GCENTER

     GCENTER sets the center latitude-longitude on the ETA model domain

		GCENTER = TPH0D;TLM0D

                                                                         
     TPH0D and TLM0D  are the center latitude (W is negative) and  
     longitude (E is positive) of the computational domain. Note that     
     it is not necessary to to recompile the model if you change the     
     areal coverage of the model domain as long as the number of grid    
     points remains the same.                                            
                                                                         
     For a grid centered at 108 W, 39 N (Centered over Colorado)    
                                                                         
        TPH0D =   39.0
        TLM0D =  -108.0  Note the Negative for W                        

     set GCENTER = 39.0;-108.0