Calculation of 2m and 10m variables in WRF output

[regi_rock]

Hi,

I am working with some WRF output and have realized that, even when the moving nested domains in the WRF simulation move past land masses, there is always a non-NaN output value for the 2-meter temperature and water vapor mixing ratio, as well as the 10-meter u- and v-wind. This leads me to ask: are these variables calculated using the height above sea level, or are they calculated relative to the height of the ground (so, when we are over a land mass of height 50m above sea level, the "10m wind" would be 60m above sea level)?

Thank you!

 

[Ming Chen]

2m temperature and 10m winds are variables above the ground level. At a land point 50m above the sea level, the "10m wind" would be wind at 60m height above the sea level.
NaN indicates something goes wrong in the model . Please look at your case and figure out possible issues.