Research Note #7 - WRF Chem Installation

Finally getting face to face with this model once more. Here comes summary for its installation. I had quite problems while installing it, but overall, it was an easy procedure.

Library Needed
--------------
1. NetCDF --> for WRF/WPS, NetCDF Fortran, version >=4.4
2. MPICH --> for multiprocessor
3. zlib --> for WPS
4. libpng --> for WPS
5. Jasper --> for WPS 

Download: http://www2.mmm.ucar.edu/wrf/OnLineTutorial/compilation_tutorial.php

Environment Variables
---------------------
1. Before Any/NetCDF Installation
   DIR=/home/ardhi/Build_WRF/LIBRARIES
   CC=gcc
   CXX=g++
   FC=gfortran
   FCFLAGS=-m64
   F77=gfortran
   FFLAGS=-m64
   
2. After NetCDF Installation
   PATH=$DIR/netcdf/bin:$PATH
   NETCDF=$DIR/netcdf
   
3. After MPICH Installation
   PATH=$DIR/mpich/bin:$PATH
   
4. Before zlib Installation
   LDFLAGS=-L$DIR/grib2/lib 
   CPPFLAGS=-I$DIR/grib2/include

Library Compatibility Tests --> http://www2.mmm.ucar.edu/wrf/OnLineTutorial/compilation_tutorial.php
----------------------------------------------------------------------------------------------------
   
Building WRF
------------
1. Without Chem
   setenv WRF_CHEM=0
   setenv J "-j 2"
   setenv LD_LIBRARY_PATH $DIR/mpich/lib64:$DIR/netcdf/lib64 (for 64bit)
   ./configure --> Serial (32)/ dmpar (34), nesting 0 or 1
   configure.wrf --> LIB_EXTERNAL --> -L/home/ardhi/Build_WRF/LIBRARIES/netcdf/lib64 -lnetcdff -lnetcdf (for 64bit)

2. With Chem
   Same WRF version with Chem (e.g. both V.3.8.1)
   setenv WRF_KPP 0
   setenv WRF_CHEM 1
   setenv EM_CORE 1
   setenv NMM_CORE 0
   setenv J "-j 2"
   setenv LD_LIBRARY_PATH $DIR/mpich/lib64:$DIR/netcdf/lib64 (for 64bit)
   ./configure --> Serial (32)/ dmpar (34), nesting 0 or 1 
   configure.wrf --> LIB_EXTERNAL --> -L/home/ardhi/Build_WRF/LIBRARIES/netcdf/lib64 -lnetcdff -lnetcdf (for 64bit)  

Building WPS
-----------
   setenv JASPERLIB $DIR/grib2/lib
   setenv JASPERINC $DIR/grib2/include
   ./configure --> Serial, GRIB2 (1) or dmpar, GRIB2 (3)
   configure.wps --> WRF_LIB -->  -L$(NETCDF)/lib64  -lnetcdff -lnetcdf (for 64bit)  


Some useful LINUX/UNIX commands during installation:

• setenv (csh,tcsh), export (bash) : sets environment variables
• setenv (csh,tcsh), env | more/less : shows environment variables
• . ~/.bashrc (bash) : run configuration script/permanent environment variables 
• echo $0 : shows the type of current shell 
• lscpu : shows cpu, core and thread numbers (total cpu=socket x core x thread)
• uname -r : shows kernel release version
• uname -m, arch : shows whether linux is 32bit or 64bit
• lsb_release -a : shows distribution release name