10-10-2018, 03:36 PM
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see you later, I'm gone
Industry Role:
Join Date: Oct 2002
Posts: 14,091
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https://www.ventusky.com/faq
Quote:
Why do wind speeds on Ventusky differ from values on other websites?
Differences may be down to several causes. You must always compare identical data. On our website we display wind gusts and average wind speed. Nevertheless, average wind speed may be computed for a period of 1 minute, or 10 minutes. Models operated by NOAA (GFS, HRRR) use 1-minute average. The remaining models (ICON, GEM) use 10-minute average. This may cause differences between individual models and values being compared from other websites. Differences manifest mainly in the case of tropical cyclones, where a 1-minute average value is markedly higher than a 10-minute average value of wind speed. Differences may also occur owing to the fact that we display data from numerical models that may not include all the data that have been measured (if, for example, a private station on a Caribbean island measures an average wind speed over 200 km/h during a hurricane, such data will not enter the models displayed by us as the models only utilise a professional network of stations, which is sparse in some areas).
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