# Can i Use EGG4 Dataset in wrfchem

**URL:** <https://forum.ecmwf.int/t/can-i-use-egg4-dataset-in-wrfchem/11257>\
**Category:** CAMS - Datasets and Usage\
**Tags:** egg4\
**Created:** [10 February 2025 10:45 UTC](https://forum.ecmwf.int/t/can-i-use-egg4-dataset-in-wrfchem/11257 "2025-02-10T10:45:03Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Muhamamd\_Burhan\_Khalid](https://forum.ecmwf.int/letter_avatar_proxy/v4/letter/m/c4cdca/32.png) [@Muhamamd\_Burhan\_Khalid](https://forum.ecmwf.int/u/Muhamamd_Burhan_Khalid)\
**Post date:** [10 February 2025 10:45 UTC](https://forum.ecmwf.int/t/can-i-use-egg4-dataset-in-wrfchem/11257/1 "2025-02-10T10:45:03Z")

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Hi  
i am working with wrfchem and want to use greenhouse gases parameters can i use data form this source ([CAMS global greenhouse gas reanalysis (EGG4)](https://ads.atmosphere.copernicus.eu/datasets/cams-global-ghg-reanalysis-egg4?tab=download)) for simulation if yes then how i can change units of chemical parameters from kg to micromol mol-1