<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12pt">Dear WRF users<br><br>I want to calculate wind direction and relative humidity from WRF outputs for comparing with observations at special meteorological station<br><br>i have used NCL functions but now i want to calculate using my own fortran code from variables available in the wrf output file<br><br>what is the formulas for calculating relative humidity and wind direction from wrf output variables<br><br>Thanks in advance<br>Hossein<br><div><br></div></div></body></html>