2012-2019年千烟洲红壤丘陵综合开发试验站散射辐射数据集

A dataset of diffuse radiation in Qianyanzhou Ecological Research Station(2012-2019)

散射辐射是太阳辐射的重要组成成分,散射辐射中的光合有效部分是植物光合作用的主要驱动力,其动态变化对生态系统碳循环有重要影响。2012年在千烟洲红壤丘陵综合开发试验站的综合气象观测场内安装了SPN1辐射仪(Delta-T Devices Ltd,英国)进行散射辐射观测。对于缺失的散射辐射数据,首先利用同期的带有遮光环的CMP11辐射仪(Kipp&Zonen,荷兰)测得的散射辐射数据进行替换。若CMP11辐射仪的散射辐射数据也缺失,则利用已在千烟洲地区验证过的Reindl模型进行计算。本数据集精度为30分钟尺度,时间长度为2012–2019年。长期高时间分辨率的数据对于理解我国关键典型农业区域大气辐射特征及其时间变化特征有重要价值,同时也可作为大气、农业和生态所涉及时间尺度问题的重要辅助资料。

Diffuse radiation is one of the main components of solar radiation.The photosynthetically active radiation in it is the main driving force of plant photosynthesis,whose dynamic change has an important effect on ecosystem carbon cycle.In 2012,an SPN1 pyranometer(Delta-T Devices Ltd.,UK)was installed in the comprehensive meteorological observation field in Qianyanzhou Ecological Research Station to measure the diffuse radiation.For the missing diffuse radiation data,we replaced them with the data measured by the CMP11 pyranometer(Kipp&Zonen,Netherlands)attached with a shadow ring.If the diffuse radiation data of CMP11 pyranometer were also missing,we used the verified Reindl model in Qianyanzhou area for calculation.The accuracy of this dataset is on a 30-minute scale,and the time range is from 2012 to 2019.Long-term high temporal resolution data are valuable for understanding the characteristics of atmospheric radiation and its temporal variation in key typical agricultural regions in China.The dataset can also be used as important auxiliary data for the research on time scale issues involving atmosphere,agriculture and ecology.