Analysis of clear hour solar irradiation for seven Canadian stations

Journal Article · Sun Dec 31 04:00:00 EST 1995 · Solar Energy

DOI:https://doi.org/10.1016/0038-092X(95)00089-A· OSTI ID:414962

Garrison, J; Sahami, K ^[1]

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1. San Diego State Univ., CA (United States)

Hourly global and diffuse irradiation and corresponding surface meteorological data have been analyzed for the seven Canadian stations at Edmonton, Goose Bay, Montreal, Port Hardy, Resolute, Toronto, and Winnipeg. The variation of the most probable clear hour values of clearness index k{sub t}, diffuse index k{sub d}, direct beam index k{sub b}, and Angstrom turbidity coefficient {beta} with solar elevation, atmospheric precipitable water, and snow depth are obtained. Values of these quantities are presented which are consistent with the attenuation and scattering of solar radiation by the atmosphere which is expected. The most probable values of {beta} tend to be lower than the average values of {beta} recently reported by Gueymard. The data indicate a drift in the calibration of the instruments used for measurements of the irradiation data for the stations at Goose Bay and Resolute. The data for the other five stations indicate that the instrument calibration is maintained over the years of the data. 4 refs., 8 figs., 5 tabs.

• OSTI ID: 414962
• Journal Information: Solar Energy, Journal Name: Solar Energy Journal Issue: 6 Vol. 55; ISSN SRENA4; ISSN 0038-092X
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
99 GENERAL AND MISCELLANEOUS
ATMOSPHERIC PRECIPITATIONS
CALIBRATION
CANADA
CLOUDS
DATA ANALYSIS
DIFFUSE SOLAR RADIATION
METEOROLOGY
NUMERICAL DATA
SNOW
SOLAR RADIATION
STATISTICAL DATA
TIME DEPENDENCE