Improvement of Accuracy and Reliability of Monitoring Measurements of Sky Brightness on Small Angular Distances from the Sun SIMEL Photometer System

  • Ю.Я. Матющенко Altai State University (Barnaul, Russia) Email: matyuschenko@phys.asu.ru
  • В.В. Пашнев Altai State University (Barnaul, Russia) Email: pashnev@phys.asu.ru
DOI_disc_logo https://doi.org/10.14258/izvasu(2019)1-06
Keywords: global network AERONET, solar photometer CIMEL, almucantar of the Sun, small angular distances, positioning accuracy, model error of measurements

Abstract

Comparative characteristics of various modifications of CIMEL photometers related to errors in brightness measurements and positioning accuracy are considered. A statistical analysis was carried out for the presence of obvious errors in the data obtained by the new models of devices and displayed on the website of the AERONET project. Instrumental errors of monitoring observations in the almucantar of the Sun with small azimuths and criteria for selecting reliable angular distributions of brightness are described. A technique for reconstructing observational data is proposed, depending on the accuracy of the mechanical aiming of the photometer at small angles and the established model error of brightness measurements. Approbation of software implementing this method was carried out using AERONET data in recent years. The results of the study show a significant decrease in the number of errors caused by instrumental errors in the angular brightness distributions obtained by using new models of CIMEL photometers. The presented technique allows for a preliminary assessment of the quality of AERONET data with the aim of their subsequent use for building aerosol models of the atmosphere.

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Author Biographies

Ю.Я. Матющенко, Altai State University (Barnaul, Russia)

кандидат физико-математических наук, доцент, доцент кафедры вычислительной техники и электроники

В.В. Пашнев, Altai State University (Barnaul, Russia)

кандидат физико-математических наук, доцент, доцент кафедры вычислительной техники и электроники

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Published
2019-03-14
How to Cite
Матющенко Ю., Пашнев В. Improvement of Accuracy and Reliability of Monitoring Measurements of Sky Brightness on Small Angular Distances from the Sun SIMEL Photometer System // Izvestiya of Altai State University, 2019, № 1(105). P. 44-49 DOI: 10.14258/izvasu(2019)1-06. URL: http://izvestiya.asu.ru/article/view/%282019%291-06.
Issue
No 1(105) (2019): Izvestiya of Altai State University
Section
Физика

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