Statistical analysis for the characterization of solar energy utilization and inter-comparison of solar radiation at two sites in Cyprus

Pashiardis, Stelios; Kalogirou, Soteris A.; Pelengaris, A

doi:10.1016/j.apenergy.2017.01.018

Cited by 31 publications

(14 citation statements)

References 17 publications

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“…Spatial variability of DNI is larger, of ~15%. The estimated average levels of GHI are in reasonable agreement with measured GHI reported in other studies for specific locations [16,17]. Comparison of the estimated GHI and DNI with corresponding estimates from CMSAF, resulted to a good agreement for lower altitude stations and larger differences (up to 20%) for higher altitudes.…”

Section: Discussionsupporting

confidence: 87%

“…For example, in different locations in Cyprus, monthly averages of daily percentage of sun-shine of ~60% in winter and ~90% in summer have been reported [14,15]. The studies of Kalogirou et al, [16] and Pashiaridis et al, [17] report cumulative annual global horizontal irradiance (GHI) of 6700 -7300 MJ/m 2 for different sites in Cyprus, which is generally above the average annual GHI in the territory of southern European countries such as Greece and Italy [18,19] and comparable with average annual GHI reported for different sites in Malta and Andalusia, Spain [20,21].…”

Section: Introductionmentioning

confidence: 96%

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Effects of Aerosols and Clouds on the Levels of Surface Solar Radiation and Solar Energy in Cyprus

Fountoulakis¹,

Kosmopoulos²,

Papachristopoulou³

et al. 2021

Preprint

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Cyprus plans to drastically increase the share of renewable energy sources from 13.9% in 2020 to 22.9% in 2030. Solar energy can play a key role in the effort to fulfil this goal. The potential for production of solar energy over the island is much higher than most of European territory because of the low latitude of the island and the nearly cloudless summers. In this study, high quality and fine resolution satellite retrievals of aerosols and dust, from the newly developed MIDAS climatology, as well as information for clouds from CMSAF are used in order to quantify the effects of aerosols, dust, and clouds on the levels of surface solar radiation (SSR) and the corresponding financial loss for different types of installations for production of solar energy. An SSR climatology has been also developed based on the above information. Ground-based measurements were also incorporated to study the contribution of different species to the aerosol mixture and the effects of day-to-day variability of aerosols on SSR. Aerosols attenuate 5 – 10% of annual GHI and 15 – 35% of annual DNI, while clouds attenuate ~25 – 30% and 35 – 50% respectively. Dust is responsible for 30 – 50% of the overall attenuation by aerosols.

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Section: Discussionsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 96%

Effects of Aerosols and Clouds on the Levels of Surface Solar Radiation and Solar Energy in Cyprus

Fountoulakis¹,

Kosmopoulos²,

Papachristopoulou³

et al. 2021

Preprint

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show abstract

“…In DS, H D has value of 17.20 MJ m −2 and maximum hourly average direct solar normal (H h D ) value = 2.00 MJ m −2 (Fig. 8b) Pashiardis et al (2017), who performed a statistical analysis of H D values, results found by Marques Filho et al (2016) for Rio de Janeiro and for locations in Kenya (Kariuki and Sato, 2018), with values from satellite and two places of Morocco (Gairaa et al, 2017).…”

Section: Hourly Solar Irradiationmentioning

confidence: 97%

Analysis of Measurements of Direct Normal and Global Solar Radiation for Maceió, Alagoas State, Northeastern Brazil

Júnior

Souza

Junior

et al. 2020

Rev. bras. meteorol.

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Studying solar radiation is essential for human knowledge, since it is present in practically all its activities. Thus, the aim of this work was to analyze the climatic and seasonal variation of direct normal and global solar radiation in the region of Maceió, Alagoas State, Northeastern Brazil with sky conditions characterized by clearness index (Kt). The Kt was determined by the ratio between global solar irradiance and solar irradiance at the top of the atmosphere. The highest occurrences of daily direct normal solar irradiance under conditions of Kt ≥ 0.6 were recorded between 400 W m−2 and 700 W m−2 for all seasons. Under conditions of 0.4 ≤ Kt < 0.6, the daily direct normal solar irradiance occurred between 200 W m−2 and 500 W m−2 and for conditions of Kt < 0.4, its maximum value was 200 W m−2. It was observed that the levels of solar incidence in the study region depend on cloud cover conditions, with little influence of seasonality.

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“…A análise estatística utiliza banco de dados de medição de irradiação (ou estimações baseadas em modelos empíricos) e buscam caracterizar o fenômeno através de estatísticas descritivas e da frequência de distribuição, como feito por Pashiardis et al (2017) e que também será adotado neste artigo.…”

Section: Introductionunclassified

Análise Estatística da Irradiação Solar de uma Estação Solarimétrica

Rodrigues

Gomes

Sant’Anna

et al. 2020

Anais Do Simpósio Brasileiro De Sistemas Elétricos 2020

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Este estudo propõe uma nova abordagem para análise dos dados de irradiação solar de uma estação solarimétrica localizada na cidade de Irecê-BA. A abordagem proposta contempla uma análise horária da irradiação solar com finalidade de obter uma menor variação estocástica das medições por hora. As medidas estatísticas utilizadas para caracterizar os dados foram mínimo, máximo, média, mediana e desvio-padrão. A hipótese de distribuição normal foi testada usando dois testes paramétricos Anderson-Darling e Shapiro-Wilk. A simetria e forma da distribuição dos dados foram analisados utilizando boxplots e histogramas. Foram encontrados pontos extremos nos boxplots, assim como grande assimetria na distribuição dos dados em diversos horários. Através dos testes de aderência foi rejeitada a normalidade da distribuição de irradiação solar na maioria das horas dentro do banco anual. Foi realizado um estudo por estação do ano, que apresentou um comportamento diferente quanto a simetria dos dados, sendo o outono a estação mais uniforme e primavera a mais estocástica. A primavera e o verão apresentaram melhores condições para a instalação de placas fotovoltaicas, devido aos altos índices de irradiação solar, e o outono e o inverno apresentam irradiação solar satisfatória para a manutenção dessa forma de geração durante todo o ano.

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Statistical analysis for the characterization of solar energy utilization and inter-comparison of solar radiation at two sites in Cyprus

Cited by 31 publications

References 17 publications

Effects of Aerosols and Clouds on the Levels of Surface Solar Radiation and Solar Energy in Cyprus

Effects of Aerosols and Clouds on the Levels of Surface Solar Radiation and Solar Energy in Cyprus

Analysis of Measurements of Direct Normal and Global Solar Radiation for Maceió, Alagoas State, Northeastern Brazil

Análise Estatística da Irradiação Solar de uma Estação Solarimétrica

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