Basic and other measurements of radiation at station Gobabeb (2015-05)

In Gobabeb, Namibia SWD, LWD and DIR are each measured redundant with two instruments of the same make (not in this data base). The differences between the pairs are used in the quality control. This is done manually by inspecting plots of half-day diurnal courses of the pairs and their differences. Values are removed mostly in the morning due to daily cleaning. Other reasons for larger differences are birds, insects, or people at the station. There are regular fog events varying in frequency over the year. Usually, the fog appears in the second half of the night and disappears a few hours after sunrise. The case temperatures of pyrgeometers practically never drop below dewpoint but there can be water deposition of the dome.

在纳米比亚戈巴比斯地区，SWD、LWD与DIR三个观测要素均采用两台同型号仪器开展冗余观测（该类仪器未纳入本数据库）。仪器配对的观测差值将用于质量控制流程，具体通过人工检视两组仪器及其差值的半日昼夜变化曲线完成。由于每日晨间的仪器清洁操作，多数异常值会在清晨时段被剔除。导致观测差值偏大的其他原因包括站点周边的鸟类、昆虫活动或人员到访。该区域全年雾日发生频率存在季节变化，大雾通常于下半夜生成，并于日出数小时后消散。长波辐射计（pyrgeometer）的外壳温度几乎从未低于露点，但仪器的感应穹顶仍可能出现水汽凝结。