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(Created page with "==Downloading Meteorological data to drive WRF== ==Preparing chemical boundary condition data using global GEOS-Chem outputs==")
 
(Downloading Meteorological data to drive WRF)
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==Downloading Meteorological data to drive WRF==
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Running WRF-GC is similar to WRF-Chem.
  
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==Running the WPS==
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Running the WRF Preprocessing System (WPS) is to prepare input to drive WRF. Please refer to the WRF User's Guide for more detail:
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• http://www2.mmm.ucar.edu/wrf/users/docs/user_guide_V3.9/users_guide_chap3.html
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- Step 1: Define model domains with geogrid
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: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:
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:• Mercator /'mercator'  (truelat1)
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:• Unrotated regular latitude-longitude /'lat-lon'  (pole_lat, pole_lon, stand_lon)
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- Step 2: Extracting meteorological data from GRIB files with ungrib
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:Downloading meteorological data for the real data case
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:• http://www2.mmm.ucar.edu/wrf/users/download/free_data.html).
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- Step 3: Horizontally interpolating meteorological data with metgrid
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==Preparing GEOS-Chem shared data directories==
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The GEOS-Chem shared data directories contain many large files necessary for the WRF-GC. Please Set up the
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- CHEM_INPUTS: Define model domains with geogrid
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==Emissions for WRF-GC==
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Preparing emission files is not requied. WRF-GC uses Harvard-NASA Emissions Component (HEMCO) with on-line regridding. For information on obtaining HEMCO data directories, please refer to the GEOS-Chem wiki:
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:• http://wiki.seas.harvard.edu/geoschem/index.php/HEMCO_data_directories
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:Note: The location of HEMCO data directory needs to be specified in "input.geos" and "HEMCO_Config.rc"
  
 
==Preparing chemical boundary condition data using global GEOS-Chem outputs==
 
==Preparing chemical boundary condition data using global GEOS-Chem outputs==

Revision as of 19:30, 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 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
http://www2.mmm.ucar.edu/wrf/users/download/free_data.html).


- Step 3: Horizontally interpolating meteorological data with metgrid


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

- CHEM_INPUTS: Define model domains with geogrid


Emissions for WRF-GC

Preparing emission files is not requied. WRF-GC uses Harvard-NASA Emissions Component (HEMCO) with on-line regridding. For information on obtaining HEMCO data directories, please refer to the GEOS-Chem wiki:

http://wiki.seas.harvard.edu/geoschem/index.php/HEMCO_data_directories
Note: The location of HEMCO data directory needs to be specified in "input.geos" and "HEMCO_Config.rc"

Preparing chemical boundary condition data using global GEOS-Chem outputs