AutoWRFChem-Base

This contains the stand-alone code necessary to automatically run WRF-Chem with NEI and MEGAN emissions, and MOZART boundary conditions

Prerequisites

AutoWRFChem is designed to run on Unix/Linux-like systems. It requires the following programs to be installed on your system and available on your PATH:

• Bash (at /bin/bash)
• Python (2 or 3, note that 3 compatibility not fully tested)
• Perl
• Git

Setup

AutoWRFChem is intended to be placed alongside directories for WRF-Chem, WPS, the NEI emissions converter tool, MEGAN, and MOZART boundary condition tool, that is, in a directory structure like this:

AutoWRFChem-Root/
├── AutoWRFChem-Base
├── MEGAN
├── MOZBC
├── NEI
├── WPS
└── WRFV3
    └── run

AutoWRFChem can clone forks of the WPS, MEGAN, NEI, and MOZBC directories if needed, but you must download the WRFV3 directory yourself. To get the WPS etc. repos, run the Runme script in AutoWRFChem-Base. This will clone them as well as provide a link to the main AutoWRFChem executable in the top directory (here, AutoWRFChem-Root).

Usage

For a full list of subcommands, call ./autowrfchem_main --help in the AutoWRFChem-Base directory, or ./autowrfchem --help in the top directory if you ran Runme to generate that link.

AutoWRFChem usage is generally broken down into four main subcommands:

• config runs all of the component configuration scripts. It requires user input, so do not run as part of a batch job.
  • config namelist starts an interactive program to edit the WRF-Chem namelists. Note: AutoWRFChem modifies the namelists written in WRFV3/run for parts of its functionality, so it is safest to use this interactive tool.
• compile compiles all of the components.
• prepinpt generates the input files needed to run WRF-Chem with NEI emissions, MEGAN biogenic emissions, and MOZART chemical boundary conditions.
  • There are options to generate just met files, just chemistry files, or just missing files.
• run will start WRF-Chem, and has options to automatically resume from the last restart file.

FAQ

• What versions of WRF is this compatible with? Only v3.5 and 3.6 have been tested. Other versions may work, but are not guaranteed.
• How can I try a newer version? Download WRF and WPS manually to the correct directory structure. Emissions preparation may not work, so you may need to handle that manually.
• Can I use multiple domains? Not with this version. A 2.0 version is planned that will be more flexible, but I cannot give any sort of timeline for when that will be ready.