Using a Simulation Model to Compare Methods of Tree-Ring Detrending and to Investigate the Detectability of Low-Frequency Signals

Persistent Link:
http://hdl.handle.net/10150/262635
Title:
Using a Simulation Model to Compare Methods of Tree-Ring Detrending and to Investigate the Detectability of Low-Frequency Signals
Author:
Bunn, Andrew G.; Sharac, Timothy J.; Graumlich, Lisa J.
Affiliation:
The Big Sky Institute, Montana State University, Bozeman, MT
Citation:
Bunn, A.G., Sharac, T.J., Graumlich, L.J. 2004. Using a simulation model to compare methods of tree-ring detrending and to investigate the detectability of low-frequency signals. Tree-Ring Research 60(2):77-90.
Publisher:
Tree-Ring Society
Journal:
Tree-Ring Research
Issue Date:
2004
URI:
http://hdl.handle.net/10150/262635
Additional Links:
http://www.treeringsociety.org
Abstract:
We use a simulation model to generate tree-ring like data with systematic growth forcings and subject it to two methods of standardization: Regional Curve Standardization (RCS) and Negative Exponential Curve Standardization (NECS). The coherency between very low frequency forcings (hundreds of years) and the chronologies was higher when RCS was used to detrend the component series. There was no difference between standardization methods at decadal or annual time scales. We found that the detectability of systematic forcings was heavily dependent on amplitude and wavelength of the input signal as well as the number of trees simulated. These results imply that for very long tree-ring chronologies where the analyst is interested in low-frequency variability, RCS is a better method for detrending series if the requirements for that method can be met. However, in the majority of situations NECS is an acceptable detrending method. Most critically, we found that multi-centennial signals can be recovered using both methods.
Type:
Article
Language:
en_US
Keywords:
Dendrochronology; Tree Rings; Dendroclimatology; Regional Curve Standardization; Simulation Modeling; Low-Frequency Variation; Detrending
ISSN:
2162-4585; 1536-1098

Full metadata record

DC FieldValue Language
dc.contributor.authorBunn, Andrew G.en_US
dc.contributor.authorSharac, Timothy J.en_US
dc.contributor.authorGraumlich, Lisa J.en_US
dc.date.accessioned2012-12-13T23:37:02Z-
dc.date.available2012-12-13T23:37:02Z-
dc.date.issued2004-
dc.identifier.citationBunn, A.G., Sharac, T.J., Graumlich, L.J. 2004. Using a simulation model to compare methods of tree-ring detrending and to investigate the detectability of low-frequency signals. Tree-Ring Research 60(2):77-90.en_US
dc.identifier.issn2162-4585-
dc.identifier.issn1536-1098-
dc.identifier.urihttp://hdl.handle.net/10150/262635-
dc.description.abstractWe use a simulation model to generate tree-ring like data with systematic growth forcings and subject it to two methods of standardization: Regional Curve Standardization (RCS) and Negative Exponential Curve Standardization (NECS). The coherency between very low frequency forcings (hundreds of years) and the chronologies was higher when RCS was used to detrend the component series. There was no difference between standardization methods at decadal or annual time scales. We found that the detectability of systematic forcings was heavily dependent on amplitude and wavelength of the input signal as well as the number of trees simulated. These results imply that for very long tree-ring chronologies where the analyst is interested in low-frequency variability, RCS is a better method for detrending series if the requirements for that method can be met. However, in the majority of situations NECS is an acceptable detrending method. Most critically, we found that multi-centennial signals can be recovered using both methods.en_US
dc.language.isoen_USen_US
dc.publisherTree-Ring Societyen_US
dc.relation.urlhttp://www.treeringsociety.orgen_US
dc.rightsCopyright © Tree-Ring Society. All rights reserved.en_US
dc.subjectDendrochronologyen_US
dc.subjectTree Ringsen_US
dc.subjectDendroclimatologyen_US
dc.subjectRegional Curve Standardizationen_US
dc.subjectSimulation Modelingen_US
dc.subjectLow-Frequency Variationen_US
dc.subjectDetrendingen_US
dc.titleUsing a Simulation Model to Compare Methods of Tree-Ring Detrending and to Investigate the Detectability of Low-Frequency Signalsen_US
dc.typeArticleen_US
dc.contributor.departmentThe Big Sky Institute, Montana State University, Bozeman, MTen_US
dc.identifier.journalTree-Ring Researchen_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
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