Some New Mathematical Procedures in Dendroclimatology, with Examples from Switzerland and Morocco

Persistent Link:
http://hdl.handle.net/10150/261139
Title:
Some New Mathematical Procedures in Dendroclimatology, with Examples from Switzerland and Morocco
Author:
Guiot, J.; Berger, A. L.; Munaut, A. V.; Till, Cl.
Affiliation:
Institut d'Astronomie et de Géophysique; Laboratoire de Palynologie et Phytosociologie, Université Catholique de Louvain
Issue Date:
1982
Rights:
Copyright © Tree-Ring Society. All rights reserved.
Collection Information:
This item is part of the Tree-Ring Research (formerly Tree-Ring Bulletin) archive. It was digitized from a physical copy provided by the Laboratory of Tree-Ring research at The University of Arizona. For more information about this peer-reviewed scholarly journal, please email the Editor of Tree-Ring Research at editor@treeringsociety.org.
Publisher:
Tree-Ring Society
Journal:
Tree-Ring Bulletin
Citation:
Guiot, J., Berger, A.L., Munaut, A.V., Till, Cl. 1982. Some new mathematical procedures in dendroclimatology, with examples from Switzerland and Morocco. Tree-Ring Bulletin 42:33-48.
Abstract:
An original procedure and a new mathematical technique have been developed which allowed us to obtain more reliable climatic reconstructions than with prior methods. They have been tested for different sites in Switzerland and Morocco. First, cores that were too short and cores that were not coherent enough with others were excluded, using cross-spectral analysis. Second, detrending and master chronologies were calculated. Three methods were compared: polynomial, high-pass filter, and spline indexing. An optimal detrending was obtained through comparison with climate, but there seems to be no general rule for it. More reliable and longer climatic reconstructions are made possible. A response functions technique in three steps is presented: regression after extracting principal components on monthly climatic parameters, on seasonal parameters, and on more biological parameters such as potential evapotranspiration, multiple spectral regression introducing frequency domain. This procedure provides a more complete and more dynamic view of tree growth. The transfer function method and its verification are illustrated for different sites in Morocco: three climatic parameters in Tetouan (February, May, and June temperatures) and one in Marrakech (May temperature) have been successfully reconstructed. These reconstructions are confirmed by different verifications.
Keywords:
Dendrochronology; Tree Rings; Dendroclimatology
ISSN:
0041-2198
Additional Links:
http://www.treeringsociety.org

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleSome New Mathematical Procedures in Dendroclimatology, with Examples from Switzerland and Moroccoen_US
dc.contributor.authorGuiot, J.en_US
dc.contributor.authorBerger, A. L.en_US
dc.contributor.authorMunaut, A. V.en_US
dc.contributor.authorTill, Cl.en_US
dc.contributor.departmentInstitut d'Astronomie et de Géophysiqueen_US
dc.contributor.departmentLaboratoire de Palynologie et Phytosociologie, Université Catholique de Louvainen_US
dc.date.issued1982-
dc.rightsCopyright © Tree-Ring Society. All rights reserved.en_US
dc.description.collectioninformationThis item is part of the Tree-Ring Research (formerly Tree-Ring Bulletin) archive. It was digitized from a physical copy provided by the Laboratory of Tree-Ring research at The University of Arizona. For more information about this peer-reviewed scholarly journal, please email the Editor of Tree-Ring Research at editor@treeringsociety.org.en_US
dc.publisherTree-Ring Societyen_US
dc.identifier.journalTree-Ring Bulletinen_US
dc.identifier.citationGuiot, J., Berger, A.L., Munaut, A.V., Till, Cl. 1982. Some new mathematical procedures in dendroclimatology, with examples from Switzerland and Morocco. Tree-Ring Bulletin 42:33-48.en_US
dc.description.abstractAn original procedure and a new mathematical technique have been developed which allowed us to obtain more reliable climatic reconstructions than with prior methods. They have been tested for different sites in Switzerland and Morocco. First, cores that were too short and cores that were not coherent enough with others were excluded, using cross-spectral analysis. Second, detrending and master chronologies were calculated. Three methods were compared: polynomial, high-pass filter, and spline indexing. An optimal detrending was obtained through comparison with climate, but there seems to be no general rule for it. More reliable and longer climatic reconstructions are made possible. A response functions technique in three steps is presented: regression after extracting principal components on monthly climatic parameters, on seasonal parameters, and on more biological parameters such as potential evapotranspiration, multiple spectral regression introducing frequency domain. This procedure provides a more complete and more dynamic view of tree growth. The transfer function method and its verification are illustrated for different sites in Morocco: three climatic parameters in Tetouan (February, May, and June temperatures) and one in Marrakech (May temperature) have been successfully reconstructed. These reconstructions are confirmed by different verifications.en_US
dc.subjectDendrochronologyen_US
dc.subjectTree Ringsen_US
dc.subjectDendroclimatologyen_US
dc.identifier.citationGuiot, J., Berger, A.L., Munaut, A.V., Till, Cl. 1982. Some new mathematical procedures in dendroclimatology, with examples from Switzerland and Morocco. Tree-Ring Bulletin 42:33-48.en_US
dc.identifier.issn0041-2198-
dc.identifier.urihttp://hdl.handle.net/10150/261139-
dc.identifier.journalTree-Ring Bulletinen_US
dc.typeArticleen_US
dc.relation.urlhttp://www.treeringsociety.orgen_US
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