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An improved technique for global solar radiation estimation using numerical weather prediction

Shamim, M.A., Remesan, R., Bray, Michaela ORCID: and Han, D. 2015. An improved technique for global solar radiation estimation using numerical weather prediction. Journal of Atmospheric and Solar-Terrestrial Physics 129 , pp. 13-22. 10.1016/j.jastp.2015.03.011

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Global solar radiation is the driving force in hydrological cycle especially for evapotranspiration (ET) and is quite infrequently measured. This has led to the reliance on indirect techniques of estimation for data scarce regions. This study presents an improved technique that uses information from a numerical weather prediction (NWP) model (National Centre for Atmospheric Research NCAR's Mesoscale Meteorological model version 5 MM5), for the determination of a cloud cover index (CI), a major factor in the attenuation of the incident solar radiation. The cloud cover index (CI) together with the atmospheric transmission factor (KT) and output from a global clear sky solar radiation were then used for the estimation of global solar radiation for the Brue catchment located in the southwest of England. The results clearly show an improvement in the estimated global solar radiation in comparison to the prevailing approaches.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: Q Science > QC Physics
Uncontrolled Keywords: Aerosol scattering; Atmospheric transmissivity; Clear sky radiation; Cloud cover; Upper atmospheric information; Diffuse radiation; Global solar radiation; Numerical weather model MM5; Sunshine
Publisher: Elsevier
ISSN: 1364-6826
Date of Acceptance: 30 March 2015
Last Modified: 28 Oct 2022 09:00

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