Quality Control and Correction Time of Radiation Measurements at Meteorological Stations
Abstract
This paper proposes a methodology for quality control of solar radiation measurements including checking the recording time. It is currently believed that data recorded in meteorological stations do not show deviations because of the very advanced dataloggers used. However, many of the incidents in meteorological stations are caused by time delays. Thus, this paper proposes checking recording time as a necessary first step for quality control of solar radiation data, previous to the usual visual and BSRN checks. A method has been developed to detect and correct time errors automatically. This correction decreases the percentage of daily data that fail the BSRN checks, and the data accepted are for the right time for hourly analysis.