# NO2 inversion configuration using TROPOMI
**URL:** https://forum.atmospherictoolbox.org/t/no2-inversion-configuration-using-tropomi/824
**Category:** QDOAS
**Tags:** sentinel-5p
**Created:** [September 24, 2024, 9:15am UTC](https://forum.atmospherictoolbox.org/t/no2-inversion-configuration-using-tropomi/824 "2024-09-24T09:15:45Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@lijie](https://forum.atmospherictoolbox.org/u/lijie)
#### Post date: [September 24, 2024, 9:15am UTC](https://forum.atmospherictoolbox.org/t/no2-inversion-configuration-using-tropomi/824/1 "2024-09-24T09:15:45Z")
The article “Global Nigeria acid emissions and levels of regional oxidants enhanced by wildfires” published by Theys et al. in Nature Geoscience greatly inspired me. I am currently trying to replicate the inversion method they used to invert HONO and NO2; However, my results did not meet their accuracy. Can you share the QDOAS inversion configuration script for NO2 inversion by TROPOMI or any relevant data that can help me? I greatly appreciate your help and look forward to your reply. thank you very much!
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### Author:  [@thomasd](https://forum.atmospherictoolbox.org/u/thomasd)
#### Post date: [September 26, 2024, 11:43am UTC](https://forum.atmospherictoolbox.org/t/no2-inversion-configuration-using-tropomi/824/2 "2024-09-26T11:43:57Z")
Hi, I can’t share the specific configuration from that publication with you. The configuration for Tropomi HCHO retrievals from our use case [Usecase\_8\_QDOAS\_AMF](https://atmospherictoolbox.org/media/usecases/Usecase_8_QDOAS_AMF.html) should provide a good starting point.
Don’t hesitate to ask if you have more specific questions about the use of the software.
Thomas
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### Author:  [@lijie](https://forum.atmospherictoolbox.org/u/lijie)
#### Post date: [September 26, 2024, 11:57am UTC](https://forum.atmospherictoolbox.org/t/no2-inversion-configuration-using-tropomi/824/3 "2024-09-26T11:57:09Z")
Thanks for your reply, I’ll carefully read and study this tutorial.