Change of parameters of BCC/RCG-WG for daily non-precipitation variables in China: 1951–1978 and 1979–2007 |
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引用本文: | 廖要明.Change of parameters of BCC/RCG-WG for daily non-precipitation variables in China: 1951–1978 and 1979–2007[J].地理学报(英文版),2013,23(4):579-594. |
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作者姓名: | 廖要明 |
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基金项目: | The Special Scientific Research Fund of Meteorological Public Welfare Profession of China,No.GYHY201106018; The Swedish Foundation for International Cooperation in Research and High Education |
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摘 要: | Parameters of weather generator BCC/RCG-WG for daily non-precipitation variables including maximum temperature, minimum temperature and sunshine hours at 669 stations in China are estimated using history daily records from 1951 to 1978 and from 1979 to 2007 respectively. The changes in the parameters for the two periods are revealed to explore the impact of climate change on these parameters. The results show that the parameters of the non-precipitation variables have experienced different changes. While the annual means and the amplitudes of the seasonal cycle show a clear change, the interannual variability, the timings of the seasonal cycles, and the temporal correlations for each variable remain practically unchanged. This indicates that climate changes in China over the last 57 years are mainly reflected in variations in the means and in the strength of the seasonal cycles. The changed parameters have implications for the stationary assumption implied in the parameter estimation and use of the weather generator for climate change studies.
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关 键 词: | BCC 中国 水变 工作组 天气发生器 气候变化 参数估计 时间相关性 |
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