Difference between revisions of "Running WRF-GC"
From atmoschem
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- Step 1: Define model domains with geogrid | - Step 1: Define model domains with geogrid | ||
| − | :In the "geogrid" namelist record, the projection of the simulation domain is defined. Only two possible map projections and parameters are supported in WRF-GC: | + | :In the "geogrid" namelist record, the projection of the simulation domain is defined. Only two possible map projections and specified parameters are supported in WRF-GC: |
:• Mercator /'mercator' (truelat1) | :• Mercator /'mercator' (truelat1) | ||
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- Step 2: Extracting meteorological data from GRIB files with ungrib | - Step 2: Extracting meteorological data from GRIB files with ungrib | ||
| − | :Downloading meteorological data for the real data case | + | :Downloading meteorological data for the real data case |
| + | |||
:• http://www2.mmm.ucar.edu/wrf/users/download/free_data.html | :• http://www2.mmm.ucar.edu/wrf/users/download/free_data.html | ||
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==Preparing GEOS-Chem shared data directories== | ==Preparing GEOS-Chem shared data directories== | ||
| − | The GEOS-Chem shared data directories contain many large files necessary for the WRF-GC. Please Set up the top-level root directory for GEOS-Chem shared data, which is called ExtData. Please create the '''/dir/to/data/ExtData''' and set your directories in the "input.geos" file: | + | The GEOS-Chem shared data directories contain many large files necessary for the WRF-GC. Please Set up the top-level root directory for GEOS-Chem shared data, which is called '''ExtData'''. Please create the '''/dir/to/data/ExtData''' and set your directories in the "input.geos" file: |
Root data directory : /dir/to/data/ExtData | Root data directory : /dir/to/data/ExtData | ||
| Line 54: | Line 55: | ||
==Emissions for WRF-GC== | ==Emissions for WRF-GC== | ||
| − | Preparing emission files is not requied. WRF-GC uses Harvard-NASA Emissions Component (HEMCO) with on-line regridding. For more information on HEMCO data directories, please refer to the GEOS-Chem wiki: | + | Preparing emission files is not requied. WRF-GC uses Harvard-NASA Emissions Component (HEMCO) with on-line regridding. To configure HEMCO refer to the "HEMCO_Config.rc" file inside the run directory for WRF. For more information on HEMCO data directories, please refer to the GEOS-Chem wiki: |
• http://wiki.seas.harvard.edu/geoschem/index.php/HEMCO_data_directories | • http://wiki.seas.harvard.edu/geoschem/index.php/HEMCO_data_directories | ||
| + | ==Preparing chemical initial/boundary condition data== | ||
| − | + | Chemical initial and boundary condition data are used outputs from global simulation MOZART-4/GEOS-5 similar to WRF-Chem. Please download the data from : | |
| + | |||
| + | • https://www.acom.ucar.edu/wrf-chem/mozart.shtml | ||
| + | |||
| + | The Mozart data are processed by the WRF-Chem processor called '''mozbc'''. Please download the mozbc utility, including instructions and input files from : | ||
| + | |||
| + | • https://www.acom.ucar.edu/wrf-chem/download.shtml | ||
Revision as of 21:05, 24 December 2018
Running WRF-GC is similar to WRF-Chem.
Contents
Running the WPS
Running the WRF Preprocessing System (WPS) is to prepare input to drive WRF. Please refer to the WRF User's Guide for more detail:
• http://www2.mmm.ucar.edu/wrf/users/docs/user_guide_V3.9/users_guide_chap3.html
- Step 1: Define model domains with geogrid
- In the "geogrid" namelist record, the projection of the simulation domain is defined. Only two possible map projections and specified parameters are supported in WRF-GC:
- • Mercator /'mercator' (truelat1)
- • Unrotated regular latitude-longitude /'lat-lon' (pole_lat, pole_lon, stand_lon)
- Step 2: Extracting meteorological data from GRIB files with ungrib
- Downloading meteorological data for the real data case
- Step 3: Horizontally interpolating meteorological data with metgrid
The GEOS-Chem shared data directories contain many large files necessary for the WRF-GC. Please Set up the top-level root directory for GEOS-Chem shared data, which is called ExtData. Please create the /dir/to/data/ExtData and set your directories in the "input.geos" file:
Root data directory : /dir/to/data/ExtData
The ExtData directory structure cotains two subdirectories:
- CHEM_INPUT: Non-emissions data for GEOS-Chem chemistry modules
- • Download the CHEM_INPUT data directories via anonymous FTP from the Harvard data directory archive (ftp.as.harvard.edu). Please refer to : http://wiki.seas.harvard.edu/geos-chem/index.php/Downloading_GEOS-Chem_source_code_and_data
- HEMCO: Emissions inventories for the HEMCO emissions component
- • Download the HEMCO data directories with a pakeage provided by GEOS-Chem Support Team. Please refer to : http://wiki.seas.harvard.edu/geos-chem/index.php/HEMCO_data_directories#Downloading_the_HEMCO_data_directories
- • Set the HEMCO data directory in the "HEMCO_Config.rc" file
Root : /dir/to/data/ExtData/HEMCO
Emissions for WRF-GC
Preparing emission files is not requied. WRF-GC uses Harvard-NASA Emissions Component (HEMCO) with on-line regridding. To configure HEMCO refer to the "HEMCO_Config.rc" file inside the run directory for WRF. For more information on HEMCO data directories, please refer to the GEOS-Chem wiki:
• http://wiki.seas.harvard.edu/geoschem/index.php/HEMCO_data_directories
Preparing chemical initial/boundary condition data
Chemical initial and boundary condition data are used outputs from global simulation MOZART-4/GEOS-5 similar to WRF-Chem. Please download the data from :
• https://www.acom.ucar.edu/wrf-chem/mozart.shtml
The Mozart data are processed by the WRF-Chem processor called mozbc. Please download the mozbc utility, including instructions and input files from :
