An essential part of the development of computer based solar energy system design and sizing is the acceptance of a common solar radiation data base to minimize calculation time and to facilitate comparative studies made by different organizations. The data records used in the Australian Solar Radiation Data Handbook are available in computer compatible form, however few users could justify the effort involved in working from this basic data because of the difficulty of manipulating and storing 18 years of hourly records for each location of interest. Inaddition many studies of solar energy systems require concurrent records of solar irradiation and other meteorological data such as temperature , wind speed and cloud cover. Concurrent data was developed by Walsh [1] for 18 locations for the period 1969-1978. Since 1982 five more stations have been added to the Bureau of Meteorology network, however this additional data has not been processed into concurrent records of solar irradiation ,temperature, wind speed and cloud cover.

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