tag:blogger.com,1999:blog-4296819684712199241.post6506425376218284369..comments2016-09-17T18:29:50.110-07:00Comments on Brian B's Climate Blog: U.S. & Alaska Wind Chill RecordBrian Bnoreply@blogger.comBlogger2125tag:blogger.com,1999:blog-4296819684712199241.post-39882485581944229012016-02-23T12:28:57.278-08:002016-02-23T12:28:57.278-08:00The equation used to calculate WCET is an approxim...The equation used to calculate WCET is an approximation of the output of a mathematical model, over a wide range of air temperatures and wind speeds. It a good approximation, but it is better in some conditions than it is in others. I have used the model rather than the equation to calculate the WCET at Howard Pass and McGrath on the days of interest.<br /><br />Howard Pass -47.5 F (-44.2 C),V at 3 m= 53.7 mph (gives 111 km/h at 10 m) WCET = -105 F (-76 C).<br />McGrath -72 F (-57.8 C), V at 10 m = 7 mph (11 km/h) WCET = -98.4 F (-72.4 C)<br />Randall Osczevskihttps://www.blogger.com/profile/09858473343619938440noreply@blogger.comtag:blogger.com,1999:blog-4296819684712199241.post-28098902312789967042016-02-22T11:16:45.408-08:002016-02-22T11:16:45.408-08:00The model on which the equation for wind chill was...The model on which the equation for wind chill was based reduces the wind speed measured at the standard height of 10 m by 1/3 to get an estimate of the wind speed at the centre of the face (1.5 m). Since your anemometer measured the wind speed at a height of 2 m, not 10 m, the equation underestimates the wind speed at 1.5 m significantly. Thus the actual wind chill equivalent temperature was probably significantly lower than -100 F.<br /> Randall Osczevskihttps://www.blogger.com/profile/09858473343619938440noreply@blogger.com