St Andrews Research Repository

St Andrews University Home
View Item 
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  • Login
JavaScript is disabled for your browser. Some features of this site may not work without it.

Improved dendroclimatic calibration using blue intensity in the southern Yukon

Thumbnail
View/Open
Wilson_2019_Holocene_blueintensity_AAM.pdf (2.976Mb)
Date
23/07/2019
Author
Wilson, R.
Anchukaitis, K
Andreu-Hayles, L
Cook, E
D’Arrigo, R
Davi, N
Haberbauer, L
Krusic, P
Luckman, B
Morimoto, D
Oelkers, R
Wiles, G
Wood, C.
Keywords
Age-dependent spline
Blue intensity
Summer temperature reconstruction
Tree ring
White spruce
Yukon
GE Environmental Sciences
GB Physical geography
NDAS
Metadata
Show full item record
Altmetrics Handle Statistics
Altmetrics DOI Statistics
Abstract
In north-western North America, the so-called divergence problem (DP) is expressed in tree ring width (RW) as an unstable temperature signal in recent decades. Maximum latewood density (MXD), from the same region, shows minimal evidence of DP. While MXD is a superior proxy for summer temperatures, there are very few long MXD records from North America. Latewood blue intensity (LWB) measures similar wood properties as MXD, expresses a similar climate response, is much cheaper to generate and thereby could provide the means to profoundly expand the extant network of temperature sensitive tree-ring (TR) chronologies in North America. In this study, LWB is measured from 17 white spruce sites (Picea glauca) in south-western Yukon to test whether LWB is immune to the temporal calibration instabilities observed in RW. A number of detrending methodologies are examined. The strongest calibration results for both RW and LWB are consistently returned using age-dependent spline (ADS) detrending within the signal-free (SF) framework. RW data calibrate best with June–July maximum temperatures (Tmax), explaining up to 28% variance, but all models fail validation and residual analysis. In comparison, LWB calibrates strongly (explaining 43–51% of May–August Tmax) and validates well. The reconstruction extends to 1337 CE, but uncertainties increase substantially before the early 17th century because of low replication. RW-, MXD- and LWB-based summer temperature reconstructions from the Gulf of Alaska, the Wrangell Mountains and Northern Alaska display good agreement at multi-decadal and higher frequencies, but the Yukon LWB reconstruction appears potentially limited in its expression of centennial-scale variation. While LWB improves dendroclimatic calibration, future work must focus on suitably preserved sub-fossil material to increase replication prior to 1650 CE.
Citation
Wilson , R , Anchukaitis , K , Andreu-Hayles , L , Cook , E , D’Arrigo , R , Davi , N , Haberbauer , L , Krusic , P , Luckman , B , Morimoto , D , Oelkers , R , Wiles , G & Wood , C 2019 , ' Improved dendroclimatic calibration using blue intensity in the southern Yukon ' , The Holocene , vol. Online First . https://doi.org/10.1177/0959683619862037
Publication
The Holocene
Status
Peer reviewed
DOI
https://doi.org/10.1177/0959683619862037
ISSN
0959-6836
Type
Journal article
Rights
Copyright © The Author(s) 2019,SAGE Publications. This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1177/0959683619862037
Description
This work was funded by the US National Science Foundation (NSF) Grants AGS 1159430, AGS 1502186, AGS 1502150, PLR 15-04134, PIRE 1743738, AGS-15-167 and PLR16-03473.
Collections
  • University of St Andrews Research
URI
http://hdl.handle.net/10023/18152

Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

Advanced Search

Browse

All of RepositoryCommunities & CollectionsBy Issue DateNamesTitlesSubjectsClassificationTypeFunderThis CollectionBy Issue DateNamesTitlesSubjectsClassificationTypeFunder

My Account

Login

Open Access

To find out how you can benefit from open access to research, see our library web pages and Open Access blog. For open access help contact: openaccess@st-andrews.ac.uk.

Accessibility

Read our Accessibility statement.

How to submit research papers

The full text of research papers can be submitted to the repository via Pure, the University's research information system. For help see our guide: How to deposit in Pure.

Electronic thesis deposit

Help with deposit.

Repository help

For repository help contact: Digital-Repository@st-andrews.ac.uk.

Give Feedback

Cookie policy

This site may use cookies. Please see Terms and Conditions.

Usage statistics

COUNTER-compliant statistics on downloads from the repository are available from the IRUS-UK Service. Contact us for information.

© University of St Andrews Library

University of St Andrews is a charity registered in Scotland, No SC013532.

  • Facebook
  • Twitter