Undefined references when compiling MCIP

@CMAQ_user

From your log file, you are using an urban canopy parameterization in WRF. MCIPv4.3 (and previous versions) had been coded to find the fraction of urban area as “FRC_URB”, but it really should be “FRC_URB2D”. This was corrected in MCIPv4.4.

To make the correction in MCIPv4.3, modify subroutine rdwrfem.f90 to change “FRC_URB” to “FRC_URB2D” in lines 1544, 1549, and 1551. In line 1549, be sure to leave the length of the character string fixed, so there will not be any blanks at the end of the string when you make the change.

Tanya