Absorption of solar energy in the atmosphere: Discrepancy between model and observations

Science

Volumn 273, Issue 5276, 1996, Pages 779-782

  Arking, Albert ^a  

^a JOHNS HOPKINS UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; ASTRONOMY; ATMOSPHERE; CLOUD; HUMIDITY; MODEL; OBSERVATION; PRIORITY JOURNAL; RADIATION ABSORPTION; SOLAR ENERGY; SOLAR RADIATION; TEMPERATURE; WIND;

AIR TEMPERATURE; ATMOSPHERIC MODEL; GCM; HUMIDITY; SOLAR ENERGY; WIND;

EID: 0029659698     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.273.5276.779     Document Type: Article

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22. s might be a sampling problem.
23. In calculating means, correlation coefficients, and regression parameters involving ratios-for example, atmospheric absorption and albedo-the data points were appropriately weighted by the incident solar flux at TOA.
24. J. The explained variance is then the ratio of the variance of y' to the variance of y, and it represents the fraction (or percentage) of the original variance contained in y that is contained in or "explained by" y'. Hence, it is a measure of the goodness of the linear fit, and for a perfect fit the explained variance is 100%. In single linear regression there is only one independent variable, and the explained variance (as defined here) is equal to the square of the correlation coefficient.
25. I thank Z. Li, M.-D. Chou, W. Ridgway, R. Cess, T. Charlock, and S. Warren for helpful discussions. Supported by NASA grant NAG 5-2039.