Comment: On the need for validation of the Jones et al. temperature trends with respect to urban warming
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- Wood, F.B. Climatic Change (1988) 12: 297. doi:10.1007/BF00139434
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The Jones et al. hemispheric and global temperature trends and the methodology used to detect and correct for urban heat island effects are examined in detail. The results of this review suggest that there is still the possibility of significant urban warming bias remaining in the hemispheric and global averages. The actual extent of any such bias is unknown but warrants full investigation, since undetected and/or uncorrected urban warming could account for some of the hemispheric and global warming reported by Jones et al. Several research activities are suggested for resolving this uncertainty, including the rigorous application of urban warming correction factors to the data set used by Jones et al. and the development of geographically representative rural temperature series.