Improved quality control protocols on solar radiation measurements

Daniel Astudillo, Dunia Bachour, Luis Martin-Pomares

Research output: Contribution to journalArticle

2 Citations (Scopus)


This article presents a proposed set of comprehensive quality control tests on solar radiation measurements (global horizontal, direct normal and diffuse horizontal components) that allow for the automated identification of incorrect measurements. The proposed set is a combination of existing tests from different sources, chosen, and some adapted, to identify most problems in the collected data at one-minute temporal resolution, and are applied here to values measured with high-precision stations at two different sites, to derive quality flags for each entry in order to assess whether these tests are able to identify problems in the measured data, i.e., to point out data of dubious quality. The results show that this set of tests is able to spot issues which may be otherwise unidentified by the widely used BSRN set of tests, impacting calculated yearly-averaged irradiances by sometimes small, but not negligible, amounts, of as much as 4% even in a well-maintained station.

Original languageEnglish
Pages (from-to)425-433
Number of pages9
JournalSolar Energy
Publication statusPublished - 15 Jul 2018



  • Quality control
  • Solar measurements

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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