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Surface air temperature changes from 1909 to 2008 in Southeast Asia assessed by factor analysis

Abstract

Monthly seasonally adjusted surface temperature patterns in Southeast Asia from 1909 to 2008 were studied. The area comprised 40 regions of 10° × 10° grid boxes in latitudes 25°S to 25°N and longitudes 75°E to 160°E. Temperatures were studied for three overlapping 36-year periods, the first period 1909–1944, the second period 1941–1976 and the third period 1973–2008. The data of each 36-year period were fitted to reduce autocorrelations at lags 1 and 2 months. Factor analysis was used to account for spatial correlation between grid boxes giving six contiguous layer regions. Simple linear regression models were fitted to data within these larger regions. Temperatures were found to have increased in five from six regions over the first period with the increases ranging from 0.005 to 0.148 °C per decade, in only three regions over the second period with the increases ranging from 0.008 to 0.150 °C per decade and in six regions over the third period with the increases ranging from 0.082 to 0.222 °C per decade.

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Acknowledgements

The authors are grateful to Don McNeil, Macquarie University, Australia, for supervising our research and Graham Wood, the University of Warwick, UK, for his helpful suggestions.

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Correspondence to Suree Chooprateep.

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Chooprateep, S., McNeil, N. Surface air temperature changes from 1909 to 2008 in Southeast Asia assessed by factor analysis. Theor Appl Climatol 123, 361–368 (2016). https://doi.org/10.1007/s00704-014-1324-7

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  • DOI: https://doi.org/10.1007/s00704-014-1324-7

Keywords

  • Detrended Fluctuation Analysis
  • Western Pacific Ocean
  • Surface Temperature Change
  • Average Surface Temperature
  • Simple Linear Regression Model