摘要
利用四川温江站日照计观测日照时数与其一级辐射站的直接辐射表观测日照时数资料,对二者观测结果的差异特性进行了分析。结果表明:日照时数各项目的日照计观测比直接辐射表观测值偏高。日合计值平均偏高0.22小时,月合计值平均偏高6.3小时,年合计值平均偏高78.8小时。两者观测日照时数月平均差值夏半年相对较大,冬半年相对较小,夏半年各月差值的离散情况大于冬半年。两者观测日照时数值线性相关显著。两种观测方式测得的日照时数有差异主要是由于观测原理、技术方式的不同引起,但操作不规范、设备安装不当、天气影响等因素也会导致观测结果的差异。
Analysed the difference of sunshine duration of Wenjiang station between the data came from Jordan sunshine recorder and radiation station＇ s pyrheliometer. The results showed that the data came from Jordan sunshine recorder was higher than the data came from the pyrheliometer. The day total value was on the high side for 0. 22 hours, the monthly total value was on the high side for 6. 3 hours, and the yearly total value was on the high side for 78.8 hours. The mean monthly difference was bigger in the summer half year than in the winter half year, and the discrete distribution of the difference between each month in summer half year was bigger than in the winter half year. The data shows a significant linear correlation. Because of the observation principle, improper installation and weather effect etc. there were differences of sunshine hours between the two observation methods.
出处
《高原山地气象研究》
2015年第4期81-84,共4页
Plateau and Mountain Meteorology Research
