An assessment of the solar radiation climate of the Cyprus environment

Jacovides, C.P.; Kaltsunides, N.; Hachioannou, L.; Stefanou, L.

doi:10.1016/0960-1481(93)90050-q

Cited by 22 publications

(13 citation statements)

References 9 publications

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“…Visibility is generally very good; however, during the spring period, the atmosphere is very hazy with dust brought from the Arabian and African deserts. More details on the radiation climate of Cyprus are given in [16]. The MBE provides information on the long-term performance of studied models.…”

Section: Model Performance and Discussionmentioning

confidence: 99%

The Applicability of Several Diffuse Solar Radiation Models to the Cypriote Environment

Jacovides

Timbios

Kaltsunides

et al. 1995

International Journal of Solar Energy

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Solar radiation measurements at one location in Cyprus are used to test the applicability of several theoretical and empirical models which compute diffuse radiation on a horizontal surface. Two types of correlation tests were used [I]: the first correlates the ratio of diffuse-to-global solar radiation with the "clearness index" 6; and the second correlates the ratio of diffuse-to-global solar radiation with the fractional sunshine.Therefore, the selected models for discussion are compared and tested for their applicability to one location in the eastern Mediterranean basin in general, on the basis of statistical error tests. A comparative study of the models shows that Page's model [3], based on the first type of correlations and Hay's one [13] based on the second type of correlations, are equally accurate for the greater Cypriote environment. Finally,' two statistical equations are proposed for estimating diffuse radiation for solar energy applications in the greater environment of Cyprus.

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Section: Model Performance and Discussionmentioning

confidence: 99%

The Applicability of Several Diffuse Solar Radiation Models to the Cypriote Environment

Jacovides

Timbios

Kaltsunides

et al. 1995

International Journal of Solar Energy

Self Cite

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“…The geographical location and the dry climate, especially in Summer, make Cyprus one of the regions with the highest solar energy potential in Europe. 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: 99%

“…Aerosols are among the most significant attenuators of solar radiation over the Mediterranean basin [22][23][24][25][26][27]. In summer, cloudy conditions are rare at Cyprus, and aerosols play a key role in the formulation of the levels of solar radiation that reaches the surface (SSR) [15]. The origin and the composition of aerosols over Cyprus vary significantly.…”

Section: Introductionmentioning

confidence: 99%

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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“…A lot of publications appeared in the literature concerning the shortwave radiation components measured at Athalassa [24][25][26][27][28], and Petrakis et al [29] have presented the "Typical Meteorological Year" for Nicosia (Cyprus). More recently, Kalogirou et al [30] presented an assessment of the solar radiation climate at two sites in Cyprus one at Athalassa an inland location and the second one at Larnaca a coastal location, based on measurements of about two years.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Downward and Upward Longwave Radiation at Athalassa, an Inland Location of the Island of Cyprus

Pashiardis

Kalogirou

2021

Applied Sciences

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In this study, two years of hourly longwave downward and upward irradiance measurements at Athalassa, an inland location, are used to analyze and compare them. A detailed quality control process was followed according to the suggested tests proposed by the Baseline Surface Radiation Network (BSRN) group. The criteria involved are based on physically possible, extremely rare and climatological limits. Furthermore, comparison tests were also applied between the two longwave components as well as with air and ground surface temperatures. Additionally, time consistency and persistency tests were applied. All the suspect data were excluded from the analysis. The data showed that the frequency distribution of downward longwave irradiances follows a normal distribution function, while the upward longwave follows an almost normal distribution but with a long positive tail. The annual mean daily downward longwave irradiation is 27.3 MJ m−2 and the annual mean daily upward longwave irradiation is 37.8 MJ m−2. The net longwave irradiation is always negative ranging from −5.9 to −12.1 MJ/m2. Various models were tested to estimate daylight and all day downward and upward longwave irradiances under clear-sky and all-sky conditions. For the comparison of measured and estimated values the root-mean-square errors and linear regression correlations have been used. The results of this comparison showed that Idso’s and Brunt’s models perform well, and they can be used to estimate downward longwave irradiance under clear-sky conditions. Furthermore, both models were extended to estimate the daylight downward longwave irradiance under all-sky conditions by taking into account the ratio of global to the clear-sky global solar irradiance. In this case, the RMSE of the local calibrated coefficients scheme of Idso’s model was 30.6 W m−2, while Brunt’s model showed slightly lower value (29.0 W m−2).

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An assessment of the solar radiation climate of the Cyprus environment

Cited by 22 publications

References 9 publications

The Applicability of Several Diffuse Solar Radiation Models to the Cypriote Environment

The Applicability of Several Diffuse Solar Radiation Models to the Cypriote Environment

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

Characteristics of Downward and Upward Longwave Radiation at Athalassa, an Inland Location of the Island of Cyprus

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