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OF WeAtHeR MODiFiCAtiOn ENTITLED “ AN INDEPENDENT STATISTICAL EVALUATION OF THE VAIL OPERATIONAL CLOUD SEEDING PROGRAM ”
| Content Provider | Semantic Scholar |
|---|---|
| Author | Griffith, Don A. Yorty, David P. Solak, Mark E. |
| Copyright Year | 2013 |
| Abstract | A quote from Silverman states “Silverman (2007) showed that it is imperative to use as a control or controls, to the extent that available data permits, the streamflow station or stations that yield the most precise results.” He showed the control or combination of controls that had the highest correlation with the target and, especially, the lowest standard deviation of the residuals (differences between the observed and predicted values) will yield the most precise evaluation results. NAWC readily agrees with that statement, however, examination of the correlations obtained in this study as provided in Table 4 in The Vail paper (Silverman 2009a) suggests this ideal was not obtained. The r2 values obtained were significantly lower than those previously obtained by Silverman in the analyses he has performed on longterm Sierra Nevada programs (Silverman, 2007, 2008, 2009b). Values from Table 2 from Silverman (2009) indicate the correlation coefficients in his Vail analysis ranged from 0.775 to 0.918 or r2 values of 0.60 to 0.84; values considerably lower than he established for the three California programs where the r2 values ranged from 0.96 to 0.98. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://journalofweathermodification.org/index.php/JWM/article/download/171/217 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
