# \#openifs-tracers

**URL:** https://forum.ecmwf.int/tag/openifs-tracers/132.md

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## [Chemical tracer transport in OpenIFS](https://forum.ecmwf.int/t/chemical-tracer-transport-in-openifs/12168)

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**Author:** [@Jan\_Streffing](https://forum.ecmwf.int/u/Jan_Streffing)\
**Replies:** 16\
**Last updated:** [16 December 2020 16:03 UTC](https://forum.ecmwf.int/t/chemical-tracer-transport-in-openifs/12168 "2020-12-16T16:03:06Z")

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I was approached by a colleague of mine who was asking about the feasibility of calculating chemical tracer transport with OpenIFS. I did some research and found three different project in this direction. Firstly there …

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## [Tracers and mass fixers?](https://forum.ecmwf.int/t/tracers-and-mass-fixers/12149)

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**Author:** [@Etienne\_Tourigny](https://forum.ecmwf.int/u/Etienne_Tourigny)\
**Replies:** 1\
**Last updated:** [17 November 2020 09:12 UTC](https://forum.ecmwf.int/t/tracers-and-mass-fixers/12149 "2020-11-17T09:12:53Z")

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Dear all please excuse my ignorance on this topic, but I would like to know which (if any) GHG and aerosol tracers and which mass fixers are supported in openifs43r3? I am unsure if the page How to control mass conserv…