). As there is no ultimate CHAR raw filtering method, we propose an ensemble-member approach to reconstruct fire events. We modified the commonly used procedure by including a routine replicating the analysis of a charcoal record using custom smoothing parameters. Dates of robust fire events, uncertainties in fire-return intervals and fire frequencies are derived from members' distributions. An application of the method is used to quantify uncertainties due to data treatment in two CHARraw sequences from two different biomes, subalpine and boreal. © 2013 American Geophysical Union. All Rights Reserved. },
    COMMENT = { Export Date: 27 August 2013 Source: Scopus CODEN: GPRLA doi: 10.1002/grl.50504 },
    ISSN = { 00948276 (ISSN) },
    KEYWORDS = { Charcoal, Paleofire, Sediment, Accumulation rates, Data treatment, Filtering method, Fire event, Fire frequencies, Paleofire, Smoothing parameter, Statistical treatment, Fire hazards, Sedimentology, Sediments, Charcoal, accumulation rate, biome, charcoal, paleoenvironment, reconstruction, sedimentary sequence, subalpine environment, uncertainty analysis },
    OWNER = { Luc },
    TIMESTAMP = { 2013.08.27 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84879897121&partnerID=40&md5=c3e77a7d400ca4e6a0608a1b127f5894 },
}

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