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A spatiotemporal analysis of U.S. station temperature trends over the last century

Capparelli, V.; Franzke, C.; Vecchio, A.; Freeman, M. P.; Watkins, N. W. and Carbone, V. (2013). A spatiotemporal analysis of U.S. station temperature trends over the last century. Journal of Geophysical Research: Atmospheres, 118(14) pp. 7427–7434.

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This study presents a nonlinear spatiotemporal analysis of 1167 station temperature records from the United States Historical Climatology Network covering the period from 1898 through 2008. We use the empirical mode decomposition method to extract the generally nonlinear trends of each station. The statistical significance of each trend is assessed against three null models of the background climate variability, represented by stochastic processes of increasing temporal correlation length. We find strong evidence that more than 50% of all stations experienced a significant trend over the last century with
respect to all three null models. A spatiotemporal analysis reveals a significant cooling trend in the South-East and significant warming trends in the rest of the contiguous U.S. It also shows that the warming trend appears to have migrated equatorward. This shows the complex spatiotemporal evolution of climate change at local scales.

Item Type: Journal Item
Copyright Holders: 2013 The Authors
ISSN: 2169-897X
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetNot SetNatural Environment Research Council
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 45237
Depositing User: Nicholas Watkins
Date Deposited: 04 Feb 2016 14:58
Last Modified: 13 Sep 2018 18:32
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