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| 近30年来沧州地区日照时数与风速变化特征 | |
| 引用本文： | 龚宇,邢开成,王璞.近30年来沧州地区日照时数与风速变化特征[J].中国农业气象,2007,28(3):263-267. |
| 作者姓名： | 龚宇 邢开成 王璞 |
| 作者单位： | 1. 唐山市气象局,唐山,063000;中国农业大学农学系 2. 沧州市气象局 3. 唐山市气象局,唐山,063000 |
| 摘 要： | 采用常规统计分析方法和小波分析方法对1971-2000年沧州地区6个站点逐日平均风速和日照时数资料进行分析。结果显示:历年的年日照时数没有明显变化趋势,但以3 a和6 a为周期振动的现象比较明显,不同季节日照时数变化也不明显;平均风速呈明显下降趋势,下降速率为0.04m s-1a-1,1994年是平均风速下降的突变年份,历年不同季节平均风速也呈明显下降趋势。研究结果对估算当地作物耗水量和指导灌溉具有参考价值。 |
| 关 键 词： | 沧州 日照时数 风速 特征 |
| 修稿时间： | 2006-09-15 |
Characteristics of Changes on Sunshine Hours and Wind Speed in Last 30 Years in Cangzhou |
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| GONG Yu,XING Kai-cheng,WANG Pu.Characteristics of Changes on Sunshine Hours and Wind Speed in Last 30 Years in Cangzhou[J].Chinese Journal of Agrometeorology,2007,28(3):263-267. | |
| Authors: | GONG Yu XING Kai-cheng WANG Pu |
| Institution: | 1. Meteorological Bureau of Tangshan City,Tangshan 063000,China; 2. Meteorological Bureau of Cangzhou City 3. College of Agronomy and Biotechnology, China Agricuhure University |
| Abstract: | Based on the meteorological data from 1971 to 2000 in six stations in Cangzhou areas,the daily average wind speed and sunshine hours were analyzed by using statistical analysis and wavelet analytical methods.The results showed that the change of sunshine hours was not obviously for different years,but there was a vibration cycle in three and six years.The average wind speed showed a significant decline trend.The annual decline rate of the wind speed was by 0.04 m/s.The mutation of the average wind speed occurred in 1994.The average wind speed showed a decline trend in the different seasons. |
| Keywords: | Cangzhou Sunshine hours Wind speed Characteristic |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |