Quality control of solar radiation data: Present status and proposed new approaches

Younes, S.; Claywell, Randall; Muneer, Tariq

doi:10.1016/j.energy.2004.04.031

Cited by 149 publications

(98 citation statements)

References 14 publications

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“…Systematic errors due to the instruments themselves exist (e.g. Muneer and Fairooz, 2002;Younes et al, 2005), but the most important ones are usually random and due to operational causes such as maintenance and instrument reading. Therefore, one of the major concerns of operational radiometric networks is to perform a rigorous quality control (QC) on the measurements (e.g.…”

Section: Introductionmentioning

confidence: 99%

A database of multi-year (2004–2010) quality-assured surface solar hourly irradiation measurements for the Egyptian territory

Korany¹,

Boraiy

Eissa

et al. 2016

Earth Syst. Sci. Data

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Abstract.A database containing the global and diffuse components of the surface solar hourly irradiation measured from 1 January 2004 to 31 December 2010 at eight stations of the Egyptian Meteorological Authority is presented. For three of these sites (Cairo, Aswan and El-Farafra), the direct component is also available. In addition, a series of meteorological variables including surface pressure, relative humidity, temperature, wind speed and direction is provided at the same hourly resolution at all stations. The details of the experimental sites and instruments used for the acquisition are given. Special attention is paid to the quality of the data and the procedure applied to flag suspicious or erroneous measurements is described in detail. Between 88 and 99 % of the daytime measurements are validated by this quality control. Except at Barrani where the number is lower (13 500), between 20 000 and 29 000 measurements of global and diffuse hourly irradiation are available at all sites for the 7-year period. Similarly, from 9000 to 13 000 measurements of direct hourly irradiation values are provided for the three sites where this component is measured. With its high temporal resolution this consistent irradiation and meteorological database constitutes a reliable source to estimate the potential of solar energy in Egypt. It is also adapted to the study of high-frequency atmospheric processes such as the impact of aerosols on atmospheric radiative transfer. It is planned to update regularly the current 2004-2010 database, which has been placed on the PANGAEA repository (doi:10.1594/PANGAEA.848804) and contains the individual meteorological and irradiation data files of the eight stations.

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Section: Introductionmentioning

confidence: 99%

A database of multi-year (2004–2010) quality-assured surface solar hourly irradiation measurements for the Egyptian territory

Korany¹,

Boraiy

Eissa

et al. 2016

Earth Syst. Sci. Data

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“…Diffuse radiation values The data considered are comprised within the envelope delimitated by the two curves obtained by interpolation, given in the following equation, see Figure 1: The concept used in step 5 of Table II to filter the data for the diffuse radiation values is introduced by Claywell et al 60 and adopted by Bortolini et al 32 …”

Section: Data Filtering Proceduresmentioning

confidence: 99%

Monthly average daily global and diffuse solar radiation based on sunshine duration and clearness index for Brasov, Romania

Cotfas

Kaplani³

et al. 2014

Journal of Renewable and Sustainable Energy

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The main objective of this study is to develop single location appropriate models for the estimation of the monthly average daily global and diffuse horizontal solar radiation for Brasov, Romania. The study focuses particularly on models based on the sunshine duration and clearness index. The data used for the calibration of the models were collected during a period of 4 yr, between November 2008 and October 2012, at the Transilvania University of Brasov. The testing and validation of the models was carried out using data from the online SoDa database for Brasov for the year 2005. Different statistical error tests were applied to evaluate the accuracy of the models. The predicted values are also compared with values from three other known models concerning the global and diffuse solar radiation. A new mixed model was developed for the estimation of monthly average daily global horizontal solar radiation. The data processing was performed by means of a realtime interface developed with LabVIEW graphical programming language. The parameters taken into account were the relative sunshine, the clearness index, the extraterrestrial radiation, the latitude and the longitude. The methodology is simple and effective and may be applied for any region. Its effectiveness was proven through comparison with global models. V C 2014 AIP Publishing LLC.

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“…Quality assessment (QA) tests are described in number of publications, e.g. in [1,2]. In QA, two types of tests are run: (i) first, the automatic tests are run to identify the obvious issues by set of numerical criteria; next (ii) the visual inspection is used to identify issues, which are of more complex nature and difficult to describe by general numerical criteria.…”

Section: Ground Measurementsmentioning

confidence: 99%

Site-adaptation of satellite-based DNI and GHI time series: Overview and SolarGIS approach

Cebecauer

Šúri

2016

AIP Conference Proceedings

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Abstract. Site adaptation is an approach of reducing uncertainty in the satellite-based longterm estimates of solar radiation by combining them with short-term high-accuracy measurements at a project site. We inventory the existing approaches and introduce the SolarGIS method that is optimized for providing bankable data for energy simulation in Concentrating Solar Power. We also indicate the achievable uncertainty of SolarGIS model outputs based on siteadaptation of projects executed in various geographical conditions.

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Quality control of solar radiation data: Present status and proposed new approaches

Cited by 149 publications

References 14 publications

A database of multi-year (2004–2010) quality-assured surface solar hourly irradiation measurements for the Egyptian territory

A database of multi-year (2004–2010) quality-assured surface solar hourly irradiation measurements for the Egyptian territory

Monthly average daily global and diffuse solar radiation based on sunshine duration and clearness index for Brasov, Romania

Site-adaptation of satellite-based DNI and GHI time series: Overview and SolarGIS approach

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