Surface air temperature changes from 1909 to 2008 in Southeast Asia assessed by factor analysis
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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.
KeywordsDetrended Fluctuation Analysis Western Pacific Ocean Surface Temperature Change Average Surface Temperature Simple Linear Regression Model
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.
- Chatfield C (1996) The analysis of time series. Chapman & Hall, LondonGoogle Scholar
- Chooprateep S, McNeil N (2014) Temperature changes in Southeast Asia: 1973–2008. Chiang Mai Univ J Nat Sci 13:105–116Google Scholar
- CRU (2009) Climatic Research Unit, http://www.cru.uea.ac.uk/cru/data/temperature. Downloaded 1 April 2010
- Cruz RV, Harasawa H, Lal M, Wu S, Anokhin Y, Punsalmaa B, Honda Y, Jafari M, Li C, Ninh NH (2007) Climate change 2007: The scientific basis contribution of working group II to the fourth assessment report of the intergovernmental panel on climate change. Cambridge University Press, CambridgeGoogle Scholar
- Hair JF, Black WC, Babin BJ, Anderson RE (2009) Multivariate data analysis. Prentice Hall, USAGoogle Scholar
- Houghton JT, Ding Y, Griggs DJ, Noguer M, Linden PJ, Dai X, Maskell K, Johnson CA (eds) (2001) Climate change 2001: the scientific basis: contribution of working group 1 to the third assessment report of the intergovernmental panel on climate change. Cambridge University Press, New YorkGoogle Scholar
- Preston BL, Suppiah R, Macadam I, Bathols J (2006) Climate change in the Asia Pacific region. Commonwealth Scientific and Industrial Research. Organisation, AustraliaGoogle Scholar
- R Development Core Team (2009) R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna http://www.R-project.org. Downloaded 1 November 2009
- Solomon S, Qin D, Manning M, Chen Z, Marquis M, Averyt KB, Tignor M, Miller HL (eds) (2007) Climate change 2007: the physical science basis: contribution of working group I to the fourth assessment report of the intergovernmental panel on climate change. Cambridge University Press, New YorkGoogle Scholar