Journal article

Reconciling Unevenly Sampled Paleoclimate Proxies: A Gaussian Kernel Correlation Multiproxy Reconstruction

JL Roberts, CR Tozer, M Ho, AS Kiem, TR Vance, LM Jong, FS McCormack, TD van Ommen

JOURNAL OF ENVIRONMENTAL INFORMATICS | INT SOC ENVIRON INFORM SCI | Published : 2020

Abstract

Reconstructing past hydroclimatic variability using climate-sensitive paleoclimate proxies provides context to our relatively short instrumental climate records and a baseline from which to assess the impacts of human-induced climate change. However, many approaches to reconstructing climate are limited in their ability to address sampling variability inherent in different climate proxies. We iteratively optimise an ensemble of possible reconstruction data series to maximise the Gaussian kernel correlation of Rehfeld et al. (2011) which reconciles differences in the temporal resolution of both the target variable and proxies or covariates. The reconstruction method is evaluated using synthet..

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University of Melbourne Researchers

Grants

Awarded by Australian Antarctic Division


Awarded by Australian Research Council's Special Research Initiative for Antarctic Gateway Partnership


Funding Acknowledgements

We thank Janece McDonald(Janece.McDonald@newcastle.edu.au) and Russell Drysdale (rnd@unimelb.edu.au) for input relating to the Wombeyan Cave speleothem. See Ho et al. (2015a) and Ho et al. (2015b) for further details. The Australian Antarctic Division provided funding and logistical support (ASAC 757 and 4061). This work was supported by the Australian Government's Cooperative Research Centres Program-me through the Antarctic Climate & Ecosystems Cooperative Research Centre (ACECRC). This research was supported under Australian Research Council's Special Research Initiative for Antarctic Gateway Partnership (SR140300001). The Centre for Water, Climate and Land (CWCL) at the University of Newcastle provided partial funding for C. R. Tozer's salary.