Correlations between diffuse and global insolation for the Pacific Northwest

Correlations between diffuse and global insolation averaged over 1, 5, 10, 15, and 30 days are presented for six locations in Oregon and Idaho. Data collected over a 2-to 4-yr period was used to obtain the correlations. The statistical accuracy of the correlations for data averaged over 10, 15, and...

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Bibliographic Details
Published in:Solar energy 1984, Vol.32 (2), p.161-168
Main Authors: Vignola, F., McDaniels, D.K.
Format: Article
Language:English
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Summary:Correlations between diffuse and global insolation averaged over 1, 5, 10, 15, and 30 days are presented for six locations in Oregon and Idaho. Data collected over a 2-to 4-yr period was used to obtain the correlations. The statistical accuracy of the correlations for data averaged over 10, 15, and 30 days was improved through the use of moving averages. Linear regression fist appear adequate for all but the daily data. The correlations obtained do not appear to be influence by climatic conditions or altitude. However, a repeating semi-annual pattern is present.
ISSN:0038-092X
1471-1257
DOI:10.1016/S0038-092X(84)80032-8