Stochastic models for sunshine duration and solar irradiation

P. K. Jain, E. M. Lungu

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Harmonic analysis of sunshine duration and solar irradiation measured at Sebele, Botswana is carried out. The data used consists of the monthly averages and the Julian-days averages of sunshine duration and solar irradiation sequences. This study involves splitting the time series into deterministic and stochastic components, and determining the proportion of the variance explained by each component. The stochastic component is analyzed for persistence using the Box and Jenkins technique. It is found that the stochastic component for monthly averages solar radiation series is best described by the second-order autoregressive Markov process, while that for Julian-days averages series has no memory.

Original languageEnglish
Pages (from-to)197-209
Number of pages13
JournalRenewable Energy
Issue number2
Publication statusPublished - Oct 1 2002

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Civil and Structural Engineering


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