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Windrun: Difference between revisions
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A measurement of how much wind has passed a given point in a period of time. A wind blowing at three miles per hour for an entire hour would give a wind run of three miles. | A measurement of how much wind has passed a given point in a period of time. A wind blowing at three miles per hour for an entire hour would give a wind run of three miles. | ||
Cumulus calculates wind run by noting the average wind speed every minute (assuming the software remains running). Wind run is calculated by adding in a minute's worth of 'distance' corresponding to that speed. So the wind run for a particular period is effectively an indication of the average wind speed over that period. There are 1,440 minutes in a day. A wind speed measured in distance units divided by minutes, would give a wind run numerically equal to the speed each minute. A wind speed measured in distance units divided by hours, would give a wind run numerically equal to the speed when calculated for a period of an hour. | |||
A wind run of 240 miles over the course of a day, for example, means that the average (of typically 1,440 measurements of) wind speed over the 24 hour day was 10 mph. Cumulus stores the wind run for each day in [[dayfile.txt]]. | |||
[[Category:Terminology]] | [[Category:Terminology]] | ||
