wrf dimension changing

Hello
i have problem in which the ncl_fildump of the WRF-NMM change from 00
to 12 forcast cycles ,i donot know why , both run are identical in all
things
so what makes such changes , i am using the GFS data for intial and
boundary condition for the WRF model.
i have attached the output of ncl_filddump of both files.
for example for 00 cycle
     forecast_time0 = 4
      g0_lat_1 = 151
      g0_lon_2 = 250
      lv_ISBL3 = 39
      forecast_time4 = 34
      g0_lat_5 = 179
      g0_lon_6 = 261
      lv_ISBL7 = 25
      lv_HYBL8 = 2
      forecast_time9 = 22
      g0_lat_10 = 179
      g0_lon_11 = 277
      lv_SPDY12 = 2
      forecast_time13 = 33
      forecast_time14 = 17
      forecast_time15 = 16
      forecast_time16 = 11
      forecast_time17 = 11
and for the 12
     forecast_time0 = 34
      g0_lat_1 = 179
      g0_lon_2 = 261
      lv_ISBL3 = 25
      lv_HYBL4 = 2
      forecast_time5 = 23
      g0_lat_6 = 179
      g0_lon_7 = 277
      forecast_time8 = 33
      forecast_time9 = 17
      forecast_time10 = 16
      forecast_time11 = 11
      forecast_time12 = 12

i don't know why this is occurring ?and how to get ride of these
changes if i wanna to write script for operational work
ahmed

-- 
===============
Ahmed Lasheen
Junior researcher at Cairo Numerical Weather Prediction Center (CNWPC)
Egyptian Meteorological Authority(EMA)
Cairo,Egypt
===============

_______________________________________________
ncl-talk mailing list
List instructions, subscriber options, unsubscribe:
http://mailman.ucar.edu/mailman/listinfo/ncl-talk