Quality control of global solar radiation using sunshine duration hours

Moradi, Isaac

doi:10.1016/j.energy.2008.09.006

Cited by 117 publications

(50 citation statements)

References 7 publications

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“…For example, the CERES-EBAF had a bias of 7.31 W/m 2 at the CMA sites, whereas the biases of the six reanalysis R s products ranged from 23.15 W/m 2 to 71.95 W/m 2 . Previous studies have pointed out that the reliability of data obtained in China has often been dubious because of the technical failures and operating problems [54,55]. However, this study found that the bias and RMSE of the CERES-EBAF R s product were 11.36 W/m 2 and 19.38 W/m 2 , respectively, in DJF using the quality-controlled CMA surface observations as the validation data, whereas these values were 1.30 W/m 2 and 18.04 W/m 2 in JJA.…”

Section: Comparison With Ceres-ebafmentioning

confidence: 99%

“…Daily and Monthly meteorological data at 122 CMA routine weather stations released by the CMA Meteorological Information Center were used in this study. The CMA surface observations were dubious due to technical failures and operating problems (e.g., instrument replacement) [54,55]. The quality of the CMA surface observations used in this study was controlled based on the surface reconstructed data using routine meteorological data including air temperature, air pressure, relative humidity, sunshine duration, and precipitation [4,56].…”

Section: Ground Measurementsmentioning

confidence: 99%

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Evaluation of the Reanalysis Surface Incident Shortwave Radiation Products from NCEP, ECMWF, GSFC, and JMA Using Satellite and Surface Observations

et al. 2016

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Solar radiation incident at the Earth's surface (R s ) is an essential component of the total energy exchange between the atmosphere and the surface. Reanalysis data have been widely used, but a comprehensive validation using surface measurements is still highly needed. In this study, we evaluated the R s estimates from six current representative global reanalyses (NCEP-NCAR, NCEP-DOE; CFSR; ERA-Interim; MERRA; and JRA-55) using surface measurements from different observation networks [GEBA; BSRN; GC-NET; Buoy; and CMA] (674 sites in total) and the Earth's Radiant Energy System (CERES) EBAF product from 2001 to 2009. The global mean biases between the reanalysis R s and surface measurements at all sites ranged from 11.25 W/m 2 to 49.80 W/m 2 . Comparing with the CERES-EBAF R s product, all the reanalyses overestimate R s , except for ERA-Interim, with the biases ranging from´2.98 W/m 2 to 21.97 W/m 2 over the globe. It was also found that the biases of cloud fraction (CF) in the reanalyses caused the overestimation of R s . After removing the averaged bias of CERES-EBAF, weighted by the area of the latitudinal band, a global annual mean R s values of 184.6 W/m 2 , 180.0 W/m 2 , and 182.9 W/m 2 were obtained over land, ocean, and the globe, respectively.

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Section: Comparison With Ceres-ebafmentioning

confidence: 99%

Section: Ground Measurementsmentioning

confidence: 99%

Evaluation of the Reanalysis Surface Incident Shortwave Radiation Products from NCEP, ECMWF, GSFC, and JMA Using Satellite and Surface Observations

et al. 2016

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“…Therefore, one of the major concerns of operational radiometric networks is to perform a rigorous quality control (QC) on the measurements (e.g. Journée and Bertrand, 2011;Moradi, 2009;Roesch et al, 2011). This is an indispensable step before further processing of the data.…”

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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“…A medida da radiação solar foi, durante muito tempo, difícil e onerosa, em razão dos custos elevados limitarem as aquisições de radiômetros, restringindo seu uso aos centros de pesquisa (Blanco & Sentelhas, 2002;Tiba et al 2005;Turco & Rizatti, 2006;Rensheng et al, 2006;Robaa, 2008;Moradi, 2009;Carvalho et al 2011); assim, muitos modelos estatísticos e/ou paramétricos de estimativa foram desenvolvidos com base em parâmetros meteorológicos, geográficos, atmosféricos e astronômicos. Neste contexto, Angströn (1924) propôs um modelo estatístico linear, que foi simplificado por Prescott (1940), em função das dificuldades de medidas em dias com ausência total de nuvens e que correlaciona a transmissividade atmosférica da radiação solar global (K T d ) (razão entre a radiação global e a radiação no topo da atmosfera) e a razão de insolação (n/N) (razão entre o brilho solar e o fotoperíodo).…”

Section: Introductionunclassified

Estimativas da radiação global incidente em superfícies inclinadas com base na razão de insolação

Souza

Escobedo

2013

Agraria

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Quality control of global solar radiation using sunshine duration hours

Cited by 117 publications

References 7 publications

Evaluation of the Reanalysis Surface Incident Shortwave Radiation Products from NCEP, ECMWF, GSFC, and JMA Using Satellite and Surface Observations

Evaluation of the Reanalysis Surface Incident Shortwave Radiation Products from NCEP, ECMWF, GSFC, and JMA Using Satellite and Surface Observations

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

Estimativas da radiação global incidente em superfícies inclinadas com base na razão de insolação

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