Spatiotemporal analysis of temperature-variation patterns under climate change in the upper reach of Mekong River basin

The Science of the Total Environment
Feifei WuChunhui Li

Abstract

Occurrence of temperature anomaly has greatly affected natural cycles of water resources in Lancang River basin in China, which is the upper reach of Mekong River. An integrated spatiotemporal decomposition and analysis method was proposed for the identification of temperature-variation patterns under changing climatic conditions in the basin. This method was based on the combination of S-mode empirical orthogonal function analysis, IDW interpolation, liner regression, weighted moving average and Mann Kendall methods. Results indicated that the first two modes extracted nearly 80% of spatiotemporal variations in temperature. Temperature in the whole basin followed the same variation trend through the first mode analysis. Sensitive areas were mainly located in the southwest of the basin, which occupied nearly half of the basin. The associated time series presented that the basin appeared transition from cold periods to warm periods. Temperature increased significantly over the period of 1960 to 2009 at annual and seasonal scales, particularly over 1990s. At the same time, the most significant rising occurred in winter and the least in summer. In the second mode, a west-east inverse phase pattern of temperature variations was a d...Continue Reading

References

Nov 22, 2000·The Science of the Total Environment·P J Hanson, J F Weltzin
Jan 24, 2008·Proceedings. Biological Sciences·Marcel E Visser
Jan 31, 2009·Proceedings of the National Academy of Sciences of the United States of America·Susan SolomonPierre Friedlingstein
Feb 9, 2010·The Science of the Total Environment·Pierre SicardPatrick Malléa
Jul 14, 2010·The Science of the Total Environment·Bruce DenbyJan Horálek

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