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
Ellsworth G. Dutton discovered a calibration glitch in the SWD "Short-wave downward (GLOBAL) radiation" data for Barrow, Alaska. SWD data was therefore removed from this...
The solar tracker is out of order since 2020-01-01. Therefore, direct and diffuse radiation are not included in the file, and downward longwave radiation is measured without...