Improving The Accuracy of the Empirical Clear Sky Solar Irradiance Models

Abstract

This paper is focused on improving the quality of nowcasting solar irradiance by enhancing the clear sky component of the model. A simple linear correction for the average atmospheric transmittance is proposed. The correction is based on the most recent measurements recorded prior the forecasting moment. The proposed procedure was tested against data measured on the Solar Platform of the West University of Timisoara. Overall results demonstrates a notable improvement in the clear sky model accuracy.

If the inline PDF is not rendering correctly, you can download the PDF file here.

  • [1] Solar Radiation Monitoring Station of the West University of Timisoara, Romania http://solar.physics.uvt.ro/srms

  • [2] M. Kottek, J. Grieser, C. Beck, B. Rudolf, F. Rubel, Meteorologische Zeitschrift 15 (2006) 259.

  • [3] V. Badescu, Theoretical and Applied Climatology 72 (2002) 127.

  • [4] M Paulescu, V Badescu, Theoretical and Applied Climatology 103 (2011) 459.

  • [5] M. Paulescu, Z. Schlett, Renewable Energy 29 (2004) 767.

  • [6] M. Paulescu, Z. Schlett, Theoretical and Applied Climatology 75 (2003) 203.

  • [7] MathCAD (2014) PTC - MathCAD - Engineering Calculations Software.

OPEN ACCESS

Journal + Issues

Search