Basic and other measurements of radiation at station Gobabeb (2014-03)@en

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.在纳米比亚戈巴布观测站，下行短波辐射（Shortwave Downward Radiation, SWD）、下行长波辐射（Longwave Downward Radiation, LWD）与直接太阳辐射（Direct Solar Radiation, DIR）均采用两台同型号仪器开展冗余测量，该两台仪器未纳入本数据库。两台仪器的测量差值将用于质量控制流程，该流程通过人工检视两台仪器的半日尺度日变化曲线及其差值曲线完成。由于每日晨间的例行仪器清洁操作，多数晨间的测量值会被剔除。导致测量差值偏大的其他原因包括站点附近的鸟类、昆虫或人员活动。该区域常年存在规律的雾天事件，其发生频率随季节变化。雾通常于下半夜生成，并在日出数小时后消散。长波辐射计（pyrgeometer）的机壳温度几乎不会低于露点，但仪器的观测穹顶可能会出现水汽凝结。