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About WRF-GC

WRF-GC (Lin et al., 2020; Feng et al., 2021) is a new, online coupled model based on the the regional meteorology model, WRF, and the chemical transport model, GEOS-Chem. The coupling structure is designed to be easy to use, massively parallel, and ready for the future. In particular, either one of the two parent models to be updated independently. This allows WRF-GC to take full advantage of the updates in WRF and GEOS-Chem, respectively, and stay state-of-the-science.

Architectural overview of the WRF-GC model (v2.0). The WRF-GC two-way Coupler (all parts shown in red) includes interfaces to the two parent models, as well as the state conversion and state management modules. The parent models (shown in grey) are standard codes downloaded from their sources, without any modifications. From Feng et al. (2021).

The development of WRF-GC was led by Haipeng LIN, Xu FENG, and Tzung-May FU. In addition, the GEOS-Chem Support Team provided valuable assistance in updating the GEOS-Chem code to accommodate the coupling.

Version history

Version 2.0

(updated Feb 9, 2021) WRF-GC v2.0 (Feng et al. (2021)) is an online two-way coupling of the Weather Research and Forecasting (WRF) meteorological model (v3.9.1.1) and the GEOS-Chem chemical model (v12.7.2). WRF-GC v2.0 is built on the modular framework of WRF-GC v1.0 and further includes aerosol-radiation interactions (ARI) and aerosol-cloud interactions (ACI) based on bulk aerosol mass and composition, as well as the capability to nest multiple domains for high-resolution simulations.

Version 1.0

The first version of WRF-GC (v1.0) (Lin et al., 2020) was released on January 4, 2019. A more mature and stable version (v 1.0) was released in Fall 2019. This is the current version.

A few notes about the current version (v 1.0):

  • The coupling between WRF and GEOS-Chem is one-way only, i.e., there is no feedback from GEOS-Chem to WRF.
  • The nested domain capability of WRF is not yet supported.


  • Lin, H., Feng, X., Fu, T.-M.*, Tian, H., Ma, Y., Zhang, L., Jacob, D.J., Yantosca, R.M., Sulprizio, M.P., Lundgren, E.W., Zhuang, J., Zhang, Q., Lu, X., Zhang, L., Shen, L., Guo, J., Eastham, S.D., Keller, C.A. (2020), WRF-GC (v1.0): online coupling of WRF (v3.9.1.1) and GEOS-Chem (v12.2.1) for regional atmospheric chemistry modeling – Part 1: Description of the one-way model, Geosci. Model Dev., doi:10.5194/gmd-13-3241-2020, Full text
  • Feng, X., Lin, H., Fu, T.-M.*, Sulprizio, M. P., Zhuang, J., Jacob, D. J., Tian, H., Ma, Y., Zhang, L., Wang, X., Chen, Q. (2021), WRF-GC (v2.0): online two-way coupling of WRF (v3.9.1.1) and GEOS-Chem (v12.7.2) for modeling regional atmospheric chemistry-meteorology interactions, Geosci. Model. Dev. Discuss., doi:10.5194/gmd-2020-441. Full text
  • Feng, X., Lin, H., and Fu, T.-M.* (2020), WRF-GC: online two-way coupling of WRF and GEOS-Chem for regional atmospheric chemistry modeling, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-5165, doi:10.5194/egusphere-egu2020-5165. Link.

Using WRF-GC

Obtaining the code

If you are interested in downloading WRF-GC and and giving it a spin, please send us an email (fuzm AT sustech DOT edu DOT cn) and tell us your name, affiliation, and intended general application. We will add you to a mailing list and keep you updated on new version releases.

Getting started

Model description paper of WRF-GC (v1.0). Accepted for publication in Geoscientific Model Development

Overview of the WRF-GC as of May 2019

Downloading WRF-GC

Installing WRF-GC

Running WRF-GC

Analyzing WRF-GC outputs

Tutorial at the 9th International GEOS-Chem Meeting (IGC9)

Overview of the WRF-GC as of May 2019

Slides for the WRF-GC model clinic This is a step-by-step tutorial on how to run WRF-GC

Starter kit for use in the WRF-GC model clinic This is a package of an example simulation using WRF-GC to be used with the tutorial above.

Help with WRF-GC

Contact us

If you encounter any problems running WRF-GC or have suggestions for model improvements, please email us (fuzm AT sustech DOT edu DOT cn).

WRF-GC google group

The WRF-GC google group ( is a place for WRF-GC users to ask questions and exchange experiences about using the WRF-GC model.

To join the google group, please sign in your google account and search for WRF-GC on [ Google Groups] and click 'Ask to join'. Your group membership should be processed by the group managers shortly.