versión On-line ISSN 1850-468X
Results of the statistic analysis of time series of annual averages of hours of solar brightness registered in stations of Argentina are presented; these values compensate the insufficiency of data of solar irradiation and allow studying tendencies related to the Global Climatic Change. The measurement error was taken into account in a previous study of consistency, temporal analysis is made with the application of the test of Mann-Kendall and the obtained results are discussed. They appear some stations in which the annual averages of hours of solar brightness decrease significantly, grouping itself essentially in a zone located to the northeast of Humid Pampas and to the south of the Mesopotamia.
Palabras llave : Sunshine hours; Time series; Trends; Climatic Change.