Supporting Information

Files in this Data Supplement:

Fig. 6. District map of China’s 31 provinces and municipalities (source: http://china.scmp.com/map).

Fig. 7. Location and topography of Chinese meteorological station network.

Fig. 8. Total number of main discontinuities for each station during the period of 1951– 2001 (2).

Fig. 9. Differences in annual mean temperature trends before and after the homogeneity adjustments during the period of 1951–2001 (2).

Fig. 10. Correlation coefficients between observed and R-2 monthly temperature anomalies for maximum (a) and minimum (b) during the period 1979–1998. The total sample is 240 for each station.

Fig. 11. Histograms of correlation coefficients between observed and R-2 temperature anomalies for maximum (a) and minimum (b) in winter, spring, summer, and autumn over our study region during the period 1979–1998. The total sample is 20 for each station.

Fig. 12. Observed minus R-2 spring temperature trends (in °C per decade) in southeast China during the period of 1979–1998: maximum (a), minimum (b), and DTR (c).

Fig. 13. Observed minus R-2 summer temperature trends (in °C per decade) in southeast China during the period of 1979–1998: maximum (a), minimum (b), and DTR (c).

Fig. 14. Observed minus R-2 autumn temperature trends (in °C per decade) in southeast China during the period of 1979–1998: maximum (a), minimum (b), and DTR (c).

Fig. 15. Observed minus R-2 annual mean temperature trends (in °C per decade) in southeast China during the period of 1979–1998: maximum (a), minimum (b), and DTR (c).