No Cover Image

Journal article 540 views

A critical evaluation of multi-proxy dendroclimatology in northern Finland / Danny McCarroll; Mervi Tuovinen; Rochelle Campbell; Mary Gagen; Håkan Grudd; Risto Jalkanen; Neil J Loader; Iain Robertson

Journal of Quaternary Science, Volume: 26, Issue: 1, Start page: 7

Swansea University Authors: Danny, McCarroll, Mary, Gagen, Iain, Robertson

Full text not available from this repository: check for access using links below.

Check full text

DOI (Published version): 10.1002/jqs.1408

Abstract

Twentieth-century summer (July-August) temperatures in northern Finland are reconstructed using ring widths, maximum density and stable carbon isotope ratios (delta(13)C) of Scots pine tree rings, and using combinations of these proxies. Verification is based on the coefficient of determination (r(2...

Full description

Published in: Journal of Quaternary Science
ISSN: 0267-8179
Published: 2011
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa1009
Tags: Add Tag
No Tags, Be the first to tag this record!
Abstract: Twentieth-century summer (July-August) temperatures in northern Finland are reconstructed using ring widths, maximum density and stable carbon isotope ratios (delta(13)C) of Scots pine tree rings, and using combinations of these proxies. Verification is based on the coefficient of determination (r(2)), reduction of error (RE) and coefficient of efficiency (CE) statistics. Of the individual proxies, delta(13)C performs best, followed by maximum density. Combining delta(13)C and maximum density strengthens the climate signal but adding ring widths leads to little improvement. Blue intensity, an inexpensive alternative to X-ray densitometry, is shown to perform similarly. Multi-proxy reconstruction of summer temperatures from a single site produces strong correlations with gridded climate data over most of northern Fennoscandia. Since relatively few trees are required (<15) the approach could be applied to long sub-fossil chronologies where replication may be episodically low.
College: College of Science
Issue: 1
Start Page: 7