Change of parameters of BCC/RCG-WG for daily non-precipitation variables in China： 1951-1978 and 1979-2007

• Published in: Journal of geographical sciences Vol. 23; no. 4; pp. 579 - 594
• Main Author: 廖要明
• Format: Journal Article
• Language: English
• Published: Heidelberg SP Science Press 01.08.2013; Springer Nature B.V
• Subjects: Asia; BCC; Bgi / Prodig; China; Climate change; Climate studies; Earth and Environmental Science; Environmental impact; Geographical Information Systems/Cartography; Geography; Nature Conservation; Parameter estimation; Physical Geography; Precipitation; Remote Sensing/Photogrammetry; Variables; 中国; 参数估计; 天气发生器; 工作组; 时间相关性; 气候变化; 水变; China; daily non-precipitation variables; BCC/RCG-WG weather generator; parameters; China; climate change; Climate; Temperature; Climatic change; Climatic data; Interannual variability; Seasonal cycle; Solar radiation
• ISSN: 1009-637X; 1861-9568
• DOI: 10.1007/s11442-013-1030-x

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.