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Journal of Mountain Science

, Volume 15, Issue 2, pp 444–446 | Cite as

Comment on Malanson (2017) “Mixed signals in trends of variance in high-elevation tree ring chronologies” published in Journal of Mountain Science

  • Anthony Fowler
Commentary
  • 24 Downloads

Abstract

In a recent paper published in Journal of Mountain Science, Malanson (2017) explored variance changes in Rocky Mountains tree-ring chronologies. This commentary points out some methodological issues related to systematic bias in evolving tree-ring chronology variance and suggests that analyzing the slopes of linear regression lines may be suboptimal for identifying temporal changes in variance. The journal editor invited the original article’s authors Dr. Malandson to respond to the comments. Thus Dr. Malandson’s response is attached behind the comments.

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References

  1. Cook ER, Peters K (1997) Calculating unbiased tree-ring indices for the study of climatic and environmental change. The Holocene 7: 359–368.https://doi.org/10.1177/095968369700700314CrossRefGoogle Scholar
  2. Fowler AM (2009) Variance stabilization revisited: a case for analysis based on data pooling. Tree-Ring Research 65: 129–145. https://doi.org/10.3959/2008-7.1CrossRefGoogle Scholar
  3. Fowler AM, Boswijk G, Lorrey A, et al. (2012) Multi-centennial treering record of ENSO-related activity in New Zealand. Nature Climate Change 2 172–176. https://doi.org/10.1038/nclimate 1374Google Scholar
  4. Fritts HC (1976) Tree Rings and Climate. Academic Press, London.Google Scholar
  5. Fowler A (2018) Comment on Malanson (2017) “Mixed signals in trends of variance in high-elevation tree ring chronologies” published in Journal of Mountain Science. Journal of Mountain Science 15(2). https://doi.org/10.1007/s11629-017-4776-2Google Scholar
  6. Osborn TJ, Briffa KR, Jones PD (1997) Adjusting variance for sample-size in tree ring chronologies and other regional mean timeseries. Dendrochronologia 15: 89–99. https://ueaeprints. uea.ac.uk/id/eprint/33968Google Scholar
  7. Malanson GP (2017) Mixed signals in trends of variance in highelevation tree ring chronologies. Journal of Mountain Science 14: 1961–1968. https://doi.org/10.1007/s11629-017-4425-9CrossRefGoogle Scholar
  8. Paul A, Bhowmik R, Chowdary VM, et al. (2017) Trend analysis of time series rainfall data using robust statistics. Journal of Water and Climate Change 8: 691–700. https://doi.org/10.2166/wcc.2017.141CrossRefGoogle Scholar

Copyright information

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of EnvironmentUniversity of AucklandAucklandNew Zealand

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