Month-to-Month Variation of Global Solar Radiation in Catalonia (Spain)

Santabàrbara, J. M.; Calbó, Josep; Baldasano, J. M.; Esteve, Juan Carlos Moreno; Mitjà, Albert

doi:10.1002/(sici)1097-0088(199606)16:6<711::aid-joc42>3.0.co;2-m

Cited by 12 publications

(5 citation statements)

References 3 publications

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“…Alentejo and Algarve are the Portuguese regions with the highest installed solar capacity (APREN, 2014). Santabàrbara et al (1996) built annual and seasonal maps of solar radiation in and around Catalonia province (Spain), for the period 1964-1993, from daily in situ global solar irradiation datasets and found maximum values over the inner part of Catalonia and at the south coast. According to Jerez et al (2013), IP shows a strong potential in terms of complementarity between solar and wind power.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

An Iberian climatology of solar radiation obtained from WRF regional climate simulations for 1950–2010 period

Perdigão

Salgado

Magarreiro

et al. 2017

Atmospheric Research

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The mesoscale Weather Research and Forecasting (WRF) Model is used over the Iberian Peninsula to generate 60 years (1950-2010) of climate data, at 5 km resolution, in order to evaluate and characterize the incident shortwave downward radiation at the surface (SW), in present climate. The simulated values of SW in the period 2000-2009 were compared with data measured in Spanish and Portuguese meteorological stations before and a statistical BIAS correction was applied using data from Clouds and the Earth's Radiant Energy System (CERES), on board four different satellites. The spatial and temporal comparison between WRF results and observations show a good agreement for the analyzed period, although the model overestimates observations. This overestimation has a mean normalized bias of about 7% after BIAS correction (or 17% for original WRF output). Additionally, the present simulation was confronted against another previously validated WRF simulation performed with different resolution and set of parametrizations, showing comparable results. WRF adequately reproduces the observational features of SW with correlation coefficients above 0.8 in annual and seasonal basis. 60 years of simulated SW over the Iberian Peninsula were produced, which showed annual mean values that range from 130 W/m 2 , in the northern regions, to a maximum of around 230 W/m 2 in the southeast of the Iberian Peninsula (IP). SW over IP shows a positive gradient from north to south and from west to east, with local effects influenced by topography and distance to the coast. The analysis of the simulated cloud fraction indicates that clear sky days are found in more than 30% of the period at the southern area of IP, particularly in the Algarve (Portugal) and Andalusia (Spain), and this value increases significantly in the summer season for values above 80%.

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Section: Accepted Manuscriptmentioning

confidence: 99%

An Iberian climatology of solar radiation obtained from WRF regional climate simulations for 1950–2010 period

Perdigão

Salgado

Magarreiro

et al. 2017

Atmospheric Research

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“…These instruments were recalibrated in May of 1995 to assure quality of data. The configuration of the station is exactly the same as the main stations used to develop the atlas of solar radiation in Catalonia (Santabárbara et al 1996). Diffuse measurements were corrected for shadowband blocked view; given the unknowns of radiance distribution, however, this correction adds uncertainty to diffuse values.…”

Section: Datamentioning

confidence: 99%

A Method for Sky-Condition Classification from Ground-Based Solar Radiation Measurements

2001

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Identification of clouds from satellite images is now a routine task. Observation of clouds from the ground, however, is still needed to acquire a complete description of cloud conditions. Among the standard meteorological variables, solar radiation is the most affected by cloud cover. In this note, a method for using global and diffuse solar radiation data to classify sky conditions into several classes is suggested. A classical maximum-likelihood method is applied for clustering data. The method is applied to a series of four years of solar radiation data and human cloud observations at a site in Catalonia, Spain. With these data, the accuracy of the solar radiation method as compared with human observations is 45% when nine classes of sky conditions are to be distinguished, and it grows significantly to almost 60% when samples are classified in only five different classes. Most errors are explained by limitations in the database; therefore, further work is under way with a more suitable database.

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“…In this case, the methodology is explained in Figure 6. The data processing was done by using a model that relies, in part, in the astronomical study of solar irradiance proposed by Santabàrbara et al [33], and describes in the following paragraphs.…”

Section: Model Used For Data Processingmentioning

confidence: 99%

“…In case of clear sky and for mean latitudes, between 30-50 as the case of Murcia's region, the expression of daily mean irradiation at sea level, H 0 is possible to use and analytical expression, (2) which correspond to a simplified model proposed by Santabàrbara et al [33]…”

Section: 3mentioning

confidence: 99%

Treatment of Data and GIS Implementation of Solar Radiation and Temperature Maps: Example in South-East of Spain

Vera-García

García-Cascales

Hernández-Guillén

et al. 2012

ISRN Renewable Energy

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This paper presents the maps of solar radiation on the surface of south-east region of Spain named Región de Murcia. These maps are the result of treatment, study, and correlations obtained by data of 35 weather stations distributed throughout the region. These stations have collected data for 6 to more than 25 years. The paper presents the work performed for the treatment of collected data, the correlations used for the adjustment of the data, and the parameters obtained as a result of this adjustment. The weather stations are equipped with various sensors to collect several parameters, the measures covered and used for the study were global and diffuse radiation (in case that the station has pyranometer diffuse) and ambient temperature. The results were used to produce maps of horizontal radiation (global and diffuse) and ambient temperature at the surface of the region studied. To achieve the irradiation maps for this extended region has been used “r.sun” program, technical program that with the help of GRASS program uses geographic information systems (GISs) to evaluate the influence of geographical variables captured on horizontal plane at the surface. Using the results of the program for theoretical data and/or generic, and with the feedback obtained by the correlations of measures covered from weather stations, we have studied the incident radiation on the region. The main result of this study was to produce maps of irradiation on horizontal plane, correction for inclined surfaces, and also maps of temperature of the studied region. On this basis, results have been produced maps and tables of monthly solar radiation (mean maximum and minimum) for each of the 45 municipalities of the Region of Murcia. Thus, was obtained a useful tool for the calculation of available energy and thermal needs at the design process of plants using solar thermal and photovoltaic.

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Month-to-Month Variation of Global Solar Radiation in Catalonia (Spain)

Cited by 12 publications

References 3 publications

An Iberian climatology of solar radiation obtained from WRF regional climate simulations for 1950–2010 period

An Iberian climatology of solar radiation obtained from WRF regional climate simulations for 1950–2010 period

A Method for Sky-Condition Classification from Ground-Based Solar Radiation Measurements

Treatment of Data and GIS Implementation of Solar Radiation and Temperature Maps: Example in South-East of Spain

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