Thanks @dazhong.yin. I used WRFv3.9.1.1 but NOAH LSM, so WRF SLTYP would not be an issue. Actually, I just started another thread NaN values of NH3_Emis variable in CCTM_DRYDEP_* file stating NaN values of NH3 and NH3_Emis variables in the CCTM_DRYDEP_* file. However, I do not know how if this error is related to those NaN values of NH3 and where those NaN values came from?