Level - is this above MSL or above the selected point ?
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when i select a level of i.e. 900ft in an aera which is already 1500ft above MSL i still see a wind - so i assume that a selected level of 900ft should be above a ground level in this area. What is with "level" is really ment in regards to altitude ?
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@martinsky
When you select an altitude associated with a map, it is always versus see level, not versus your location. The 0 is the see level. If you live in a place at 1000m and you check a map at your location at 2000m, it will be 2000m above see level or 1000m above your location -
@Yves70 So in that case, if I look at the "Surface Wind" for a place that is at 3,000m above sea level and then set the level to 3,000m, the results should be the same, but they are not. Am I doing something wrong?
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@chipchap42
@martinsky
Find here a clear explanation about altitude and winds:
https://community.windy.com/topic/5014/windspeed-and-direction-different-heights/1?_=1596783618621
You can see that the altitude slider shows a real altitude at surface and 100m (330ft), but then for higher levels the altitude are in connection with isobaric surfaces 950hPa, 925 hPa, 900hPa, 850hPa....
Winds at these isobaric surface levels must be considered in free atmosphere.
