by b.glynn » Mon Jun 28, 2010 10:59 am
Hello Guillaume
I see this post is a little dated but I'm going to share the solution for others who my be interested:
Atmospheric models solve the equations of motion in constant pressure coordinates so we'll be working with that.
If your doing this as a case study the hypsometric equation is going to give more accurate results, assuming to have a way to get Tmean, SP and rho for that day.
If your looking to forecast for..say..tomorrows 100m meter wind speed then using a spreadsheet to generalize the levels should work. Try this:
dP = rho * g dZ
ex:
dP = 1.225 * 9.81 * 100m
dP ~ 1.202 kPa
So your level would be .9778
You will need to change you surface P accordingly. Tuning your Params for such fine vertical resolutions is going to be more than half the battle.
Hope this helps.
BG