我国地面辐射基准站观测数据完整性和合理性检查评价

Examination and Evaluation of Integrality and Rationality of China Basic Radiation Station Data

利用BSRN推荐方法,对2007年6月—2010年12月内蒙古锡林浩特地面基准辐射站的辐射数据质量进行了检查,并对异常情况进行了分析。结果表明,锡林浩特基准辐射观测数据完整性较好,分钟数据缺测率最大为0.012%,满足缺测率低于2%的业务要求。质检结果表明,锡林浩特基准辐射观测数据总体质量良好,但数据异常季节性特征显著,总辐射在冬季超出极端罕见上限值的情况较多,直接辐射易在夏季超出极端罕见上限值;除去太阳跟踪器故障期间的数据,散射辐射超出极端罕见上限的情况也有出现;反射辐射则在冬季会偶尔超出极端罕见上限。总辐射、直接辐射和散射辐射易在夏季出现超出物理可能和极端罕见下限的情况,说明这些仪器在夏季较易出现零点的漂移。

Using the BRSN method,the radiation data qualily at the basic radiation station in XiliHotte was examined and it abnormal situation was analyzed.The results show that the data has integrality,miss value for minute data is only 0.012%,meet operation criterion.The data quality is good,accord with BSRN rule,but it has distinct seasonal feature,gloable radiation often exceed its maximum value in winter,direct radiation is easer exceed its maximum value in summer,diffuse radiation sporadic occur this phenomena.The three data likely exceed minimum physics value and its extreme in summer,which show the instrument appear zero shift in summer.The methods used in this paper is effective to check data quality,the error causation can been found by referring weather condition and its relationship itself.But some parameter should been modified according to local climate condition,which was adapt to American entironment.