Stochastic characteristics of solar irradiation and temperatures in Botswana
Journal article
Authors / Editors
Research Areas
Publication Details
Subtitle: Stochastic characteristics of solar irradiation and temperatures in Botswana
Author list: Lungu, Edward
Publisher: American Meteorological Society
Publication year: 2011
Volume number: 36
Issue number: 359
Start page: 91
End page: 101
Number of pages: 11
ISSN: 1558-8432
Languages: English-United States (EN-US)
Abstract
This paper presents bivariate models that relate solar irradiation to extreme temperatures for Sebele, Botswana. Autocorrelation analysis revealed that the solar irradiation series is stationary for d = 2 and D = 0, and the extreme temperatures series are stationary for either d = 1 and D = 1, or d = 0 and D = 1, 2... N. A lag of three months is found between the peaks of the differenced series of solar irradiation and maximum temperatures, whereas there is a lag of at most one month between the differenced series of solar irradiation and minimum temperatures. Analysis of the noise component revealed that the bivariate processes under consideration behaved either as ARIMA processes of order (0,1,1) × (0,1,1)12 or as MA processes of order (0,1,1)12. However, where non-seasonal influences are present, i.e., in the case of model (0, 1, 1) × (0, 1, 1)12, these effects exhibit month to month memory only. The relationships found for Sebele can be applied to estimate extreme temperatures at other locations in the region, where similar climatic conditions prevail.
Keywords
No matching items found.
Documents
No matching items found.
