Abstract: Most climate data are point observations, or accumulations over time, of some phenomenon at regular time intervals. Seasonal periodicity in the underlying stochastic process has led to the description of data by marginal ...

Abstract: Monthly means of measured daily radiation data from a defined horizontal site are used to estimate the prevailing atmospheric attenuation parameter. The estimation method uses the properties of the Fourier structure of ...

Abstract: Measures to qualify the values of formulas are described. These measures are then used to emphasize the distinction between computation or instrumentation error and environmental variation with particular application to ...

Abstract: Attenuation of solar radiation as a function of hour angle is expressed as a Fourier cosine series. A simple procedure is derived for calculating total direct daily radiation at a site with known latitude and orientation.