Comments on Quality Control of Solar Radiation Data Measured at a Ground Station in Hot and Dry Zone

  • D. KumarEmail author
  • B. Ravindra
Conference paper
Part of the Springer Proceedings in Energy book series (SPE)


Ministry of New and Renewable Energy, Govt. of India has set a target of 100 giga watts (GW) power from solar power till 2022. Hence, the importance of solar radiation resource assessment. Ground-based solar radiation measurement and its quality plays an important role in the study of estimation of solar radiation and forecasting of solar power produced. In this paper hourly averaged solar irradiance data on a horizontal surface, measured at Indian Meteorological Department weather station for the hot and dry region, Jodhpur (India) is analyzed for the month of August, 2015. Data quality check is done in two stages where, at the first stage, solar irradiance is taken in original form, and then in the second stage BSRN standard guidelines, coherence and correlation tests are applied. Data quality check of ground-based solar radiation data for Jodhpur during rainy season (month having highest error/disturbances) highlights the need to include other weather parameters such as rainfall data. The results are compared with other available data, and some suggestions for data quality improvement are discussed.





Earth Eccentricity Factor


Extraterrestrial Radiation




Zenith Angle



Advance Measurement Station


Baseline Surface Radiation Network


Centre for Wind Energy Technology


Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas


Diffuse Horizontal Irradiance (W/m2)


Deutsches Zentrum Für Luft- und Raumfahrt


Direct Normal Irradiance (W/m2)


Extraterrestrial Radiation


Global Horizontal Irradiance (W/m2)


Indian Meteorological Department


International Organization for Standards


Jawaharlal Nehru National Solar Mission


Diffuse Horizontal Transmittance (DHI/GHI)


Direct Beam Transmittance (DNI/IE)


Clearness Index (GHI/(IE x cos(z)))


Management and Exploitation of Solar Resource Knowledge


Ministry of New and Renewable Energy


Normal Incidence Pyrheliometer


National Renewable Energy Laboratory


Precision Spectral Pyranometer


Royal Meteorological Institute of Belgium


Solar Energy Research Institute Quality Control software package


Solar Radiation Resource Analysis


World Meteorological Organization



The authors thank the IMD, Pune for supplying the data of Jodhpur and the MNRE, C-WET personnel (Dr. G. Giridhar and his colleagues) for their help in organizing an SRRA training program at IIT Jodhpur.


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© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.Centre for EnergyIndian Institute of Technology JodhpurJodhpurIndia
  2. 2.Department of Mechanical EngineeringIndian Institute of Technology JodhpurJodhpurIndia

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