A time series model for Kt with application to global synthetic weather generation

V. A. Graham, K. G.T. Hollands, T. E. Unny

Research output: Contribution to journalArticlepeer-review

124 Scopus citations


This article describes a general mathematical procedure for generating synthetic daily solar irradiation values. The procedure should be useful for simulating solar energy systems, requiring only the 12 monthly means (Kt), as input. The procedure is based on a time series analysis of the daily Kt values, described in the article. It incorporates the well-known probability distribution function for Kt, by using a transformed variable, rather than Kt, as the fundamental random quantity.

Original languageEnglish (US)
Pages (from-to)83-92
Number of pages10
JournalSolar Energy
Issue number2
StatePublished - 1988

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)


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