WRF-Chem is the Weather Research and Forecasting (WRF) model coupled with Chemistry. The model simulates the emission, transport, mixing, and chemical transformation of trace gases and aerosols simultaneously with the meteorology. The model is used for investigation of regional-scale air quality, field program analysis, and cloud-scale interactions between clouds and chemistry.
The development of WRF-Chem is a collaborative effort among the community. NOAA/ESRL scientists are the leaders and caretakers of the code. The Official WRF-Chem web page is located at the NOAA web site. Our model development is closely linked with both NOAA/ESRL and DOE/PNNL efforts. Description of PNNL WRF-Chem model development is located at the PNNL web site as well as the PNNL Aerosol Modeling Testbed.
Go to TOOLS page for more information:
Please see the Best Practices 2015 Tutorial Presentation that includes example namelists for running with MOZCART and MOZART-MOSAIC.
Submit questions regarding the tools and developments from our group to the WRF-Chem Discussion Forum.
For all other requests we refer to the WRF Forum.
WRF-Chem/DART is being used for: (i) development of efficient satellite retrieval data assimilation methods (compact phase space retrievals); (ii) independent and joint assimilation of atmospheric composition and meteorological observations, and (iii) estimating/constraining emission with the state augmentation methods. WRF-Chem/DART is being applied to two field campaigns, FRAPPE and KORUS-AQ, for atmospheric composition forecasting and data assimilation research. WRF-Chem/DART is also being applied to the MarcoPolo - Panda project for regional air quality forecasting in China.
New users may register and download WRF-Chem at the WRF Model Download page. Raw model output is available upon request for research purposes.
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