Record Display for the EPA National Library Catalog
RECORD NUMBER: 3 OF 23
|OLS Field Name||OLS Field Data|
|Main Title||Comparison of Three Methods for Calculating the Standard Deviation of the Wind Direction.|
|Author||Turner, D. B. ;|
|CORP Author||Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.|
|Additional Subjects||Wind direction ; Standard deviation ; Dispersions ; Meteorology ; Air pollution ; Atmospheric physics ; Estimating ; Reprints ;|
Three methods to calculate wind direction standard deviation are evaluated. Although eight hours of wind data show no significant differences between the methods, synthetically generated data having standard deviations near the maximum possible, show the Yamartino method to perform well. Also, the wind direction for periods, such as an hour, are shown to be well represented by the arctangent of the mean sines and cosines.