《Table 2 Seasonal contributions to air temperature changes in China for different periods》

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《中国气温变化对全球变暖停滞的响应（英文）》

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Some studies have shown that global surface temperatures have decreased in winter and increased in summer since 1998（Kosaka et al.，2013）.In the Northern Hemisphere，warming hiatus in winter was more pronounced than in summer（Kosaka et al.，2013；Trenberth et al.，2014）.In China，temperatures significantly decreased in winter during the warming hiatus（Figure 3）.The trend in winter was–0.826℃/10a for 1998–2012，which is lower than the long-term trend over 1960–2012 by 1.18℃/10a；winter accounts for 74.13%of the national cooling trend whereas spring and autumn had trends of–0.198℃/10a and–0.041℃/10a and corresponding contributions of 19.16%and 13.29%，respectively（Table 2）.In summer，the trend was 0.198℃/10a，which was slightly higher than that during 1960–2012，and higher than the warming acceleration period from 1960 to 1998 by 0.117℃/10a；the contribution to warming hiatus was–6.59%（Table 2）.Generally，of the seasons，the winter warming rate was fastest before 1998（Figure 3），but dropped sharply after 1998，and there was a big difference before and after 1998.In addition，in both the accelerated warming and warming hiatus periods，summer continued to warm at a relatively stable rate.After 2000，spring，summer，and autumn showed warming in all seasons except winter.