期刊
CLIMATIC CHANGE
卷 99, 期 1-2, 页码 81-91出版社
SPRINGER
DOI: 10.1007/s10584-009-9669-0
关键词
-
资金
- National Key Program for Developing Basic Science [2006CB400506]
- National Natural Science Foundation of China [40231006]
The climatic seasons in China, defined by station-specific daily temperature measures, have changed substantially during the past decades. In the majority of the country, the length of summer has extended and the length of winter has shortened since the 1950s. These changes in the lengths of seasons are linked to the changes in the starting dates of seasons. Namely, the starting date of summer has advanced and the starting date of winter has shifted back. Averaged across the whole country, the starting date of summer has been brought forward by 5.8 days and the season has extended 9 days. On the other hand, the starting date of winter has been delayed by 5.6 days and the season has shortened by 11 days. The changes for spring and fall are relatively smaller. Particularly, spring has started earlier by 5.7 days but shortened by 0.3 day, and fall has started later by 3.2 days but lengthened by 2.3 days. The changes in seasons exhibit apparent regional differences. They are more significant in the north than in the south where the trend of some local changes in seasons is opposite to that of the rest of the country.
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