README IPXWRF

Author: Tanya Otte
Contributor: Rob Gilliam

The purpose of IPXWRF is two fold. 

1) IPXWRF currently allows users to easily pass soil temperature and moisture 
from the output of one WRF simulation to the wrfinput_d* file of another using the namelist below. The user must 
specify the wrf output file (file_wrfout_last), the current wrf input file (file_wrfin_next) and logicals 
do_msoil/do_tsoil to chose whether one or both soil variables are passed.

2) IPXWRF allows the user to use the analysis of average 2-m temperature that is provided in the wrffdda_d* or wrfsfdda_d*
   to specify the deep soil temperature of the PX LSM's 2-layer soil model. Variable file_wrffdda_next is the wrffdda_d*
   file that has variable T2_NDG_OLD. In WRFV3.0 this is in the wrffdda_d01 file and in WRFV3.1 it is in the wrfsfdda_d01
   file. Note that two different version of IPXWRF exists for these WRF versions. If this option is chosen the user should
   set the "do_tsoildeep_from2m" variable to .TRUE. and define the "avg_period_2m" as the number of days to average the 2-m
   temperature analysis. This option is encourage for PX users for the first run segment of the soil spin up period discussed
   in Gilliam and Pleim (2010, J. Appl. Meteor and Clim.). Subsequent run periods should not use this option, but should pass 
   both soil temp and moisture from the end of one run segment to the start of the next.


 &FILENAMES
   file_wrfout_last = '/project/i4w/gilliam/WRF/archive/WRF3_PX_ACM_OBSGRID/wrfout_d01_2006-07-30_12:00:00'
   file_wrfin_next  = 'wrfinput_d01_test'
   file_wrffdda_next= 'wrfsfdda_d01'
   do_msoil         = .FALSE.
   do_tsoil         =  .FALSE.
   do_tsoildeep_from2m = .TRUE.
   avg_period_2m       = 5
 &END
~                                                                                                                                                                                                                         
